Re: [Matplotlib-users] passing multiple path arguments to make_compound_path
Hi, put all them into a list ps = [p1, p2, ..., pn] and then unpack them path.Path.make_compound_path(*ps) Cheers, Fra ps: this is standard python unpacking 2014-11-27 18:12 GMT+01:00 Evan Mason evanma...@gmail.com: Hi, I have several path objects that I want to join together with make_compound_path. For example, with p1 and p2: In [136]: p1 Out[136]: Path(array([[-29.85721973, -30.], [-29.84752676, -29.77715877], [-29.88734508, -29.55431755], [-29.97470553, -29.33147632], [-30., -29.28831083]]), None) In [138]: p2 Out[138]: Path(array([[-30., 45.166 ], [-29.94756898, 45.09749304], [-29.87227011, 45.32033426], [-29.84525888, 45.54317549], [-29.86787108, 45.76601671], [-29.93898847, 45.98885794], [-30., 46.10595725]]), None) I can do path.Path.make_compound_path(p1, p2) which joins them successfully. If I have a another path, p3, I can do: path.Path.make_compound_path(p1, p2,p3), and so on. However, in my script I never know how many paths I will have, so I'd like to put them into some sort of container, and pass that to make_compound_path. I've tried lists: In [140]: p1p2 = [p1, p2] In [141]: path.Path.make_compound_path(p1p2) --- AttributeErrorTraceback (most recent call last) ipython-input-141-eb62de9fcada in module() 1 path.Path.make_compound_path(p1p2) /usr/lib64/python2.7/site-packages/matplotlib-1.4.2-py2.7-linux-x86_64.egg /matplotlib/path.py in make_compound_path(cls, *args) 330 total_length = sum(lengths) 331 -- 332 vertices = np.vstack([x.vertices for x in args]) 333 vertices.reshape((total_length, 2)) 334 AttributeError: 'list' object has no attribute 'vertices' without success. Can anybody suggest a way to do this? Thanks, Evan -- Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751iu=/4140/ostg.clktrk ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751iu=/4140/ostg.clktrk___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Defaults?
Hi Sebastian, If you want to set the defaults only once and use them forever, there is the matplotlibrc file (http://matplotlib.org/users/customizing.html) If you want to easily change the defaults according to the context of the plot mpltools by Tony S. Yu can help you ( https://github.com/tonysyu/mpltools) Cheers, Fra 2014-11-07 16:15 GMT+01:00 Sebastian Berg sebast...@sipsolutions.net: Hey, just something I was wondering about today. I commonly want to change certain things about my plots. For example I like a serif/larger fonts, and everyone knows that jet is an awful default colour map almost always... It could be neat to have some more default rc's or so that can be loaded easily. I mean I could just create one for myself, but having some examples of what can be done and being able to switch that could be neat. Such as some defaults that are better for printing, maybe in matplotlib or really just on a website which shows some example plot for uploaded RCs. Anyway, just rambling :), I am not planning to really think about it much. And maybe some things even exist and I am not aware of it. Regards, Sebastian -- ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] a possible bug report
Hi Michael, I don't have an answer about your bug. But the official place to report possible bugs is github. https://github.com/matplotlib/matplotlib/issues?state=open Cheers, Fra 2014-06-12 18:07 GMT+02:00 M.Rule mrule7...@gmail.com: Hi all, I haven't been able to find a more official place to report potential Matplotlib bugs, so I'm going to describe the issue I'm seeing here. Sorry if this is the wrong forum. On my system, it takes matplotlib a very very long time to close plots. Sometimes, up to 20 minutes to close a simple figure. Creating new figures remains fast. The problem seems to occur only when I've loaded a large amount of data in to python ( on the order of 1GB ). I am using the current version of Ubuntu and running ipython --pylab. To reproduce on my system, it is sufficient to load a large amount of data, create a plot.. any plot, and then try to close it using the little x at the top right corner of the window. The whole session will freeze for an extended period of time. The plot does not have to be complex: a hundred datapoints, a thousand, it makes no difference. Since the problem only occurs when a large amount of data has been loaded, my guess is that there is a problem with how Matplotlib/Pylab/Python is trying to free the memory associated with the figure? So... I just though I'd put this out there in case anyone else sees the same issue, or in case a developer who knows why this might be happening reads this. The workaround for me is... to simply wait for the figures to close, however long that may take, or restart the whole session. Best, michael. -- HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions Find What Matters Most in Your Big Data with HPCC Systems Open Source. Fast. Scalable. Simple. Ideal for Dirty Data. Leverages Graph Analysis for Fast Processing Easy Data Exploration http://p.sf.net/sfu/hpccsystems ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions Find What Matters Most in Your Big Data with HPCC Systems Open Source. Fast. Scalable. Simple. Ideal for Dirty Data. Leverages Graph Analysis for Fast Processing Easy Data Exploration http://p.sf.net/sfu/hpccsystems___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] video without black bands
Dear Diego,
2014-03-13 14:49 GMT+01:00 diedro diego.aves...@gmail.com:
Dear B.,
thanks a lot for your replay. I get it.
What do you think is the measure for w and h. Is the unit of measure
in pixels?.
yes
What does fps stand for?
frames per second
Cheers,
Francesco
Thanks a lot
Diego
On 12 March 2014 16:05, Benjamin Root-2 [via matplotlib] [hidden
email]http://user/SendEmail.jtp?type=nodenode=43059i=0
wrote:
In your options to mencoder, you are specifying the width/height as:
'type=png:w=9800:h=600:fps=0.6',
But your PNGs have size of 704x538 pixels. That's why you have black bars
on either side of your animation.
Cheers!
Ben Root
On Wed, Mar 12, 2014 at 7:16 AM, diedro [hidden
email]http://user/SendEmail.jtp?type=nodenode=43050i=0
wrote:
sorry for that,
I supposed that I was not more in the the first mailing list. When I
post the second one, I realized that I was still in the mailing list
Regarding the post:
Image Type: png (The PNG image format)
Width: 704 pixels
Height: 538 pixels
Thanks a lot
Diego
On 12 March 2014 12:10, Oliver [via matplotlib] [hidden
email]http://user/SendEmail.jtp?type=nodenode=43047i=0
wrote:
Please don't double post. Also, this post is much more informative than
the first, it's much clearer now where the problem is, and it is not
related to matplotlib at all, but with the options you're passing to
*mencoder*.
What's the size of your orginal pngs?
2014-03-12 11:58 GMT+01:00 diedro [hidden
email]http://user/SendEmail.jtp?type=nodenode=43046i=0
:
Dear all,
I have created a video from *.png files. The problem is that my video
has
black bands on the left and on the right. I have used the following
commands:
command = ('mencoder',
'mf://*.png',
'-mf',
'type=png:w=9800:h=600:fps=0.6',
'-ovc',
'lavc',
'-lavcopts',
'vcodec=mpeg4',
'-oac',
'copy',
'-o',
'output.avi')
How could I create a video without the black bands.
Thank you all,
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Re: [Matplotlib-users] savefig - legend only
Hi Peter,
just get the legend handlers and labels with
handles,labels = ax.get_legend_handles_labels()
then create an empty plot with axes `axe` and do
axe.legend(handles, labels, loc=loc)
If you want to hide the axis:
axe.xaxis.set_visible(False)
axe.yaxis.set_visible(False)
and/or
for v in axe.spines.values():
v.set_visible(False)
Enjoy,
Fra
2014-01-31 Peter Van Wieren p...@sbcglobal.net
I would like to ask if there is a way to print only the legend box of a
figure.
The motiviation for wanting to do this is a work around to the problem of
having the legend box obscuring data without resorting to outside
placement of the legend. The idea here is that matplotlib would provide
two images:
1. PNG file of figure without legend.
2. PNG file of legend only.
The end user would import both images into another tool (e.g. microsoft
power point) and arrange figure and legend interactively for the final
product.
Example follows:
import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0, 1)
fig, (ax) = plt.subplots(nrows=1)
ax.plot( x , np.sin(2*np.pi*x) , label='Curve1')
ax.plot( x , np.sin(2*np.pi*x+0.2) , label='Curve2')
ax.set_title('Set default color cycle to rgby')
plt.savefig('without_legend.png',dpi=75)
if True: # Difficult to automatically make a location choice robust
ax.legend(loc='upper left') # in this particular case, a poor choice for
placement
else:
ax.legend(loc='upper right') # in this particular case, a good choice
for placement
plt.savefig('with_legend.png',dpi=75)
# worst case solution could be post processing these files with imagemagick
# begin with composite without_legend.png with_legend.png -compose
difference alpha_channel.png
#... then filter with alpha_channel.png against with_legend.png
#... finally crop this to get legend_only.png
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Re: [Matplotlib-users] how do I set the order of layers?
use the zorder keyword. higher zorder stay above lower values. cheers Francesco Il giorno 24/ago/2013 11:27, vwf v...@vulkor.net ha scritto: Hello, In the attached example I would like to have the wedges under the arrows. Can someone tell me how do this? I tried to follow the tutorial from http://matplotlib.org/users/artists.html but I didn't really get it all. Thank you from pylab import * from numpy import ma import math import matplotlib.pyplot as plt from matplotlib.patches import Wedge X,Y = meshgrid( arange(0,2*pi,1),arange(0,2*pi,1) ) U = cos(X) V = sin(Y) def draw_w(x, y, p1, v, ax=None, **kwargs): if ax is None: ax = plt.gca() p1*=180/math.pi t1= (p1-v) t2= (p1+v) c=(x,y) radius=0.5 w1 = Wedge(c, radius, t1, t2, fc='0.0', ec='None', alpha=1.0, **kwargs) ax.add_artist(w1) fig, ax = plt.subplots() Q = plt.quiver( U, V, color='LightSalmon', edgecolors='LightSalmon') (a,b)=shape(X) for i in range(a): for j in range(b): draw_w(X[i,j],Y[i,j],X[i,j], 25, ax=ax) plt.show() -- Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511iu=/4140/ostg.clktrk ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511iu=/4140/ostg.clktrk___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Individual custom markers and colorbar
Il giorno 26/apr/2013 13:16, Hackstein news.hackst...@gmx.net ha
scritto:
Thanks, Ryan, this is (amost) exactly what I was looking for. Now, I get
the markers and their colors right, but I still have two problems:
The markers have a black edges, that I cannot get rid of. I've tried
rect = Rectangle(..., ec=None)
and also
col.set=edgecolor(None)
I think that you have to use the string 'none' instead of None type. The
latter is used to use the default value for the variable (in you case
black).
cheers
Francesco
and 'None', respectively, both with no effect whatsoever.
The second problem is, that I cannot get the colorbar to work.
I tried
sc = ax.add_collection(col)
plt.colorbar(sc)
and
plt.colobar(col)
both do not work.
Any Ideas how to fix those two issues?
Thanks,
-Hackstein
Message: 4
Date: Thu, 25 Apr 2013 19:44:23 -0400
From: Ryan Nelson rnelsonc...@gmail.com
Subject: Re: [Matplotlib-users] Individual custom markers and colorbar
To: matplotlib-users@lists.sourceforge.net
Message-ID: 5179bfd7.7060...@gmail.com
Content-Type: text/plain; charset=iso-8859-1
Hackstein,
Unfortunately, I'm not sure of an 'elegant' way to do what your asking
with a single call to scatter. Others may know a better way. However,
you can use rectangle patches and patch collections. (Requires a bit
more code than scatter but is ultimately more flexible.)
I think the example below does what you need, but with random numbers.
Hope it helps a little.
Ryan
###
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.patches import Rectangle
from matplotlib.collections import PatchCollection
n = 100
# Get your xy data points, which are the centers of the rectangles.
xy = np.random.rand(n,2)
# Set a fixed height
height = 0.02
# The variable widths of the rectangles
widths = np.random.rand(n)*0.1
# Get a color map and color values (normalized between 0 and 1)
cmap = plt.cm.jet
colors = np.random.rand(n)
rects = []
for p, w, c in zip(xy, widths, colors):
xpos = p[0] - w/2 # The x position will be half the width from the
center
ypos = p[1] - height/2 # same for the y position, but with height
rect = Rectangle( (xpos, ypos), w, height ) # Create a rectangle
rects.append(rect) # Add the rectangle patch to our list
# Create a collection from the rectangles
col = PatchCollection(rects)
# set the alpha for all rectangles
col.set_alpha(0.3)
# Set the colors using the colormap
col.set_facecolor( cmap(colors) )
# Make a figure and add the collection to the axis.
ax = plt.subplot(111)
ax.add_collection(col)
plt.show()
###
On 4/24/2013 5:35 PM, Hackstein wrote:
Hi all,
I am trying to get a scatter plot using a colormap. Additionally, I
need to define every marker for every data point individually -- each
being a rectangle with fixed height but varying width as a function of
the y-value. X and y being the data coordinates, z being a number to
be color coded with the colormap.
Ideally, I would like to create a list of width and height values for
each data point and tell the scatter plot to use those.
So far I got colormapped data with custom markers (simplified):
[code]
import numpy as np
import matplotlib.pyplot as plt
from pylab import *
x = y = [1,2,3,4,5]
z = [2,4,6,8,10]
colors = cm.gnuplot2
verts_vec = list(zip([-10.,10.,10.,-10.],[-5.,-5.,5.,5.]))
fig = plt.figure(1, figsize=(14.40, 9.00))
ax = fig.add_subplot(1,1,1)
sc = ax.scatter(x, y, c=np.asarray(z), marker=None, edgecolor='None',
verts=verts_vec, cmap=colors, alpha=1.)
plt.colorbar(sc, orientation='horizontal')
plt.savefig('test.png', dpi=200)
plt.close(1)
[/code]
But I need to define a marker size for each point, and I also need to
do that in axis scale values, not in points.
I imagine giving verts a list of N*2 tuples instead of 2 tuples, N
being len(x), to define N individual markers.
But when doing that I get the error that vertices.ndim==2.
A less elegant way would be to plot every data point in an individual
scatter plot function, using a for-loop iterating over all data
points. Then, however, I see no way to apply a colormap and colorbar.
What is the best way to accomplish that then?
Thanks,
-Hackstein
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Re: [Matplotlib-users] Trying to migrate to Python 3.2, Matplotlib 1.2.1
Hi John, on Kubuntu Precise the standard repo has at least: python3-pyqt4 python3-pyside python3-tk The first two should enable Qt4Agg backend, the last TkAgg Fra 2013/4/19 Sterling Smith smit...@fusion.gat.com I have used the TkAgg backend in python2, installing the dependencies by hand. Is this backend not available for python3? -Sterling On Apr 18, 2013, at 8:03PM, John Ladasky wrote: Thanks to both Francesco Montesano and Benjamin Root. I have done some reading. And I have made some progress, though I am not quite where I want to be yet. So the problem appears to be that the only backend for which I had suitable Python 3 libraries was agg. It only requires libpng, which I have. I can render a Matplotlib canvas, but it appears that the only output that agg offers is in the form of PNG files to disk. I cannot create a live window on the screen. Reading more, I realize that the way I was getting GUI output previously (with Python 2.7 and Matplotlib 1.1) was through wxPython. Unfortunately, it appears that wxPython's star is fading, and a Python 3-compatible version will not be written. In fact, wxPython hasn't released a new version in nine months. The other choices for Matplotlib GUI output on Linux appear to be through GTK, PySide, and PyQt. I am not familiar with GTK, but I know that it is widely-used. Also, GTK appears to be Python 3-compatible, and so that is where I need to go. I'm going through a trial and error process. Unfortunately, the names of the repositories in Ubuntu are not very helpful. I installed a few GTK and python-gtk related packages that I thought were relevant. On my first build attempt I got no errors, but also, I didn't get a GTKAgg backend. Upon re-reading, I saw that I should modify matplotlib's setup.cfg file to force a GTK build attempt, and to report errors if it fails. That's what it does. In the optional backend dependencies section I am not seeing any GTK libraries listed, even though I have installed python-gtk2-dev (2.24.0), python-gobject-2-dev (2.28.6), libgtk2.0-dev (2.24.10), libglib2.0-dev (2.32.3), python-gi-dev (3.2.2), python-gobject-dev (3.2.2), python3-gi (3.2.2), and a few DOZEN packages on which these depend. If anyone knows the way forward from here, I would appreciate your advice. Thanks again. -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] zig-zag to represent suppressed 0 on axis?
Il giorno 08/apr/2013 21:05, Kevin Hunter Kesling kmhun...@ncsu.edu ha scritto: At 4:20pm -0400 Sun, 07 Apr 2013, Francesco Montesano wrote: Il giorno 07/apr/2013 21:03, Kevin Hunter Kesling ha scritto: On the other hand, I'm still such a noob at Matplotlib ... is there a way to have one of the subplots take up more than its default 50% allotment? you can give a look at the last two plots in this example http://matplotlib.org/examples/pylab_examples/demo_tight_layout.html or use plot.axes providing the rectangle that you want That is closer to what I want, but still not there. I was finally able to find something that fit the bill to 95% of what I want: http://matplotlib.1069221.n5.nabble.com/Proposal-for-Broken-Axes-td38050.html The first post by 'klukas' does exactly what I asked for. It's a zig-zag on the Y-axis to show that what is graphed is not continuous, and unlike the various official examples, the zig-zag placement is user-specifiable, as opposed to exactly halfway between the top and bottom. The only thing I have yet to figure out how to do is to simultaneously have a zig-zag on the X axis as well -- an artifact of how these zig-zags must be created via multiple axes on the same figure, rather than as built in to the axis artist. For googleability: The above linked graph code enables for matplotlib: - suppressed zeros on the Y-axis of an XY plot - showing suppressed data on the Y-axis - lightning bolt symbol on the Y-axis - zig-zag on the Y-axis - a broken Y-axis Thanks for your pointers, Francesco, as they helped me to fine-tune my Google search terms. And thank you, Klukas, whoever you are. I'm half that you found the solution for your problem and to have been useful just providing links. This has been one of the easiest answer I have ever given :) And mostly thanks for sharing your findings. cheers and good night, Fra Cheers, Kevin -- Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] zig-zag to represent suppressed 0 on axis?
2013/4/7 Kevin Hunter Kesling kmhun...@ncsu.edu Hullo Matplotlib List, I'm looking for a way to represent on an X-Y graph the fact that an axis does not start from the origin. When drawing by hand, I'll use a little zig-zag, lightning bolt, or slight space on the axis in question to represent this fact, just off from where the X and Y axis lines meet. How would I go about telling Matplotlib to do this? After two hours of perusing the Axes documentation, and tooling around in an IPython shell, I appear to be striking out. If you are using a monospaced font to view this email, this may illustrate the functionality for which I'm looking: 150 || * * 145 || * * 140 || ** 135 || * 130 || / / zig zag I want || 0 0 1 2 3 4 5 6 7 8 Many thanks for any help, Kevin -- Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users Hi Kevin, Have you given a look at this example: http://matplotlib.org/examples/pylab_examples/broken_axis.html Francesco -- Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] real time plotting
Dear Neal, 2013/3/11 Neal Becker ndbeck...@gmail.com I want to update a plot in real time. I did some goog search, and saw various answers. Trouble is, they aren't working. Here's a typical example: import matplotlib.pyplot as plt import numpy as np fig=plt.figure() plt.axis([0,1000,0,1]) i=0 x=list() y=list() while i 1000: temp_y=np.random.random() x.append(i) y.append(temp_y) plt.scatter(i,temp_y) i+=1 plt.draw() If I run this, it draws nothing. This is my matplotlibrc: backend : Qt4Agg mathtext.fontset: stix do you use interactive mode? (plt.ion() before creating the figure) Francesco -- Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester Wave(TM): Endpoint Security, Q1 2013 and remains a good choice in the endpoint security space. For insight on selecting the right partner to tackle endpoint security challenges, access the full report. http://p.sf.net/sfu/symantec-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester Wave(TM): Endpoint Security, Q1 2013 and remains a good choice in the endpoint security space. For insight on selecting the right partner to tackle endpoint security challenges, access the full report. http://p.sf.net/sfu/symantec-dev2dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Newbie help with subplots
2013/2/1 Benjamin Root ben.r...@ou.edu On Fri, Feb 1, 2013 at 11:04 AM, Jeff Layton layto...@att.net wrote: Good morning, I'm been using matplotlib for a while but it's always been very simple plots (hey - I'm a simple person). I have a need for some fancier plots using subplots. I want to have 3 charts one above the other with a single set of x-axis labels on the bottom subplot that works for all three charts. I'd also like to put a legend outside the set of three charts - either to the top right or horizontally along the bottom. I've been reading a number of links and nothing really works. Most everything is around pylab and I'm using just straight matploblib. I hate to say it, but I need to have the solution and I'm looking for some newbie help. One of the frustrating aspects is I need to make sure it works for version 0.91 :( I'm attaching a simple example script that shows the plots as I currently have achieved them. Apologies for any bad coding. Just in case the attachment doesn't make it through the code is below. Thanks! Jeff I don't know when it was introduced, but ax.label_outer() (called on each axes object) can help you with the axis labeling. If that works, we can then tackle legend placement. if it does not work should be possible to do for ax1 and ax2 [t.set_visible(False) for t in ax.get_xticklabels()] Francesco Ben Root -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_jan ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_jan___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] subplots: common x and y labels
Dear matplolibers, when dealing with multi-axes plot sometimes would be nice to use figure-wide x and y labels. On the web I've found some suggestion on how to do this, but I found no solution valid in the general case and that integrate in the matplotlib ecosystem. The ideal would be to have a set_xlabel and set_ylabel method in the Figure class, with the same api of the corresponding Axes methods. As a proof of concept I've written a class derived from Figure , which implements the two methods simply adding a horizontal (vertical) text below (left of) the lowest (leftmost) axes. The class together with a short example is attached. I'm aware that the current implementation is really poor (no integration with tight_layout, the padding must be adjusted by hand, a problem in particular for the y label). The best is to use self.xaxis.set_label_text(xlabel, fontdict, **kwargs) as in the Axis set_xlabel (as I gather this create a label that is rendered in the correct position accounting for ticklabels, ticks, tight_layout, etc). To do this one would have to create: - a figure-wide invisible axes that encloses all the other axes/subplots, and whose dimension has to be updated every time a new axis/subplot is added (this should be easily done) with only the label visible. This could also allow to use axis features, like twin axis. - just the required axis (invisible) that hosts the labels. I think that this approach is less demanding computationally, but I don't know how much sense have two axis not attached to axes. Any suggestions/hints on how to implement these methods in a better way is very welcome. If there is no opposition, later in the day I'll submit PR on github with the two new method and see if we can get something out of this idea. Cheers, Francesco test_set_label_fig.py Description: Binary data -- Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] default backend on 1.2.0rc1 and master
Dear list, I've see a difference between the default backend between v1.1.1 (shipped with kubuntu 12.10dev) and v1.2.0.rc1, 1.2.0rc2 and master (1.3.x). My set up is to call ipython with pylab and turn on interactive mode. I still haven't copied over my matplotlibrc file from my work computer (there I use qtagg, if I remember well) On v1.1.1 the default is [backend: TkAgg], while in the other two cases it is [backend: agg]. Is there some reason for this difference? cheers, Francesco -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] default backend on 1.2.0rc1 and master
2012/10/17 Eric Firing efir...@hawaii.edu On 2012/10/16 9:22 PM, Francesco Montesano wrote: Dear list, I've see a difference between the default backend between v1.1.1 (shipped with kubuntu 12.10dev) and v1.2.0.rc1, 1.2.0rc2 and master (1.3.x). My set up is to call ipython with pylab and turn on interactive mode. I still haven't copied over my matplotlibrc file from my work computer (there I use qtagg, if I remember well) On v1.1.1 the default is [backend: TkAgg], while in the other two cases it is [backend: agg]. Is there some reason for this difference? The default should be based on what is found when mpl is built, so it sounds like when you are building v1.2.x, none of the supported gui toolkits is being found. I don't know why that is. Are you installing on a system that has gui toolkits already installed? I think so, as the v1.1.1 shipped with my OS is using TkAgg as backend and I can plot interactively. When I build from source I get OPTIONAL BACKEND DEPENDENCIES libpng: found, but unknown version (no pkg-config) Tkinter: no * Using default library and include directories for * Tcl and Tk because a Tk window failed to open. * You may need to define DISPLAY for Tk to work so * that setup can determine where your libraries are * located. Tkinter present, but header files are not * found. You may need to install development * packages. * You may need to install 'dev' package(s) to * provide header files. Gtk+: no * Could not find Gtk+ headers in any of * '/usr/local/include', '/usr/include', * '/usr/local/include', '/usr/include', '.' Mac OS X native: no Qt: no Qt4: Qt: 4.8.2, PyQt4: 4.9.3 PySide: no Cairo: 1.8.8 Could be a problem with Tkinter and dev packages. One useful technique with ubuntu derivatives is to do sudo apt-get build-dep python-matplotlib probably it's easier if I just switch to qtagg, as I already have it It might pull in more than you really want, but it will certainly include gui toolkits. Eric Thanks, Francesco cheers, Francesco -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] default backend on 1.2.0rc1 and master
2012/10/17 Damon McDougall damon.mcdoug...@gmail.com On Wed, Oct 17, 2012 at 9:12 AM, Francesco Montesano franz.berges...@gmail.com wrote: 2012/10/17 Eric Firing efir...@hawaii.edu On 2012/10/16 9:22 PM, Francesco Montesano wrote: Dear list, I've see a difference between the default backend between v1.1.1 (shipped with kubuntu 12.10dev) and v1.2.0.rc1, 1.2.0rc2 and master (1.3.x). My set up is to call ipython with pylab and turn on interactive mode. I still haven't copied over my matplotlibrc file from my work computer (there I use qtagg, if I remember well) On v1.1.1 the default is [backend: TkAgg], while in the other two cases it is [backend: agg]. Is there some reason for this difference? The default should be based on what is found when mpl is built, so it sounds like when you are building v1.2.x, none of the supported gui toolkits is being found. I don't know why that is. Are you installing on a system that has gui toolkits already installed? I think so, as the v1.1.1 shipped with my OS is using TkAgg as backend and I can plot interactively. When I build from source I get OPTIONAL BACKEND DEPENDENCIES libpng: found, but unknown version (no pkg-config) Tkinter: no * Using default library and include directories for * Tcl and Tk because a Tk window failed to open. * You may need to define DISPLAY for Tk to work so * that setup can determine where your libraries are * located. Tkinter present, but header files are not * found. You may need to install development * packages. * You may need to install 'dev' package(s) to * provide header files. Gtk+: no * Could not find Gtk+ headers in any of * '/usr/local/include', '/usr/include', * '/usr/local/include', '/usr/include', '.' Mac OS X native: no Qt: no Qt4: Qt: 4.8.2, PyQt4: 4.9.3 PySide: no Cairo: 1.8.8 Could be a problem with Tkinter and dev packages. One useful technique with ubuntu derivatives is to do sudo apt-get build-dep python-matplotlib probably it's easier if I just switch to qtagg, as I already have it It might pull in more than you really want, but it will certainly include gui toolkits. Eric Thanks, Francesco cheers, Francesco Packages have whatever default backend the maintainer decided to build them with. For example, the macports packaged version of matplotlib is maintained by someone who specifies the macosx backend to be the default. When building from source, I think the TkAgg backend is the default, because most platforms have tkinter installed out of the box. Since it appears you don't have Tkinter installed, Agg is the default. Agg is a non-gui backend (but it produces awesome output). Thanks for the explanation. Fra -- Damon McDougall http://www.damon-is-a-geek.com B2.39 Mathematics Institute University of Warwick Coventry West Midlands CV4 7AL United Kingdom -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Matplotlib produced plots in academic journal articles
2012/10/5 Gökhan Sever gokhanse...@gmail.com On Fri, Oct 5, 2012 at 1:23 PM, Damon McDougall damon.mcdoug...@gmail.com wrote: On Fri, Oct 5, 2012 at 8:11 PM, Gökhan Sever gokhanse...@gmail.com wrote: Seeing mpl produced plots would be only 1 or 2 clicks away, plus this would This is not true. A lot of articles are unavailable to certain institutions due to a lack of subscription. A major sticking point. I was only thinking open-access journals, which open-source users (i.e. users of python tools) tend to publish their articles in open-journals. Of course, there are subscription required articles but those are secondary concerns. Sometimes authors make their articles publicly available even the article is on a paid journal. provide context to the use of plots rather that extracting figures and putting them separately (dealing with copyright issues and such) on an alternative gallery page. The figures you linked look shinny but not much practical use in my field. Point taken on the context argument. I'll take that. To resolve it, make the figure/html image link to the underlying publication? Citation listing is easier for me, we can go both ways, a page listing only citations, another one a more experimental figure/citation if copyright issues can be resolved easily. In anyways, we will have to gather citations. Let's start doing that? I think that an official acknowledgment that people can copy and paste (and adapt) in their paper would be a great idea. Francesco -- Gökhan -- Don't let slow site performance ruin your business. Deploy New Relic APM Deploy New Relic app performance management and know exactly what is happening inside your Ruby, Python, PHP, Java, and .NET app Try New Relic at no cost today and get our sweet Data Nerd shirt too! http://p.sf.net/sfu/newrelic-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Don't let slow site performance ruin your business. Deploy New Relic APM Deploy New Relic app performance management and know exactly what is happening inside your Ruby, Python, PHP, Java, and .NET app Try New Relic at no cost today and get our sweet Data Nerd shirt too! http://p.sf.net/sfu/newrelic-dev2dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] sharex with different tick labels
Hi Daniel,
2012/9/13 Daniel Welling dantwell...@gmail.com
Greetings, all.
I have an issue: I have several axes stacked in a column with a common time
vector on each x-axis. Each plot is a contour, so overplotting is not an
option. In a perfect world, I want the following:
1) The subplots are tightly spaced such that with ax.grid() activated, the
grid lines appear continuous. This makes comparing simultaneous
characteristics between subplots very easy.
2) The subplots are linked via the sharex keyword so I can move them all in
unison.
3) Only the bottommost subplot has x tick labels; on other plots, the long
time-formatted labels stick out of the left and right of the plots.
Items 2 and 3 are contradictory: if I turn off tick labels (e.g.
ax.set_xticklabels('')) on one axes, the others turn off as well, including
the bottom axes. That is bad.
Does anyone know of a good workaround for this?
To obtain what you want you have to set the tick labels invisible is
the axes where you don't want them to show up.
From http://matplotlib.org/examples/pylab_examples/shared_axis_demo.html:
setp( ax.get_xticklabels(), visible=False)
As the axis are shared, the ticklabels are also shared, so setting
them to , erase them from all the axes.
I hope that this helps.
Cheers,
Francesco
Thanks for your help.
-dw
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Re: [Matplotlib-users] strange behaviour with fill_between
Dear Eric, sorry for the delay in replying, and thanking: I forgot the mail after reading it. 2012/8/30 Eric Firing efir...@hawaii.edu: On 2012/08/27 5:10 AM, Francesco Montesano wrote: Dear matplotlibers, I encountered a bug (?) in fill_between when using logarithmic scales and the last part of y and yerr arrays as set to zero: a diagonal stripe going from the rightmost non zero value to the first value is drawn. It's visible in the right panel of the attached figure, while is not present if the plot is linear (left panel). If xaxis is log and yaxis is linear the plot is correctly drawn. I'm using mpl.__version__ = '1.1.1rc' under Kubuntu 12.04 with Python 2.7.3 The plot has been created with the script below. Is this a bug or am I missing something? I don't think it is exactly a bug, but I don't know why the fill region is appearing as it does. The underlying problem is that fill_between is doing what it is told to do without knowing that it is going to be plotted on a log axis. I think that also most of the other plotting functions (e.g. errorbar) do not know about the scale used on the axis, but they behave correctly. Am I right? A good workaround is to change your call to fill_between to look like this: positive = y - yerr 0 ax2.fill_between( x,y-yerr,y+yerr, where=positive, color='b', alpha=0.4) Alternatively, you could use np.clip to put a floor under y - yerr and y + yerr. The workaround works fine, but I dare say that it's not THE solution. I think that the problem lies in the way PolyCollection is drawn when y=yerr=0 (and probably also if y+- yerr =0) if the yaxis is log. I have no clue where to look in the source to go deeper in the problem. cheers, Fra Eric Cheers Francesco # error_fill_between.py ## import matplotlib.pyplot as plt import numpy as np #values to plot x = np.linspace( 1, 10, num=100 ) y = np.exp( -x**2 ) y[50:] = 0 yerr = y* np.random.rand(100) #figure fig = plt.figure() ax1 = fig.add_subplot(121) #first axes: linear ax1.errorbar( x,y,yerr, c='r' ) ax1.fill_between( x,y-yerr,y+yerr, color='b', alpha=0.4 ) ax2 = fig.add_subplot(122) #second axes: logarithmic ax2.errorbar( x,y,yerr, c='r' ) ax2.fill_between( x,y-yerr,y+yerr, color='b', alpha=0.4 ) ax2.set_xscale( log ) ax2.set_yscale( log ) plt.show() ## end script # -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] strange behaviour with fill_between
Dear matplotlibers, I encountered a bug (?) in fill_between when using logarithmic scales and the last part of y and yerr arrays as set to zero: a diagonal stripe going from the rightmost non zero value to the first value is drawn. It's visible in the right panel of the attached figure, while is not present if the plot is linear (left panel). If xaxis is log and yaxis is linear the plot is correctly drawn. I'm using mpl.__version__ = '1.1.1rc' under Kubuntu 12.04 with Python 2.7.3 The plot has been created with the script below. Is this a bug or am I missing something? Cheers Francesco # error_fill_between.py ## import matplotlib.pyplot as plt import numpy as np #values to plot x = np.linspace( 1, 10, num=100 ) y = np.exp( -x**2 ) y[50:] = 0 yerr = y* np.random.rand(100) #figure fig = plt.figure() ax1 = fig.add_subplot(121) #first axes: linear ax1.errorbar( x,y,yerr, c='r' ) ax1.fill_between( x,y-yerr,y+yerr, color='b', alpha=0.4 ) ax2 = fig.add_subplot(122) #second axes: logarithmic ax2.errorbar( x,y,yerr, c='r' ) ax2.fill_between( x,y-yerr,y+yerr, color='b', alpha=0.4 ) ax2.set_xscale( log ) ax2.set_yscale( log ) plt.show() ## end script # error_fill_between.pdf Description: Adobe PDF document -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] basemap via macports
2012/8/24 Carlos Grohmann carlos.grohm...@gmail.com: Hello all, I just did a fresh macports install, and installed py27-matplotlib-basemap, so all dependencies were installed as well. After installing python, I did run port-select (or something like it) to make sure I'm using macports python. My problem is that I can't run it: GuanoMac:~ guano$ python Python 2.7.2 (v2.7.2:8527427914a2, Jun 11 2011, 15:22:34) [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin Type help, copyright, credits or license for more information. from mpl_toolkits.basemap import Basemap Traceback (most recent call last): File stdin, line 1, in module ImportError: No module named basemap Anyone experienced in this kind of installation could share hints? if you do import sys print sys.path you can check if the directory of basemap is in your path if not, you can add it both in the scritp/session appending/inserting/extending sys.path (which is a list): e.g.: sys.path.append( dir/to/basemap ) or in the .profile, .bash_profile or .bash_rc files (in this way is loaded in every session) export PYTHONPATH=$PYTHONPATH:dir/to/basemap cheers, Francesco tks Carlos -- Prof. Carlos Henrique Grohmann Institute of Geosciences - Univ. of São Paulo, Brazil - Digital Terrain Analysis | GIS | Remote Sensing - http://carlosgrohmann.com Can’t stop the signal. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Axis ticks 'zorder'
Hi, 2012/7/30 oc-spam65 oc-spa...@laposte.net: Hello, Can the 'zorder' of the ticks be set? This minimal example shows a hard-coded value of 2.5 This may come from file matplotlib/axes.py, function draw(). Can it be adjusted? Shall it be bug-reported? ### import matplotlib.pyplot as pyplot fig = pyplot.figure() ax = fig.add_subplot(111) ax.add_patch(pyplot.Rectangle((0,0), 1, 1, zorder=3)) ax.xaxis.set_zorder(4) # Expected behavior: the ticks should be drawn after the Rectangle, # because 4 3. They should therefore be visible. pyplot.show() # Problem: The ticks are hidden by the rectangle, contrary to the # expected behavior. print(ax.xaxis.get_zorder()) # Prints 2.5 instead of 4! ### I confirm the bug on matplotlib v: 1.1.0, Kubuntu 11.04, Python 2.7.1+ ax.xaxis.set_zorder(4) ax.xaxis.get_zorder() 4 plt.draw() ax.xaxis.get_zorder() It seems that the call to draw or show sets the zorder to default, instead of updating it. @Mr Spam (can you sign your mail, please) In one of my scripts managed to set zorder to the spines as, e.g., ax.spines['left'].set_zorder(101). This puts the axis spine well on top, but ax.xaxis.set_zorder does nothing. I've also found a method ax.tick_params, that has a zorder keyword, but it does nothing too. Cheers, Francesco -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Placing a 'title' inside a legend
Hi Andreas, 2012/7/27 Andreas Hilboll li...@hilboll.de: Hi, I'd like to place something like a 'title' inside a legend's box. In my specific case, I have a legend with 5 entries, arranged in 5 columns, so they're horizontally next to each other in one row. Now what I'd like to have is inside the legend's box a first row (above the legend entries), where I can write some text. Any ideas? The keyword 'title' in legend (http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.legend) should work. Francesco Cheers, Andreas. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Placing a 'title' inside a legend
Hi Andreas, 2012/7/27 Andreas Hilboll li...@hilboll.de: Hi Andreas, 2012/7/27 Andreas Hilboll li...@hilboll.de: Hi, I'd like to place something like a 'title' inside a legend's box. In my specific case, I have a legend with 5 entries, arranged in 5 columns, so they're horizontally next to each other in one row. Now what I'd like to have is inside the legend's box a first row (above the legend entries), where I can write some text. Any ideas? The keyword 'title' in legend (http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.legend) should work. Almost embarassingly simple ... however: It looks like the title is in a smaller font size than the other legend texts. Do I have some control about the font size of the legend's title? Couldn't find anything in the plt.legend docstring (I'm on 1.1.1). try: l = ax.legend( patches, labels, ..., title=legend title) t = l.get_title() #get the text object containing the title t.set_fontsize(30) #set the font size you can merge the last two lines together l.get_title().set_fontsize(30) Francesco Cheers, A. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] How to plot only a legend?
Hi Andreas, 2012/7/26 Andreas Hilboll li...@hilboll.de: Hi, I would like to create a figure which only contains a legend, and no axes at all. I would like to manually assign the colors. I found this here: http://stackoverflow.com/a/3302666 but from there on, I'd like to remove the axes, and put the legend into three columns. If the plot attached it's fine for you it's easy: import matplotlib.pyplot as plt ax = plt.subplot() #create the axes ax.set_axis_off() #turn off the axis #do patches and labels ax.legend(patches, labels, ...) #legend alone in the figure plt.show() Cheers, Francesco Any help is greatly appreciated :) Andreas. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users test.pdf Description: Adobe PDF document -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] How to plot only a legend?
Hi,
you should be also able to create the axes as:
ax = plt.figure( figsize=(x,y) ).add_subplot(111)
with figsize big enough to fit just the legend
Cheers
Francesco
2012/7/26 Damon McDougall damon.mcdoug...@gmail.com:
On Thu, Jul 26, 2012 at 06:05:39PM +0200, Andreas Hilboll wrote:
Hi Andreas,
2012/7/26 Andreas Hilboll li...@hilboll.de:
Hi,
I would like to create a figure which only contains a legend, and no
axes
at all. I would like to manually assign the colors. I found this here:
http://stackoverflow.com/a/3302666
but from there on, I'd like to remove the axes, and put the legend into
three columns.
If the plot attached it's fine for you it's easy:
import matplotlib.pyplot as plt
ax = plt.subplot() #create the axes
ax.set_axis_off() #turn off the axis
#do patches and labels
ax.legend(patches, labels, ...) #legend alone in the figure
plt.show()
Cheers,
Francesco
That's really easy :) I could live with this solution, applying some
external tool like pdfcrop to the result. Of course, it would be nicer if
the PDF's page size would be exactly that of the legend (plus some
margin), so that I wouldn't have to resort to external tools ...
Any ideas?
How about
plt.savefig('roflcakes.png', bbox_inches='tight', pad_inches=0.1)
Since the other artists are invisible, that should crop to just your
legend. I'm assuming matplotlib updates the BoundingBox such that it
doesn't include invisible artists.
Cheers, A.
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Re: [Matplotlib-users] Combining 4 plots into one figure
Hi Brad, 2012/7/19 Alexander Eberspaecher alexander.eberspaec...@ovgu.de: On Wed, 18 Jul 2012 15:50:50 -0700 Brad Malone brad.mal...@gmail.com wrote: Hi, I have a collection of 4 plots that I spent some time in constructing. They themselves include modifications of the axes labels, have rotated subplots next to them, etc. I need to be able to take these 4 plots and consolidate them into a single plot (referee suggestion to save space). Assuming you are using LaTeX to write your paper, you could use a LaTeX solution. Here are some links: http://en.wikibooks.org/wiki/LaTeX/Floats,_Figures_and_Captions#Subfloats ftp://ctan.tug.org/tex-archive/macros/latex/contrib/subfig/subfig.pdf This might be easier - and would also make your figures more reusable (for e.g. presentations). The solution from Alex might work, but not being optimal in saving space, in particular if you can share axis. The labels (a),(b),... can be inserted in the figures with a.text(x,y,'(a)', ... ). I know that some journals want them in the figure and not made with latex, so you probably have to rerun your script with the text added. If you want to make a unique figure you can try to declare the axis directly, insead of using subplot, and play with the rect keyword: http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.axes . You can also play with gridspec (http://matplotlib.sourceforge.net/users/gridspec.html), but I've never used myself Cheers, Francesco -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] gallery link broken/not working
Hi, roaming through the gallery I've found that in http://matplotlib.sourceforge.net/examples/pylab_examples/demo_tight_layout_00.html http://matplotlib.sourceforge.net/examples/pylab_examples/demo_tight_layout_01.html http://matplotlib.sourceforge.net/examples/axes_grid/demo_axes_divider_01.html and maybe others do not work error: 1. Server: matplotlib.sourceforge.net 2. URL path: /examples/pylab_examples/demo_tight_layout_00.html 3. Error notes: NONE 4. Error type: 404 5. Request method: GET 6. Request query string: NONE 7. Time: 2012-07-19 09:12:32 UTC (1342689152) http://matplotlib.sourceforge.net/examples/pylab_examples/demo_tight_layout.html works fine Cheers, Francesco -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] need an icon for a new featureH
2012/7/19 Nicolas Rougier nicolas.roug...@inria.fr: What size/format do you need and would that be an option to transform/use Tango icons ? http://tango.freedesktop.org/ http://commons.wikimedia.org/wiki/Tango_icons Tango (for fullscreen but might suit tight-layout) Nicolas On Jul 19, 2012, at 0:47 , Benjamin Root wrote: Hello all! I have just about completed a PR that would add a new button to the navigation toolbar for the tight_layout() action. I am hardly an artist and have no clue how to graphically represent the tight_layout action in a tiny icon. I would greatly welcome any graphics artist out there who could provide such an icon for matplotlib. Thanks! Ben Root -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users Hi What about modify the icon suggested by Nicolas with a small square inside the arrows? Francesco -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] gallery link broken/not working
done: https://github.com/matplotlib/matplotlib/issues/1024 Fra 2012/7/19 Phil Elson pelson@gmail.com: I can confirm the bad link. Would you mind opening a new issue on github for this? github.com/matplotlib/matplotlib/issues/new Thanks, On 19 July 2012 10:15, Francesco Montesano franz.berges...@gmail.com wrote: Hi, roaming through the gallery I've found that in http://matplotlib.sourceforge.net/examples/pylab_examples/demo_tight_layout_00.html http://matplotlib.sourceforge.net/examples/pylab_examples/demo_tight_layout_01.html http://matplotlib.sourceforge.net/examples/axes_grid/demo_axes_divider_01.html and maybe others do not work error: 1. Server: matplotlib.sourceforge.net 2. URL path: /examples/pylab_examples/demo_tight_layout_00.html 3. Error notes: NONE 4. Error type: 404 5. Request method: GET 6. Request query string: NONE 7. Time: 2012-07-19 09:12:32 UTC (1342689152) http://matplotlib.sourceforge.net/examples/pylab_examples/demo_tight_layout.html works fine Cheers, Francesco -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] mimic alpha (channel) v0.1
2012/7/18 Francesco Montesano franz.berges...@gmail.com: 2012/7/18 Jonathan Slavin jsla...@cfa.harvard.edu: Ben, Yes, you're right, but I doubt any solution that involves mimicking an alpha channel will work for one case that I've been using. That is, making the legend box partially transparent. I use that to allow the box to fit in the plot without blocking the data and without the need to make the upper y limit too large. My solution would probably work if you could, pixel by pixel (or patch by patch), mimic alpha in each layer using as background the resulting color of the previous layer. Do anyone know if it is possible to implement something like this in matplotlib when saving a eps or in a backend? I don't notice any problems with blockiness in the text or lines in the raster image. I'll find out soon if the editors of the Astrophysical Journal are okay with the figures. I guess that you produce the figures roughly of the right size (about 8 or 16 cms wide for single or double column figures) and then convert. So probably you see that the figure is a raster if you zoom in. Fra Jon On Tue, 2012-07-17 at 15:34 -0500, Benjamin Root wrote: On Tue, Jul 17, 2012 at 3:01 PM, Jonathan Slavin jsla...@cfa.harvard.edu wrote: Francesco, While I like your solution, there is an alternative that is simpler and works for me. That is 1) save matplotlib plot as a png, 2) convert to eps using either ImageMagick or GraphicsMagick. You do end up with relatively large files, but they look identical to the original plots. Regards, Jon No, it is not the same thing. Text in a vector-based format such as eps is scalable. ImageMagick and GraphicsMagick are inherently raster-based, and before that, PNGs are raster-based. Therefore, the text is not scaled and anti-aliased according to the display size. I will be looking over the proposed solution this evening. Cheers! Ben Root Dear matplotlibers, I've uploaded a new version which accepts also lists/tuple/numpy arrays of colors and/or alphas and returns a list of RGB colors. https://github.com/montefra/mimic_alpha https://github.com/montefra/mimic_alpha/downloads Cheers, Francesco -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] mimic alpha (channel) v0.1
2012/7/18 Jonathan Slavin jsla...@cfa.harvard.edu: Ben, Yes, you're right, but I doubt any solution that involves mimicking an alpha channel will work for one case that I've been using. That is, making the legend box partially transparent. I use that to allow the box to fit in the plot without blocking the data and without the need to make the upper y limit too large. My solution would probably work if you could, pixel by pixel (or patch by patch), mimic alpha in each layer using as background the resulting color of the previous layer. Do anyone know if it is possible to implement something like this in matplotlib when saving a eps or in a backend? I don't notice any problems with blockiness in the text or lines in the raster image. I'll find out soon if the editors of the Astrophysical Journal are okay with the figures. I guess that you produce the figures roughly of the right size (about 8 or 16 cms wide for single or double column figures) and then convert. So probably you see that the figure is a raster if you zoom in. Fra Jon On Tue, 2012-07-17 at 15:34 -0500, Benjamin Root wrote: On Tue, Jul 17, 2012 at 3:01 PM, Jonathan Slavin jsla...@cfa.harvard.edu wrote: Francesco, While I like your solution, there is an alternative that is simpler and works for me. That is 1) save matplotlib plot as a png, 2) convert to eps using either ImageMagick or GraphicsMagick. You do end up with relatively large files, but they look identical to the original plots. Regards, Jon No, it is not the same thing. Text in a vector-based format such as eps is scalable. ImageMagick and GraphicsMagick are inherently raster-based, and before that, PNGs are raster-based. Therefore, the text is not scaled and anti-aliased according to the display size. I will be looking over the proposed solution this evening. Cheers! Ben Root -- __ Jonathan D. Slavin Harvard-Smithsonian CfA jsla...@cfa.harvard.edu 60 Garden Street, MS 83 phone: (617) 496-7981 Cambridge, MA 02138-1516 cell: (781) 363-0035 USA __ -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] emulate transparency in eps
2012/6/20 Michael Droettboom md...@stsci.edu:
The postscript output of the Cairo backend supports transparency
emulation, though it hasn't been tested in some time. Eric's suggestion
(to output PDF and then convert to EPS) is also a reasonable one.
Mike
On 06/20/2012 10:38 AM, Francesco Montesano wrote:
Dear list,
it might be that this is not the best place to ask, but I guess that
there are enough people with experience with colors.
I think plots with nice colors and shaded areas are very nice, but for
my publication I have to use eps files, that do not support
transparency.
The script below produce a figure like the one that I would like to
make. If I save it as eps all the shaded areas are not transparent and
the plot look ugly and unreadable.
A way to emulate transparency that I've applied some time ago was to
get the RGB value of the transparent color (with DigitalColor Meter on
Mac) and to insert it by hand in fill_between, with a low value for
the zorder option. The results was fine, but I don't like too much
this approach, as any change in color or alpha value would require to
go, get the new color, insert it and redo the figure.
Is anyone aware of a way to obtain automatically a RGB color that on
screen or printed looks similar to the corresponding RGBA?
Thanks in advance,
Francesco
Sample code*
plot with errors done with fill_between. Emulation of alpha in eps
import itertools as it
import matplotlib.pyplot as plt
import numpy as np
col = it.cycle([ 'm', 'r', 'g', 'b', 'c', 'y', 'k', ])
ls = it.cycle( [ '-', '--', '-.', ':' ][::-1])
#figure
fig = plt.figure()
ax = fig.add_subplot(111)
x= np.linspace(0.5,5,100)
for i in range(3):
c = col.next()
l = ls.next()
ax.plot( x, np.sin(x)**i, color=c, ls=l,
label='$sin^{0}(x)$'.format(i), zorder=10+i )
ax.fill_between( x, np.sin(x)**i + 1./x, np.sin(x)**i - 1./x,
color=c, linestyle=l, alpha=0.5, zorder=i+1)
ax.legend(frameon=False)
plt.savefig(test_alpha.pdf)
plt.savefig(test_alpha.eps)
plt.show()
exit()
End sample code*
Hi,
I was doing again some search on the topic when I realised that I just
replied to Eric.
This is my reply (Eric sorry for sending this mail twice to you)
I remember trying to convert pdf to eps in different ways with usually
ugly results and/or very large files.
Now I've tried the following commands on test_alpha.pdf (from
http://tex.stackexchange.com/questions/20883/how-to-convert-pdf-to-eps):
i) pdf2ps -eps test_alpha.pdf test_alpha.conv.eps
ii) gs -q -dNOCACHE -dNOPAUSE -dBATCH -dSAFER -sDEVICE=epswrite
-sOutputFile=test_alpha.gs.eps test_alpha.pdf
the results are:
39K 2012-06-19 17:37 test_alpha.eps (original eps: no transparency)
23K 2012-06-19 17:37 test_alpha.pdf (original pdf: transparency)
90M 2012-06-20 20:20 test_alpha.gs.eps (converted with gs: transparency)
613K 2012-06-20 20:14 test_alpha.pdf2ps.eps (converted with pdf2ps:
transparency [from my understanding it uses gs])
In both the converted cases the texts (tick labels, legend) are badly
rendered. The lines and contours of the filled areas look noisier than
in the original pdf.
It might be that increasing the resolution the situation improves, but
the file size increases, which is not an option.
Michael, I've tried Cairo (import matplotlib as mpl; mpl.use(Cairo)
before importing pyplot), but the eps is not transparent.
Cheers,
Francesco
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[Matplotlib-users] emulate transparency in eps
Dear list,
it might be that this is not the best place to ask, but I guess that
there are enough people with experience with colors.
I think plots with nice colors and shaded areas are very nice, but for
my publication I have to use eps files, that do not support
transparency.
The script below produce a figure like the one that I would like to
make. If I save it as eps all the shaded areas are not transparent and
the plot look ugly and unreadable.
A way to emulate transparency that I've applied some time ago was to
get the RGB value of the transparent color (with DigitalColor Meter on
Mac) and to insert it by hand in fill_between, with a low value for
the zorder option. The results was fine, but I don't like too much
this approach, as any change in color or alpha value would require to
go, get the new color, insert it and redo the figure.
Is anyone aware of a way to obtain automatically a RGB color that on
screen or printed looks similar to the corresponding RGBA?
Thanks in advance,
Francesco
Sample code*
plot with errors done with fill_between. Emulation of alpha in eps
import itertools as it
import matplotlib.pyplot as plt
import numpy as np
col = it.cycle([ 'm', 'r', 'g', 'b', 'c', 'y', 'k', ])
ls = it.cycle( [ '-', '--', '-.', ':' ][::-1])
#figure
fig = plt.figure()
ax = fig.add_subplot(111)
x= np.linspace(0.5,5,100)
for i in range(3):
c = col.next()
l = ls.next()
ax.plot( x, np.sin(x)**i, color=c, ls=l,
label='$sin^{0}(x)$'.format(i), zorder=10+i )
ax.fill_between( x, np.sin(x)**i + 1./x, np.sin(x)**i - 1./x,
color=c, linestyle=l, alpha=0.5, zorder=i+1)
ax.legend(frameon=False)
plt.savefig(test_alpha.pdf)
plt.savefig(test_alpha.eps)
plt.show()
exit()
End sample code*
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Re: [Matplotlib-users] [matplotlib-users] definition to show quikly a plot
Dear Fabien 2012/5/29 Fabien Lafont lafont.fab...@gmail.com: Hello everyone, I have a problem. I have to look at many plots. Usely I do it like that: from pylab import* X1 = genfromtxt(Myfile.dat, usecols =(0)) Y1 = genfromtxt(Myfile.dat, usecols =(1)) plot(X1,Y1, label =My curve) show() But the problem is when I have many plots I have to copy paste and change manually all the name of the variables X1, X2, X3...etc. It's not really convenient. I want to create a def with the name of my file as argument which do something like that: from pylab import* def plotgraph(name): X_name = genfromtxt(name, usecols =(0)) Y_name = genfromtxt(name, usecols =(1)) plot(X_name,Y_name, label =name) plotgraph(MyFile) show() Try this: def plotgraph(name): Plot stuff: name: string file name X_name, Y_name = genfromtxt(name, usecols =(0,1)).T plot(X_name,Y_name, label =name) 'name' should contain already a string, so you have to pass it to genfromtxt. I you pass name, the file name is name and not the what is in the variable. Just a note: if you read the file as 'X_name, Y_name = genfromtxt(name, usecols =(0,1)).T' you open, read and close the file only once. Cheers, Francesco But it doesn't work. Do you know why? Do you have a smarter idea? Thanks! Fab -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- personals: monty...@yahoo.it, monte_...@hotmail.com (messenger), franz.berges...@googlemail.com. work: monte...@mpe.mpg.de http://picasaweb.google.it/franz.bergesund -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] [matplotlib-users] definition to show quikly a plot
2012/5/29 Fabien Lafont lafont.fab...@gmail.com: Thx Francesco, it works great! What for the .T at the end of genfromtxt? genfromtxt with usecols=(0,1) return an array with 2 columns. with .T you transpose it so that you can save it in two variables. For more info, e.g., http://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.T.html#numpy-ndarray-t Cheers, Francesco 2012/5/29 Francesco Montesano franz.berges...@googlemail.com: Dear Fabien 2012/5/29 Fabien Lafont lafont.fab...@gmail.com: Hello everyone, I have a problem. I have to look at many plots. Usely I do it like that: from pylab import* X1 = genfromtxt(Myfile.dat, usecols =(0)) Y1 = genfromtxt(Myfile.dat, usecols =(1)) plot(X1,Y1, label =My curve) show() But the problem is when I have many plots I have to copy paste and change manually all the name of the variables X1, X2, X3...etc. It's not really convenient. I want to create a def with the name of my file as argument which do something like that: from pylab import* def plotgraph(name): X_name = genfromtxt(name, usecols =(0)) Y_name = genfromtxt(name, usecols =(1)) plot(X_name,Y_name, label =name) plotgraph(MyFile) show() Try this: def plotgraph(name): Plot stuff: name: string file name X_name, Y_name = genfromtxt(name, usecols =(0,1)).T plot(X_name,Y_name, label =name) 'name' should contain already a string, so you have to pass it to genfromtxt. I you pass name, the file name is name and not the what is in the variable. Just a note: if you read the file as 'X_name, Y_name = genfromtxt(name, usecols =(0,1)).T' you open, read and close the file only once. Cheers, Francesco But it doesn't work. Do you know why? Do you have a smarter idea? Thanks! Fab -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- personals: monty...@yahoo.it, monte_...@hotmail.com (messenger), franz.berges...@googlemail.com. work: monte...@mpe.mpg.de http://picasaweb.google.it/franz.bergesund -- personals: monty...@yahoo.it, monte_...@hotmail.com (messenger), franz.berges...@googlemail.com. work: monte...@mpe.mpg.de http://picasaweb.google.it/franz.bergesund -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] position of xtick labels
Dear Nils, you can try to play with i) ax.axis[right, top, bottom, left] and their methods (see setup_axis3 here http://matplotlib.sourceforge.net/examples/axes_grid/demo_floating_axes.html for an example) ii) twinx and twiny axes (example http://matplotlib.sourceforge.net/examples/api/two_scales.html ) The first one can be a bit confusing with orientations. Once I found an explanation about it on matplotlib website, but I cannot find it right now. The second way creates a second axis that you probably don't need. Cheers, Francesco Il 27 aprile 2012 11:48, Nils Wagner nwag...@iam.uni-stuttgart.de ha scritto: Hi all, I would like to add different xtick labels on the top and bottom of a figure. The number and position of the xticks is the same. How can I do that ? An example would be appreciated. Nils -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] position of xtick labels
Dear Nils, I think that I've found what you need (example adapted from http://notes.brooks.nu/2008/03/plotting-on-left-and-right-axis-simulateously-using-matplotlib-and-numpy/ ) import matplotlib.pyplot as plt import numpy as np #data to plot x = np.linspace(0,5,num=100) y = np.sinc(x) fig = plt.figure(figsize=(16,10)) #figure ax= fig.add_subplot(111)#axis containing the figure ax1 = fig.add_subplot(111, sharex=ax, sharey=ax, frameon=False) #axis that shares both x and y and without frame (so ax is visible) ax.plot(x, y) #plot the data ax1.xaxis.tick_top() #show ticks on top ax1.yaxis.tick_right() #show ticks on the right Now if you do any modification on the ax limits should reflect on ax1. Might be that there is some smarter way of doing it, but if the project is not too long and efficiency is not a problem, I think that this example will suffice Cheers, Francesco Il 27 aprile 2012 14:50, Nils Wagner nils...@googlemail.com ha scritto: Dear Francesco, Thank you for your prompt reply ! My incomplete example is below. import matplotlib.pyplot as plt fig = plt.figure(figsize=(16,10)) ax = fig.add_subplot(111) ind = np.arange(nfreq) yoff = np.array([0.0]*nfreq) for row in range(nsets): ax.bar(ind,A[row,:],width,bottom=yoff, color=colours[row],label=elabel[row]) yoff = yoff + A[row,:] plt.legend(loc=upper left, bbox_to_anchor=(1,1)) plt.xticks(ind+0.5*width,np.arange(nfreq)+1,rotation=90) ax.set_xlim(0.,nfreq) ax.set_ylim(0.,102.) plt.subplots_adjust(left=0.075, right=0.85, top=0.9, bottom=0.05) plt.show() How can I add xtick labels on the top of my figure ? Cheers, Nils On 4/27/12, Francesco Montesano franz.berges...@googlemail.com wrote: Dear Nils, you can try to play with i) ax.axis[right, top, bottom, left] and their methods (see setup_axis3 here http://matplotlib.sourceforge.net/examples/axes_grid/demo_floating_axes.html for an example) ii) twinx and twiny axes (example http://matplotlib.sourceforge.net/examples/api/two_scales.html ) The first one can be a bit confusing with orientations. Once I found an explanation about it on matplotlib website, but I cannot find it right now. The second way creates a second axis that you probably don't need. Cheers, Francesco Il 27 aprile 2012 11:48, Nils Wagner nwag...@iam.uni-stuttgart.de ha scritto: Hi all, I would like to add different xtick labels on the top and bottom of a figure. The number and position of the xticks is the same. How can I do that ? An example would be appreciated. Nils -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- personals: monty...@yahoo.it, monte_...@hotmail.com (messenger), franz.berges...@googlemail.com. work: monte...@mpe.mpg.de http://picasaweb.google.it/franz.bergesund -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] mpl_toolkits.axisartist.floating_axes.FloatingSubplot required option
Dear matplotlibers, I know almost nothing about mpl_toolkits (matplolib.__version__ = 1.1.0). From the help of mpl_toolkits.axisartist.floating_axes.FloatingSubplot, the init function reads __init__(self, fig, *args, **kwargs) In the example here (http://matplotlib.sourceforge.net/examples/axes_grid/demo_floating_axes.html) the object is initialised as FloatingSubplot(fig, rect, grid_helper=grid_helper) If I take out 'grid_helper' I get this error: ValueError: FloatingAxes requires grid_helper argument In my understanding, **kwargs (like grid_helper) are optional arguments and I think that 'required' options do not make much sense. Besides its not documented in the help of the class. Could grid_helper be upgraded to *args? Cheers, Francesco -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] (no subject)
From: Francesco Montesano franz.berges...@googlemail.com To: Dorm Eight dormei...@yahoo.com Cc: matplotlib-users@lists.sourceforge.net matplotlib-users@lists.sourceforge.net Sent: Tuesday, March 27, 2012 3:38 PM Subject: Re: [Matplotlib-users] (no subject) Il 27 marzo 2012 05:08, Dorm Eight dormei...@yahoo.com ha scritto: hi, everybody! when I run my script, why there is no figure show up? I downloaded the demos from matplotlib gallery and it didn't work either. x=np.arange(100) y=x**2+3*x-1 pl.plot(x,y) [matplotlib.lines.Line2D object at 0x2581050] pl.show() there is no error, no figure pop-up! Thank you for any answer! Hi Dorm If you can send more info about the operating system and matplotlib version, it's easier to help you (for the latter do import matplotlib print matplotlib.__version__ ) Cheers, Francesco -- This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users Il 30 marzo 2012 13:23, Dorm Eight dormei...@yahoo.com ha scritto: Dear Dorm, please reply to all the list. My system is Fedora 3.3.0-4.fc16.x86_64, after I recently updated the system with 'yum update', the problem appeared. the Matplotlib version is 1.10. I have no idea at all now. I've tested your small example on python 2.6, matplotlib 1.0.0 with MacOSX backend and on Kubuntu 11.04, python 2.7, matplotlib 1.1, with TkAgg and Qt4Agg backends and the small code works for me. In all cases I have set plt.ion() If you save the figure instead of showing, does it work? Which backend are you using: the name is stored in matplotlib.backends.backend Cheers Francesco -- This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] (no subject)
Dear Dorm, Il 30 marzo 2012 14:17, Dorm Eight dormei...@yahoo.com ha scritto: Dear Francesco, Yes, I just tried it, it can be save perfectly. so might be a problem with the backend. Give a look to this page: http://stackoverflow.com/questions/2512225/matplotlib-not-showing-up-in-mac-osx and try to change the backend. I think that I cannot help much more here. Does anyone else has an idea if there might be any other problem? Cheers, Francesco From: Francesco Montesano franz.berges...@googlemail.com To: Dorm Eight dormei...@yahoo.com; matplotlib-users@lists.sourceforge.net Sent: Friday, March 30, 2012 8:01 PM Subject: Re: [Matplotlib-users] (no subject) From: Francesco Montesano franz.berges...@googlemail.com To: Dorm Eight dormei...@yahoo.com Cc: matplotlib-users@lists.sourceforge.net matplotlib-users@lists.sourceforge.net Sent: Tuesday, March 27, 2012 3:38 PM Subject: Re: [Matplotlib-users] (no subject) Il 27 marzo 2012 05:08, Dorm Eight dormei...@yahoo.com ha scritto: hi, everybody! when I run my script, why there is no figure show up? I downloaded the demos from matplotlib gallery and it didn't work either. x=np.arange(100) y=x**2+3*x-1 pl.plot(x,y) [matplotlib.lines.Line2D object at 0x2581050] pl.show() there is no error, no figure pop-up! Thank you for any answer! Hi Dorm If you can send more info about the operating system and matplotlib version, it's easier to help you (for the latter do import matplotlib print matplotlib.__version__ ) Cheers, Francesco -- This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users Il 30 marzo 2012 13:23, Dorm Eight dormei...@yahoo.com ha scritto: Dear Dorm, please reply to all the list. My system is Fedora 3.3.0-4.fc16.x86_64, after I recently updated the system with 'yum update', the problem appeared. the Matplotlib version is 1.10. I have no idea at all now. I've tested your small example on python 2.6, matplotlib 1.0.0 with MacOSX backend and on Kubuntu 11.04, python 2.7, matplotlib 1.1, with TkAgg and Qt4Agg backends and the small code works for me. In all cases I have set plt.ion() If you save the figure instead of showing, does it work? Which backend are you using: the name is stored in matplotlib.backends.backend Cheers Francesco -- This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] (no subject)
Il 27 marzo 2012 05:08, Dorm Eight dormei...@yahoo.com ha scritto: hi, everybody! when I run my script, why there is no figure show up? I downloaded the demos from matplotlib gallery and it didn't work either. x=np.arange(100) y=x**2+3*x-1 pl.plot(x,y) [matplotlib.lines.Line2D object at 0x2581050] pl.show() there is no error, no figure pop-up! Thank you for any answer! Hi Dorm If you can send more info about the operating system and matplotlib version, it's easier to help you (for the latter do import matplotlib print matplotlib.__version__ ) Cheers, Francesco -- This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Looking for a good color map that works both for color and bw
2012/1/16 Michael Cracraft michael.cracr...@gmail.com: I prepared some plots for a conference paper using pcolormesh. The plots need to work both for color and for a bw print copy. Does anyone have a goto color map for that sort of occassion? I was using YlGrBu, but I'm just not happy with it. Thanks, Michael -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users Dear Michael, Recently I've used 'hot' which I think is very clear in color and works perfectly in grayscale. Cheers, Francesco -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] legend border, frameon keyword
Hi,
I usually do like this
l = ax.legend( (rects1[0], rects2[0]), ('set1', 'set2'))
l.draw_frame(False)
Cheers,
Francesco
2011/11/9 magurling magurl...@gmail.com:
I want a legend without the black border. I've tried a few things that have
been suggested on this forum and elsewhere to no avail. According to what
I've seen, it should be as simple as:
import matplotlib.pyplot as plt
import numpy as np
N = 5
Means1 = (20, 35, 30, 35, 27)
Means2 = (25, 32, 34, 20, 25)
ind = np.arange(N) # the x locations for the groups
width = 0.20 # the width of the bars
fig = plt.figure()
ax = fig.add_subplot(111)
rects1 = ax.bar(ind, Means1, width, color='k')
rects2 = ax.bar(ind+width, Means2, width, color='w')
ax.legend( (rects1[0], rects2[0]), ('set1', 'set2'), frameon=False )
plt.show()
It all works except for frameon=False
I get this:
/usr/lib/pymodules/python2.7/matplotlib/axes.pyc in legend(self, *args,
**kwargs)
4042
4043 handles = cbook.flatten(handles)
- 4044 self.legend_ = mlegend.Legend(self, handles, labels,
**kwargs)
4045 return self.legend_
4046
TypeError: __init__() got an unexpected keyword argument 'frameon'
I've also checked my matplotlibrc under the Legend section and I don't see
a legend.frameon line.
It must be something simple that I am doing wrong. Any ideas?
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Re: [Matplotlib-users] fill with a semilogy axis?
Hi Michael, I use fill_between() and log axis without problems in the following way (it's by memory, I hope the sintax is correct) fig = plt.figure() spl = fig.add_subplot(111) spl.fill_between(x,y1,y2) spl.set_yscale(log) plt.show() Cheers, Fra Il giorno 06/mag/2011, alle ore 01.34, Benjamin Root ha scritto: On Tue, May 3, 2011 at 3:40 AM, K.-Michael Aye kmichael@gmail.com wrote: A colleague posed an interesting challenge: How to do a filled plot having the y-axis in logarithm? I think I can do it with creating patches myself an adding it to the axis, but isn't there anything built-in? Best regards, Michael Does fill_between() not work for you? Note, I have never tried it on a log scale plot. Ben Root -- WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] multiline legend tags
Dear all,
I have a rather complex code that takes a list of file names and of
legend tags from command line and compute contour plots
./contour_plots.py [options] filename1 ... filename2 tag1 ... tagn
The codes make filled contours at required levels, then line contours.
From the latter I extract one line from each file and create a legend
spl.legend(lines, [tag1...tagn], other options)
All it works fine. The only problem is that sometimes I have tags that
are long and I would like to be able to break between multiple lines.
In examples/legend_demo3.py is shown that 'ax1.plot([1],
label=multi\nline)' the \n is interpreted (correctly) as new line.
Normaly I have something like
./contour_plots.py [options] filename1 \(long\)tag\$_\{very long\}\$
that gives me a legend with the correct formatting. If I try to add a
'\n' after 'tag', I get out the tag as before plus a 'n' after 'tag'.
I've tried to enclose the whole string or just \n in or r but
nothing good happens (either I get 'n' or 'rn').
Is there a way to do what I want to do?
Thanks in advance
Francesco
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Re: [Matplotlib-users] hide labels
Dear all again, I've tried to play with it again, but I couldn't find a solution for the problem. For clarity I report an example of what each of the subplots looks like: import numpy as np import matplotlib.pyplot as plt mean = np.array([-0.9206394, -0.90127456, -0.91983625, -0.97765539, -1.02991184, -1.02267017, -0.97730167, -0.93715172, -0.94324653, -0.92884379]) stddev = np.array([0.16351397, 0.15075966, 0.13413909, 0.15404823, 0.13559582, 0.13109754, 0.12128598, 0.11589682, 0.11921571, 0.10866761]) ax = plt.figure().add_axes([0.1,0.1,0.8,0.8]) ax.errorbar(np.arange(10,20)/100., mean, yerr=stddev) ax.set_xlim([0.095, 0.195]) lab = ax.get_ymajorticklabels() print lab for i in lab: print i plt.show() as output of this script I get a list of 7 Text yticklabel objects Text(0,0,'') Text(0,0,'') Text(0,0,'') Text(0,0,'') Text(0,0,'') Text(0,0,'') Text(0,0,'') In the plot instead I only have only 5 y tick labels, as visible from the attachment. In this case if I set the first and the last label invisible, nothing changes, and if I have other plots under this the plot becomes ugly/unreadable. I hope to have been clearer than in my previous mail. Any suggestion on how to fix or find a workaround in order to get the same number of tick labels as the ones actually plotted. Thank in advance Fra 2011/2/1 Francesco Montesano franz.berges...@googlemail.com: Dear all, I'm producing a single figure with subplots arrange in a single columns. They all share the same x range but the y variable change from subplot to subplot In order have a nicer figure I hide the first and the last y label of each subplot in the following way ytl = subpl.get_ymajorticklabels() ytl[0].set_visible(False) ytl[-1].set_visible(False) It was well in most cases. But I've noticed that in some plot the first and/or the last label remains. In this cases, if I print ytl, it writes a list of n Text yticklabel objects, where n is larger by 1 or 2 than the number of labels shown before I make them invisible. So I end up having some label (nearly) exactly on the upper and/or bottom range of the plot. Is there a way to force the axis to return exactly the number of labels shown in the plot? Thanks in advance, Francesco -- personals: monty...@yahoo.it, monte_...@hotmail.com (messenger), franz.berges...@googlemail.com. work: monte...@mpe.mpg.de http://picasaweb.google.it/franz.bergesund attachment: example.png-- The modern datacenter depends on network connectivity to access resources and provide services. The best practices for maximizing a physical server's connectivity to a physical network are well understood - see how these rules translate into the virtual world? http://p.sf.net/sfu/oracle-sfdevnlfb___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Limits with errorbar
Hi Paul, 2011/2/1 Paul Ivanov pivanov...@gmail.com I'm not sure what you're hoping to see, but you should either use xerr with xuplims, or yerr with uplims. Thank you for the reply. As usually I checked everything except the correct one. By the way, if one uses (by error) yerr and xuplims/xlolims or xerr and uplims/lolims, no error bar shows up. Is this a bug or a feature? Cheers, Fra -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Limits with errorbar
Dear all, I am trying to make a plot with errorbars and upperlimits. I've found the following pylab example http://matplotlib.sourceforge.net/examples/pylab_examples/errorbar_limits.htmland it works fine both on a Mac OSX10.6 with python 2.6.1 and on Kubuntu 10.04 with python 2.6.5. I've tried the to reproduce the example using matplotlib.pyplot but the limits do not show up, regardless of syntax or system (matplotlib 1.0.0 on Mac and 1.0.1 on Kubuntu) I attach a sample code which does not work. import numpy as np import matplotlib.pyplot as plt #create function to plot plus random error x = np.linspace(0,3,100) y = np.sin(x) err = np.random.random(100) plt.errorbar(x,y, yerr=err, color='g',linestyle='None',xuplims=True) plt.show() Does anyone know how to solve this problem? Thanks in advance, Francesco -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] hide labels
Dear all, I'm producing a single figure with subplots arrange in a single columns. They all share the same x range but the y variable change from subplot to subplot In order have a nicer figure I hide the first and the last y label of each subplot in the following way ytl = subpl.get_ymajorticklabels() ytl[0].set_visible(False) ytl[-1].set_visible(False) It was well in most cases. But I've noticed that in some plot the first and/or the last label remains. In this cases, if I print ytl, it writes a list of n Text yticklabel objects, where n is larger by 1 or 2 than the number of labels shown before I make them invisible. So I end up having some label (nearly) exactly on the upper and/or bottom range of the plot. Is there a way to force the axis to return exactly the number of labels shown in the plot? Thanks in advance, Francesco -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Legend for contour plots
Dear Paul, Thank you, it does exacly what I want to do. I searched a bit into the contour instance, but I was biased since I was looking for something like get_line. cheers Francesco 2011/1/21 Paul Ivanov pivanov...@gmail.com: Francesco Montesano, on 2011-01-21 15:44, wrote: Dear All, I am using contour plot and I am drawing different contours with different colors and linestyles and I would like to have a legend with a caption for each contour function used. Here you can see an example of what I would like to do #create the 2D histogram and the x and y axis x, y = np.random.normal(0, 0.5, 1000), np.random.normal(0, 1, 1000) h, xe,ye = np.histogram2d(x,y, bins=25) xe, ye = (xe[1:]+xe[:-1])/2, (ye[1:]+ye[:-1])/2 lines,text = [], [] # initialise lists #contour plots lines.append(plt.contour(xe,ye,h, levels=[10,9], linestyles=-, colors=k)) text.append(level=10, 9) lines.append(plt.contour(xe,ye,h, levels=[5,4], linestyles=--, colors=r)) text.append(level=5, 4) plt.legend(lines, text) Everything goes well untill I plot the legend. At the end of the mail I report the error that I get. Anyway, if I do plt.legend(lines) I don't get any errors but it's quite useless, since the text of the legend is just like: matplotlib.contour.ContourSet instance at 0x6bedc20 as you can see from the attached figure. I've the feeling that the problem is that contour gives back a matplotlib.contour.ContourSet instance, while the functions like plot gives back a matplotlib.lines.Line2D object. Does anyone knows how to do what I want? Hi Francesco, here's one way of getting what you want, instead of calling legend on your 'lines' variable as you had it, do this: actual_lines = [cs.collections[0] for cs in lines] plt.legend(actual_lines, text) As you note, the call to plt.countour does not return lines, it returns contour sets (which is why I called the variable 'cs' in my example). Poking around in ipython, I saw that each contour set has a collections attribute which holds the actual lines. hope that helps, -- Paul Ivanov 314 address only used for lists, off-list direct email at: http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7 -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (GNU/Linux) iEYEARECAAYFAk05+ssACgkQe+cmRQ8+KPfQnACaAr1YGFoiUmRrmz1/W+eTB8ly 3b0AoInVelg2TYu1J3QpDj3WfO0Ko5zW =vh8b -END PGP SIGNATURE- -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Smooth contourplots
Dear Joe,
finally I had time to come back to my python scritp for the contour plots.
You're code works very nicelly and does exactly what I need.
Thank you for the help
Francesco
2010/7/26 Joe Kington jking...@wisc.edu:
It sounds like you're wanting a gaussian kernel density estimate (KDE) (not
the desktop!). The other options you mentioned are for interpolation, and
are not at all what you're wanting to do.
You can use scipy.stats.kde.gaussian_kde(). However, it currently doesn't
take a weights array, so you'll need to modify it for your use case.
If you prefer, I have faster version of a gaussian KDE that can take a
weights array. It's actually slower than the scipy's gaussian kde for a low
number of points, but for hundreds, thousands, or millions of points, it's
several orders of magnitude faster. (Though the speedup depends on the
covariance of the points... higher covariance = slower, generally speaking)
Here's a quick pastebin of the code. http://pastebin.com/LNdYCZgw
To use it, you do something like the below... (assuming the code in the
pastebin is saved in a file called fast_kde.py)
import numpy as np
import matplotlib.pyplot as plt
from fast_kde import fast_kde
# From your description of your data...
weights, x, y = np.loadtxt('chain.txt', usecols=(0,4,6)).T
kde_grid = fast_kde(x, y, gridsize=(200,200), weights=weights)
# Plot the grid
plt.figure()
plt.imshow(kde_grid, extent=(x.min(), x.max(), y.max(), y.min())
# Reverse the y-axis
plt.gca().invert_yaxis()
plt.show()
Hope that helps a bit,
-Joe
On Sat, Jul 24, 2010 at 3:56 AM, montefra franz.berges...@googlemail.com
wrote:
Hi,
I am writing a program that reads three columns (one column containing the
weights, the other two containing the values I want to plot) from a file
containing the results from a MonteCarlo Markov Chain. The file contains
thousends of lines. Then create the 2D histogram and make contourplots.
Here
is a sample of the code (I don't know if is correct, it's just to show
what
I do)
import numpy as np
import matplotlib.pyplot as mplp
chain = np.loadtxt(chain.txt, usecols=[0,4,6]) #read columns 0
(the
weights), 4 and 6 (the data), from the file chain.txt
h2D, xe, ye = np.histogram2D(chain[:,1],chain[:,2],
weights=chain[:,0])
#create the 2D histogram
x = (xe[:-1] + xe[1:])/2. #x and y values for the plot (I use the mean
of each bin)
y = (ye[:-1] + ye[1:])/2.
mplp.figure() #open the figure
mplp.contourf(x, y, h2D.T, origin='lower') #contour plot
As it is the contours are not smooth and they look not that nice. After
days
of searches I've found three methods and tried, unsuccesfully, to apply
them
1) 2d interpolation: I got segmentation fault (on a quadcore machine
with
8Gb of RAM)
2) Rbf (radial basis functions): I got wrong contours
3) ndimage: it creates spurious features (like secondary peaks parallel to
the direction of the main one)
Before beginning with Python, I used to use IDL to plot, and there is a
function 'smooth' that smooth for you 2D histograms. I haven't found
anything similar for Python.
Does anyone have an idea or suggestion on how to do it?
Thank in advance
Francesco
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