[Matplotlib-users] Help plotting dates
Hello, I'm finding it a little difficult to make a plot with dates: I have an array with 2 columns. The first one is seconds since a certain date (let's say 8th September, 8:00am). The second one is the variable I want to plot. The series spans several months so I want to have the major ticks be months (and have the name of the month printed below) and the minor ticks be days. I'm sure this is very easy to plot but I don't know how to, any help? Armando. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] download
I just went in and changed the default file downloads back to correct values, but alas, it appears to have no effect. There is some hints in the (many) related SF bugs that there may be a delay associated with these settings, so I will check back again at the end of the day. Mike On 09/04/2009 05:46 AM, Fabrice Silva wrote: Le jeudi 03 septembre 2009 à 20:16 -0500, John Hunter a écrit : On Thu, Sep 3, 2009 at 8:04 PM, Alan G Isaacalan.is...@gmail.com wrote: The default download from the Matplotlib page link to http://sourceforge.net/projects/matplotlib/ which once again highlights basemap. (I think this was fixed at one point.) I'm not seeng this, nor am I seeing basemap settings in the File Manager which would trigger this. Of course, the default download is platform specific, which may be why I am not seeing this, so please give us as much info as possible about your platform (mainly the OS) When I click on the green download button at http://sourceforge.net/projects/matplotlib using mac OSX 10.5, I get redirected to the mpl 0.99 OSX download:: https://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-0.99/matplotlib-0.99.0-py2.5-macosx10.5.dmg/download Strangely, the green button points to http://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-0.99/matplotlib-0.99.0-py2.5-macosx-10.3-i386.egg/download when I browse on a linux (debian) machine with epiphany (which uses gecko, the firefox engine). Why macosx ? -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] grid on log-plots
thanks Sebastian,
you are right, your code works here too. But i don't get it work in my
multi y-axes plot from the matplotlib examples
(http://matplotlib.sourceforge.net/examples/axes_grid/demo_parasite_axes.html).
Even with linear plots, i get no gridlines.
Any idea, whats wrong here?
minimal code example:
###
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid.parasite_axes import HostAxes, ParasiteAxes
fig = plt.figure(1)
fig.clf()
#plt.grid(True)
host = HostAxes(fig, [0.15, 0.1, 0.65, 0.8])
fig.add_axes(host)
host.plot([0, 10, 100], [0, 10, 100], label='host')
host.grid(True) #?
host.yaxis.grid(True) #?
host.yaxis.set_scale('log') #?
plt.draw()
plt.show()
###
Greets,
Andreas
Sebastian Busch schrieb:
from matplotlib.pyplot import *
plot([1,10,100],[1,10,100])
grid()
yscale('log')
xscale('log')
works here.
best,
sebastian.
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Re: [Matplotlib-users] Help plotting dates
On Tue, Sep 8, 2009 at 7:45 AM, Armando Serrano Lombillo arser...@gmail.com wrote: Hello, I'm finding it a little difficult to make a plot with dates: I have an array with 2 columns. The first one is seconds since a certain date (let's say 8th September, 8:00am). The second one is the variable I want to plot. The series spans several months so I want to have the major ticks be months (and have the name of the month printed below) and the minor ticks be days. I'm sure this is very easy to plot but I don't know how to, any help? Armando. Hello, You can experiment with the following lines to re-arrange your ticks. current_axis = gca() current_axis.xaxis.set_major_formatter() Similarly set_minor_formatter for x and y axes. See these links too http://matplotlib.sourceforge.net/api/dates_api.html http://matplotlib.sourceforge.net/examples/api/date_index_formatter.html -- Gökhan -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] grid on log-plots
This is a bug in the axes_grid toolkit. As a matter of fact, gridlines
in rectlinear coordinate are not implemented yet.
Unfortunately, I don't see any easy workarounds.
You may use mpl's original axis artists, but some of the functionality
of axes_grid toolkit may be lost.
host.toggle_axisline(False)
host.yaxis.set_ticks_position(left)
host.yaxis.grid()
host.set_yscale(log)
With new spine support in mpl, I think a similar plot can be drawn
without using axes_grid toolkit.
Regards,
-JJ
On Mon, Sep 7, 2009 at 4:37 PM, Andreas Frommanfr...@gmx.de wrote:
thanks Sebastian,
you are right, your code works here too. But i don't get it work in my
multi y-axes plot from the matplotlib examples
(http://matplotlib.sourceforge.net/examples/axes_grid/demo_parasite_axes.html).
Even with linear plots, i get no gridlines.
Any idea, whats wrong here?
minimal code example:
###
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid.parasite_axes import HostAxes, ParasiteAxes
fig = plt.figure(1)
fig.clf()
#plt.grid(True)
host = HostAxes(fig, [0.15, 0.1, 0.65, 0.8])
fig.add_axes(host)
host.plot([0, 10, 100], [0, 10, 100], label='host')
host.grid(True) #?
host.yaxis.grid(True) #?
host.yaxis.set_scale('log') #?
plt.draw()
plt.show()
###
Greets,
Andreas
Sebastian Busch schrieb:
from matplotlib.pyplot import *
plot([1,10,100],[1,10,100])
grid()
yscale('log')
xscale('log')
works here.
best,
sebastian.
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[Matplotlib-users] creating mesh data from xyz data
Hi list, I have some files with data stored in columns: x1 y1 z1 x2 y2 z2 x3 y3 z3 x4 y4 z4 x5 y5 z5 ... and I need to make a contour plot of this data using matplotlib. The problem is that contour plot functions usually handle a different kind of input: X=[[x1,x2,x3,x4,x5,x6], [x1,x2,x3,x4,x5,x6], [x1,x2,x3,x4,x5,x6],... Y=[[y1,y1,y1,y1,y1,y1], [y2,y2,y2,y2,y2,y2], [y3,y3,y3,y3,y3,y3],. Z=[[z1,z2,z3,z4,z5,z6], [z7,z8,zz9,z10,z11,z12], I usually load data using 3 lists: x, y and z; I wonder if there is any function which is able to take these 3 lists and return the right input for matplotlib functions. cheers g -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] trouble installing on Vista 64-bit
Hi, I am running Windows Vista 64-bit and have installed matplotlib from http://sourceforge.net/projects/matplotlib/ via the Download Now!. I currently have Numpy version 1.3.0 installed in the same location as matplotlib (C:\Python26\Lib\site-packages\). I have tried importing matplotlib, for example import matplotlib.pyplotlike in the documented examples and unfortunately this does not work for me. I have searched in site-packages, and elsewhere, for files/directories on my computer named matplotlit or pyplot and found no hits. I have even reinstalled matplot lib and still have the same problems. Has anyone else experienced this problem? -Nathan -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] grid on log-plots
On Tue, Sep 8, 2009 at 11:51 AM, Yann
Goudardmatplotlib-us...@alleeduweb.eu wrote:
Hi,
I have the same behaviour with LocatableAxes. HostAxes, ParasiteAxes and
LocatableAxes depend on 'mpl_toolkits.axes_grid.axislines.Axes'. It must
be the matter origin.
Yes, and this was because I forgot to implement some necessary methods.
This is now fixed in the svn trunk. So if you can,please give it a try.
This another example should draw a grid but does not:
import wx
from wx import Frame
from matplotlib.backends.backend_wxagg import FigureFrameWxAgg,
FigureCanvasWxAgg
from matplotlib.figure import Figure
from mpl_toolkits.axes_grid.axes_divider import LocatableAxes
fig = Figure((1, 1), 50)
axes = LocatableAxes(fig, [0, 0, 1, 1])
# axes.toggle_axisline(False)
axes.grid(True)
fig.add_axes(axes)
app = wx.PySimpleApp()
my_viewer = FigureFrameWxAgg(-1, fig)
my_viewer.Show()
app.MainLoop()
If you uncomment axes.toggle_axisline(False), it works cause it uses
normal 'matplolib.axes.Axes' behaviour. It is not a matter for common
use but if you need 'AxesZero', this trick does not work.
What the toggle_axisline does is simply to make the xaxis and yaxis
(which are responsible for drawing ticks, ticklabels, etc in the
mainline mpl) visible again, and make axis[bottom] and etc
invisible.
One workaround is to make xaxis and yaxis visible but pnly to draw the
gridlines. Something like below.
ax.toggle_axisline(True)
ax.grid(True)
ax.gridlines.set_visible(False) # this is just to make the code not to
draw gridlines twice in future release of mpl.
ax.xaxis.set_visible(True)
ax.yaxis.set_visible(True)
for t in ax.xaxis.majorTicks + ax.yaxis.majorTicks:
t.gridOn = True
t.tick1On = False
t.tick2On = False
t.label1On = False
t.label2On = False
Let me know if this does not work, or there is a case that this cannot be used.
Regards,
-JJ
Yann
On 09/07/2009 10:37 PM, Andreas Fromm wrote:
thanks Sebastian,
you are right, your code works here too. But i don't get it work in my
multi y-axes plot from the matplotlib examples
(http://matplotlib.sourceforge.net/examples/axes_grid/demo_parasite_axes.html).
Even with linear plots, i get no gridlines.
Any idea, whats wrong here?
minimal code example:
###
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid.parasite_axes import HostAxes, ParasiteAxes
fig = plt.figure(1)
fig.clf()
#plt.grid(True)
host = HostAxes(fig, [0.15, 0.1, 0.65, 0.8])
fig.add_axes(host)
host.plot([0, 10, 100], [0, 10, 100], label='host')
host.grid(True) #?
host.yaxis.grid(True) #?
host.yaxis.set_scale('log') #?
plt.draw()
plt.show()
###
Greets,
Andreas
Sebastian Busch schrieb:
from matplotlib.pyplot import *
plot([1,10,100],[1,10,100])
grid()
yscale('log')
xscale('log')
works here.
best,
sebastian.
--
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Re: [Matplotlib-users] trouble installing on Vista 64-bit
On 9/8/2009 1:39 PM, Watson, Nathaniel wrote: I am running Windows Vista 64-bit and have installed matplotlib from http://sourceforge.net/projects/matplotlib/ via the Download Now!. What is the name of the file you downloaded? Alan Isaac -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
