Re: [Matplotlib-users] how to make a polar plot just of a section with grid
Hi Frederick, thanks for your answer. The option *faceted* I already knew but this is not exactly what I want. Perhaps it would be possible to draw the grid without labels. My goal is to draw a grid with labels above the data. Similar to the example 'demo curvelinear grid'. Regards Stefan -- Nokia and ATT present the 2010 Calling All Innovators-North America contest Create new apps games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] range in the colorbar
Hi, I am generating a scatter plot with a colorbar, and want to pass on the colorbar to some function to do something with it, like plt.scatter(px, py, c=pz, ...) cb = plt.colorbar() foo(cb) My question: How can I extract the range of the colorbar from the cb object? The colorbar extends from min(pz) to max(pz), but can I access these values from the cb object alone, without the need to pass pz to foo as well? Thanks Alex -- Nokia and ATT present the 2010 Calling All Innovators-North America contest Create new apps games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] installation question
Friends, I am using mpl in fedora10. I installed mpl (version 0.98.5.2) with yum previously. Since yum does not upgrade to latest mpl version, i have downloaded the tarball to install from the source. Now i want to install mpl in the same location as previously done by yum (info. given below). 1) How can force the installation to the same location as done by yum. 2) Will there be anyproblem if i overwrite old one with new installation. import matplotlib matplotlib.__version__ '0.98.5.2' matplotlib.__file__ '/usr/lib/python2.5/site-packages/matplotlib/__init__.pyc' Thank you, Bala -- Nokia and ATT present the 2010 Calling All Innovators-North America contest Create new apps games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] installation question
Hi Bala, Strange that yum did not updated, Fedora does has the latest version packaged: http://koji.fedoraproject.org/koji/packageinfo?packageID=3607 Maybe you can try to force the installation of the latest rpm by downloading it and installing it with yum. * Filipe Pires Alvarenga Fernandes, PhD Candidate School of Marine Science and Technology University of Massachusetts at Dartmouth 706 Rodney French Blvd., New Bedford, MA 02744 Email: falvarengafernan...@umassd.edu ocef...@gmail.com http://ocefpaf.tiddlyspot.com/ * On Thu, Oct 21, 2010 at 06:46, Bala subramanian bala.biophys...@gmail.com wrote: Friends, I am using mpl in fedora10. I installed mpl (version 0.98.5.2) with yum previously. Since yum does not upgrade to latest mpl version, i have downloaded the tarball to install from the source. Now i want to install mpl in the same location as previously done by yum (info. given below). 1) How can force the installation to the same location as done by yum. 2) Will there be anyproblem if i overwrite old one with new installation. import matplotlib matplotlib.__version__ '0.98.5.2' matplotlib.__file__ '/usr/lib/python2.5/site-packages/matplotlib/__init__.pyc' Thank you, Bala -- Nokia and ATT present the 2010 Calling All Innovators-North America contest Create new apps games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Nokia and ATT present the 2010 Calling All Innovators-North America contest Create new apps games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Changing the axis that colour changes with in surface plots
Hi everybody, I have been using the plot_surface function to create excellent 3d surface plots. However, the colour scales with the z axis, and I cannot find any way to change this. Specifically, I am interested in making the colour change with distance from the origin - in other words, so that it scales with (x^2+y^2+z^2)^1/2. Is there any way of doing this in matplotlib? Thanks, Matt -- View this message in context: http://old.nabble.com/Changing-the-axis-that-colour-changes-with-in-surface-plots-tp30018631p30018631.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- Nokia and ATT present the 2010 Calling All Innovators-North America contest Create new apps games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] how to make a polar plot just of a section with grid
2010/10/21 Stefan Mauerberger stefan.mauerber...@mnet-online.de: My goal is to draw a grid with labels above the data. Similar to the example 'demo curvelinear grid'. Ok, I think I cannot give you an authoritative response here, but the following might be useful for the labels: http://matplotlib.sourceforge.net/api/axes_api.html#matplotlib.axes.Axes.text From first glimple, I don't understand http://matplotlib.sourceforge.net/examples/axes_grid/demo_curvelinear_grid.html either. It assumes a lot of knowledge of the techniques used imo. As a conclusion, I predict that this plot can easily grow to middle complexity, and that it might be worth using PolarAxes with grid turned off, and maybe save it as svg and remove the circle or sth like that. AFAIK, lines in PolarAxes are automatically bended, so the grid shouln't be a problem (you may use some pcolor function with nans in the values, so that only the grid is drawn) You can override the PolarAxes locator and ticklabels. Friedrich -- Nokia and ATT present the 2010 Calling All Innovators-North America contest Create new apps games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Plot Minor Tweaking
Dear All,
Please consider the snippet at the end of the email.
Admittedly, I am still quite cumbersome with the matplotlib pipeline (I
am a bit unsure about how to manipulate objects and their properties).
The snippet below produces two plots. I have some questions
(1) for both plots: how do I add some text to the plot(possibly in
latex) in a specified position and fine-tune its properties (size, bold
etc...)?
(2) Last generated plot: I would like to have arrows like in the
previous plot, just rotated by 90 degrees so that they hit the red areas
at the north and south poles. However, this does not look possible right
now without shortening the arrows (there is not enough vertical space;
somehow the whole aspect ratio of the plot+boundary is not 1). Any
suggestions about how to fix this?
Many thanks
Lorenzo
33
#!/usr/bin/env python
See pcolor_demo2 for a much faster way of generating pcolor plots
from __future__ import division
from pylab import *
def func3(x,y):
return (1- x/2 + x**5 + y**3)*exp(-x**2-y**2)
def func4(x,y):
theta=arcsin(y)
return cos(theta)
def func5(x,y):
return abs(sin(y))
def func6(x,y):
return abs(cos(y))
# make these smaller to increase the resolution
dx, dy = 0.05, 0.05
# x = arange(-1.0, 1.0, dx)
# y = arange(-1.0, 1.0, dy)
x = arange(-pi/2., pi/2., dx)
y = arange(-pi/2., pi/2., dy)
X,Y = meshgrid(x, y)
Z = func6(X, Y)
# print Z is, , Z
ini=pi/2.+0.5
ax = subplot(111)
ax.axis('off')
im = imshow(Z,cmap=cm.jet, extent=(-pi/2., pi/2., -pi/2., pi/2.))
im.set_interpolation('bilinear')
im.set_clip_path(Circle((0,0),pi/2., transform=ax.transData))
annotate(, xy=(-pi/2., 0), xytext=(-ini, 0), arrowprops=dict(fc=g))
annotate(, xy=(-pi/2., .2), xytext=(-ini, .2), arrowprops=dict(fc=g))
annotate(, xy=(-pi/2., -.2), xytext=(-ini, -.2), arrowprops=dict(fc=g))
annotate(, xy=(-pi/2., .4), xytext=(-ini, .4), arrowprops=dict(fc=g))
annotate(, xy=(-pi/2., -.4), xytext=(-ini, -.4), arrowprops=dict(fc=g))
annotate(, xy=(-pi/2., .6), xytext=(-ini, .6), arrowprops=dict(fc=g))
annotate(, xy=(-pi/2., -.6), xytext=(-ini, -.6), arrowprops=dict(fc=g))
annotate(, xy=(-pi/2., .8), xytext=(-ini, .8), arrowprops=dict(fc=g))
annotate(, xy=(-pi/2., -.8), xytext=(-ini, -.8), arrowprops=dict(fc=g))
annotate(, xy=(-pi/2., 1), xytext=(-ini, 1), arrowprops=dict(fc=g))
annotate(, xy=(-pi/2., -1), xytext=(-ini, -1), arrowprops=dict(fc=g))
annotate(, xy=(-pi/2., 1.2), xytext=(-ini, 1.2), arrowprops=dict(fc=g))
annotate(, xy=(-pi/2., -1.2), xytext=(-ini, -1.2),
arrowprops=dict(fc=g))
annotate(, xy=(-pi/2., 1.4), xytext=(-ini, 1.4), arrowprops=dict(fc=g))
annotate(, xy=(-pi/2., -1.4), xytext=(-ini, -1.4),
arrowprops=dict(fc=g))
annotate(, xy=(pi/2., 0), xytext=(ini, 0), arrowprops=dict(fc=g))
annotate(, xy=(pi/2., .2), xytext=(ini, .2), arrowprops=dict(fc=g))
annotate(, xy=(pi/2., -.2), xytext=(ini, -.2), arrowprops=dict(fc=g))
annotate(, xy=(pi/2., .4), xytext=(ini, .4), arrowprops=dict(fc=g))
annotate(, xy=(pi/2., -.4), xytext=(ini, -.4), arrowprops=dict(fc=g))
annotate(, xy=(pi/2., .6), xytext=(ini, .6), arrowprops=dict(fc=g))
annotate(, xy=(pi/2., -.6), xytext=(ini, -.6), arrowprops=dict(fc=g))
annotate(, xy=(pi/2., .8), xytext=(ini, .8), arrowprops=dict(fc=g))
annotate(, xy=(pi/2., -.8), xytext=(ini, -.8), arrowprops=dict(fc=g))
annotate(, xy=(pi/2., 1), xytext=(ini, 1), arrowprops=dict(fc=g))
annotate(, xy=(pi/2., -1), xytext=(ini, -1), arrowprops=dict(fc=g))
annotate(, xy=(pi/2., 1.2), xytext=(ini, 1.2), arrowprops=dict(fc=g))
annotate(, xy=(pi/2., -1.2), xytext=(ini, -1.2), arrowprops=dict(fc=g))
annotate(, xy=(pi/2., 1.4), xytext=(ini, 1.4), arrowprops=dict(fc=g))
annotate(, xy=(pi/2., -1.4), xytext=(ini, -1.4), arrowprops=dict(fc=g))
savefig(first-plot.pdf)
clf()
Z = func5(X, Y)
ax = subplot(111,aspect='equal')
ax.axis('off')
im = imshow(Z,cmap=cm.jet, extent=(-pi/2., pi/2., -pi/2., pi/2.))
im.set_interpolation('bilinear')
im.set_clip_path(Circle((0,0),pi/2., transform=ax.transData))
annotate(, xy=(pi/2., 0), xytext=(ini, 0), arrowprops=dict(fc=g))
annotate(, xy=(0., -1.6), xytext=(ini, 0), arrowprops=dict(fc=g))
savefig(second-plot.pdf)
clf()
--
Nokia and ATT present the 2010 Calling All Innovators-North America contest
Create new apps games for the Nokia N8 for consumers in U.S. and Canada
$10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing
Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store
http://p.sf.net/sfu/nokia-dev2dev
___
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] range in the colorbar
On 10/20/2010 11:41 PM, Alexander Dietz wrote: Hi, I am generating a scatter plot with a colorbar, and want to pass on the colorbar to some function to do something with it, like plt.scatter(px, py, c=pz, ...) cb = plt.colorbar() foo(cb) My question: How can I extract the range of the colorbar from the cb object? The colorbar extends from min(pz) to max(pz), but can I access these values from the cb object alone, without the need to pass pz to foo as well? cb.norm.vmin cb.norm.vmax Or you can get the same thing from the collection returned by scatter: col = scatter(...) col.norm.vmin col.norm.vmax The colorbar uses the norm and colormap from the current image (or more generally, the color-mappable object), which in this case is the collection generated by scatter(). Eric Thanks Alex -- Nokia and ATT present the 2010 Calling All Innovators-North America contest Create new apps games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Nokia and ATT present the 2010 Calling All Innovators-North America contest Create new apps games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] merge two axes
Suppose I have two functions returning axes: def f1(): f = plt.figure() ax = f.add_axes(111) ax.plot() ax.lengend() return ax def f2(): similar to f1 now I have a figure main_fig = plt.fig() I want to merge axes from f1 and f2 in a unique axes (withou splitting the figure). For example if f1 produces a line and f2 produces another line I want to see two lines in the same plot at the end. -- Nokia and ATT present the 2010 Calling All Innovators-North America contest Create new apps games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
