[Matplotlib-users] Fwd: making publication quality plots
Hi Chaitanya (and everyone else),
thanks for some nice advice! The font and legend frame tips worked
quite well.
I would appreciate it if it was possible to remove the legend frame by
default, i.e. in the matplotlibrc file, if possible. In my opinion,
this frame clutters the plot unnecessarily; I rarely see such frames
in publications.
Thanks!
Paul.
Begin forwarded message:
From: Chaitanya Krishna icym...@gmail.com
Date: 3. juni 2009 08.26.07 GMT+02:00
To: Paul Anton Letnes paul.anton.let...@gmail.com
Cc: matplotlib-users@lists.sourceforge.net
Subject: Re: [Matplotlib-users] making publication quality plots
Hi Paul,
Can you try
font.size: 10
legend.fontsize: small [or medium] in your rc file.
Defining the fontsize and then defining the fontsize of the xtick
labels, legend etc with respect to this font size seems to work better
than defining everything by hand.
Switching off the legend frame does seem to save some place. You can
use pylab.legend('your legend').draw_frame(False)
Cheers,
Chaitanya
On Wed, Jun 3, 2009 at 8:11 AM, Paul Anton Letnes
paul.anton.let...@gmail.com wrote:
On 30. mai. 2009, at 13.56, John Hunter wrote:
On Sat, May 30, 2009 at 3:50 AM, Paul Anton Letnes
paul.anton.let...@gmail.com wrote:
Hello again,
I can set the figure size and font size, that all works fine.
However,
the legend is prohibitively large: for a plot 3 inches wide (why
doesn't matplotlib use centimeters or similar?), the legend takes
up
about one third of the plot. This does not look too good...
Please post a complete example. As for inches vs cm, that is my
fault
-- I can't remember if it was for matlab compatibility, or due to
my
provincial ways this side of the pond.
JDH
Hi,
This is my function which does the plotting. The coeffarr is a 2D
array (function uses 7 first columns) with first column being
frequencies, other columns being real/imag part of whatever I'm
plotting.
#
import matplotlib
matplotlib.use('ps')
import pylab
def plot(coeffarr):
'Do the actual plotting.'
nfreqs, ncoeffs = coeffarr.shape
legends = []
for i in range(1, 6, 2): # real part columns
pylab.plot(coeffarr[:,0], coeffarr[:,i], RE_STYLE)
legends.append('l = %i' % int((i + 1) / 2))
pylab.plot(coeffarr[:,0], coeffarr[:,i+1], IM_STYLE)
legends.append('l = %i' % int((i + 1) / 2))
pylab.legend(legends)
pylab.xlabel('Frequency [eV]')
pylab.ylabel('$A_{lm}R^{-l-1}$')
pylab.savefig(PLOTFILE)
My matplotlibrc file is essentially this:
backend : MacOSX # added by paulanto on 16. feb. 08
numerix : numpy # numpy, Numeric or numarray
lines.linewidth : 1.0 # line width in points
font.family : serif
font.size : 10.0
text.usetex : True
axes.linewidth : 1.0 # edge linewidth
legend.fontsize : 10.0
figure.figsize : 3.0, 2.3# figure size in inches
Is this complete enough? If you do the plot, you'll see that the plot
is about one column wide (7 cm-ish) and that the legend is relatively
large. I made similar size plots in Gnuplot before, at font size 10,
but the legend was somehow less dominant.
Also, will it help getting rid of the rectangle?
cheers,
Paul.
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Re: [Matplotlib-users] matplotlib and qtdesigner
When I started using PyQt and matplotlib, I look at these 2 examples: http://eli.thegreenplace.net/2009/01/20/matplotlib-with-pyqt-guis/ http://matplotlib.sourceforge.net/examples/user_interfaces/embedding_in_qt4.html Regards, Christophe -Original Message- From: projetmbc [mailto:projet...@club-internet.fr] Sent: 04 June 2009 16:49 To: Christophe Dupre Cc: matplotlib-users@lists.sourceforge.net Subject: Re: [Matplotlib-users] matplotlib and qtdesigner Christophe Dupre a écrit : I've been developping an application using PyQT and matplotlib for a while now, and instead of coding the GUI, I'd like to make use of QT designer. Hello, I'm interested by your code or simple parts of it wich show intercation between PyQt and matplotilib. Best regards. Another Christophe. No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.339 / Virus Database: 270.12.49/2149 - Release Date: 06/04/09 05:53:00 -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] matplotlib and qtdesigner
That's great, Pierre. Merci. Christophe -Original Message- From: Pierre Raybaut [mailto:cont...@pythonxy.com] Sent: 04 June 2009 18:36 To: matplotlib-users@lists.sourceforge.net Subject: Re: [Matplotlib-users] matplotlib and qtdesigner matplotlib-users-requ...@lists.sourceforge.net a écrit : Message: 3 Date: Thu, 4 Jun 2009 08:01:06 -0500 From: Christophe Dupre christophe.du...@vhayu.com Subject: [Matplotlib-users] matplotlib and qtdesigner To: matplotlib-users@lists.sourceforge.net Message-ID: f7deb60d3092af49a15d683ce069c914028ad...@vhayu-01-ex.atlarge.net Content-Type: text/plain; charset=us-ascii Hello there, This is my first post, so first of all, thanks to the creators/contributors of matplotlib. It's a very nice software. I've been developping an application using PyQT and matplotlib for a while now, and instead of coding the GUI, I'd like to make use of QT designer. Does anyone know how I can add a MPL FigureCanvasQTAgg to a Main Window form in QT designer? Any (simple) example would be great. Thanks, Christophe Hi, Someone asked me the same question on Python(x,y) discussion group (http://pythonxy.googlegroups.com) a few days ago. So I've included a QtDesigner plugin in Python(x,y) matplotlib package. Here is a screenshot: http://pythonxy.googlegroups.com/web/mplplugin.png Here is the source code (it's quite simple actually): http://groups.google.fr/group/pythonxy/web/QtDesigner_Plugins.zip (simply extract this in your site-packages directory) Cheers, Pierre -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.339 / Virus Database: 270.12.49/2149 - Release Date: 06/04/09 05:53:00 -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] changing x axis to y and y axis to x in colorbar Object
Hi All, i try to get a colorbar to work with: if not hasattr(self, 'subplot3'): self.subplot3 = self.figure.add_subplot(111) self.subplot3.grid(True) x,y,z = self.computehistogramm(min,min+self.maxitems) X,Y = meshgrid(x,y) plot = self.subplot3.pcolor(Y,X,z) self.figure.colorbar(plot) but the x and y axis are interchanged, like this: X | | | | | o-Y But i want this: Y | | | | | o-X So how can i change this ? the x and y data also depends on Z, so when i change x--y then i have change z too ? Any hints for me ? As i read in the examples and in the docu this shoul be right, self.subplot3.pcolor(x,y,z) But then my x and y data are wrong assigned to z, so i wrote self.subplot3.pcolor(y,x,z) How to change my code so x and y are right assigned to z and i get this: Y | | | | | o-X regards Markus -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Fwd: making publication quality plots
On Fri, Jun 5, 2009 at 4:56 AM, Paul Anton Letnespaul.anton.let...@gmail.com wrote: Hi Chaitanya (and everyone else), thanks for some nice advice! The font and legend frame tips worked quite well. I would appreciate it if it was possible to remove the legend frame by default, i.e. in the matplotlibrc file, if possible. In my opinion, this frame clutters the plot unnecessarily; I rarely see such frames in publications. I frequently make the frame semi-transparent, though this won't work for EPS leg = ax.legend(...) lege.get_frame().set_alpha(0.5) Some rc default for the legend frame (on/off, alpha) would be useful. JDH -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] consistent colors between imshow and scatter
I have 2 float arrays of the same dimension which I use to generate a 3rd array, again of the same dimension, containing integers from a small set (I obtain the 3rd array via clustering in the 2 dimensional space of points obtained as values from the same location in the initial 2 arrays). I'd like to do a scatter plot using scatter, with x-axis values as values from the first array, y-values as values from the second array and color of the points corresponding to the integer in the 3rd array (so far so good; I can do that much). Then I'd like to plot an image using imshow of the 3rd array with colors corresponding to those in the scatter plot. I can generate the image with imshow ok but can't the colors to match those in the scatter plot. Here's a snippet (assume array1,array2, and array3 are 2D arrays): hot() scatter(array1.ravel(), array2.ravel(), c = numpy.array(array3.ravel(),float)) imshow(array3) show() The main problem is that I can't figure out how to force the plot colors for imshow to correspond to those in scatter. Thanks for any thought or suggestions. Cheers, -- KY -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Setting axis range so it is not rescaled
On Thu, Jun 4, 2009 at 5:33 PM, Sandro Tosi matrixh...@gmail.com wrote: Hi, On Thu, Jun 4, 2009 at 23:26, citronade ricit...@mac.com wrote: I am trying to set the x and y axis range on a log-log plot. The ranges I give are automatically adjusted to the nearest power of 10, but I would like to have the minimum and maximum axis values not be powers of 10. Is there a way to set the axis range so that it is not automatically rescaled? You can turn autoscaling off entirely with ax.set_autoscale_on(False) And then set the xlim/ylim as you like as Sandro suggested. JDH -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] consistent colors between imshow and scatter
On Thu, Jun 4, 2009 at 6:38 PM, Karl Youngkarl.yo...@ucsf.edu wrote: I have 2 float arrays of the same dimension which I use to generate a 3rd array, again of the same dimension, containing integers from a small set (I obtain the 3rd array via clustering in the 2 dimensional space of points obtained as values from the same location in the initial 2 arrays). I'd like to do a scatter plot using scatter, with x-axis values as values from the first array, y-values as values from the second array and color of the points corresponding to the integer in the 3rd array (so far so good; I can do that much). Then I'd like to plot an image using imshow of the 3rd array with colors corresponding to those in the scatter plot. I can generate the image with imshow ok but can't the colors to match those in the scatter plot. Here's a snippet (assume array1,array2, and array3 are 2D arrays): hot() scatter(array1.ravel(), array2.ravel(), c = numpy.array(array3.ravel(),float)) imshow(array3) show() The main problem is that I can't figure out how to force the plot colors for imshow to correspond to those in scatter. Thanks for any thought or suggestions. Cheers, w/o a complete, self contained code sample that we can run and play with on our machines, it is harder to help. Have you tried forcing the clim to be set to the interval you want? http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.clim JDH -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] one data set, two y axis scales
On Thu, Jun 4, 2009 at 12:16 PM, Jae-Joon Leelee.j.j...@gmail.com wrote: I hope the code below gives you some idea. def Tc(Tf): return (5./9.)*(Tf-32) ax1 = subplot(111) # y-axis in F ax2 = twinx() # y-axis in C def update_ax2(ax1): y1, y2 = ax1.get_ylim() ax2.set_ylim(Tc(y1), Tc(y2)) # automatically update ylim of ax2 when ylim of ax1 changes. ax1.callbacks.connect(ylim_changed, update_ax2) ax1.plot([78, 79, 79, 77]) Yes, this is a cute little example. I was thinking along the lines Ryan was, to just plot the same data twice with twinx, but this is cleverer. I added it to svn as: examples/api/fahrenheit_celcius_scales.py But using twinx has always been a hack. I think what we really need is to have each spine have it's own locator, formatter and tick collection (eg the natural points for Celcius ticks are different from the natural points for Fahrenheit ticks) and currently the left and right ticks of an axis share the axis locator and formatter. Currently the spines just draw the lines and the axes/axis handle all the ticks and the locators. It might be more natural to move these into the spine itself, and support independent ticks/locators/formatter for each spine, with the default being shared. Andrew, did you give this any thought in the spine implementation? I am pretty sure it would be hard, but maybe you have a better sense of *how hard*. This would be a nice enhancement. JDH -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Newbie question
Hi, The matplotlib.collections.Collection documentation reads: All properties in a collection must be sequences or scalars; if scalars, they will be converted to sequences. The property of the ith element of the collection is: prop[i % len(props)]. I had a look at the docstring documentation from ipython, but I didn't find out how the above is achieved (I am learning Python together with numpy, matplotlib, etc.). In my own code, how could I do something like this? If you point to a relevant location on the source code, that's alright. I also get confused sometimes because of the multiple (and sometimes interchangeable) ways of specifying arguments: sequences (list, tuples), numpy arrays, etc. I started using almost exclusively numpy arrays (probably due to my matlab background), but I am starting to mix a bit of everything now (depending on what sources of inspiration I use), so I wondered what a good guideline would be. Thanks, Jorge -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Open file dialog?
Alan G Isaac alan.is...@... writes: snip That's all, as long as you don't mind destroying the Window manually. (Otherwise, you need just a couple more lines.) Thanks, I'll give this a try. Jorge -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] consistent colors between imshow and scatter
Thanks for the tip and sorry I didn't include a complete code snippet; the current code involves images (scipy.ndimage) and clustering code and I thought that was a little too much too include; I'll try to extract something simpler. I guess the main question is how to use a set of integers to index a color space consistently for both scatter and imshow but I'll try to come up with a simple example. Thanks agan. From: John Hunter [jdh2...@gmail.com] Sent: Friday, June 05, 2009 5:43 AM To: Young, Karl Cc: matplotlib-users@lists.sourceforge.net Subject: Re: [Matplotlib-users] consistent colors between imshow and scatter On Thu, Jun 4, 2009 at 6:38 PM, Karl Youngkarl.yo...@ucsf.edu wrote: I have 2 float arrays of the same dimension which I use to generate a 3rd array, again of the same dimension, containing integers from a small set (I obtain the 3rd array via clustering in the 2 dimensional space of points obtained as values from the same location in the initial 2 arrays). I'd like to do a scatter plot using scatter, with x-axis values as values from the first array, y-values as values from the second array and color of the points corresponding to the integer in the 3rd array (so far so good; I can do that much). Then I'd like to plot an image using imshow of the 3rd array with colors corresponding to those in the scatter plot. I can generate the image with imshow ok but can't the colors to match those in the scatter plot. Here's a snippet (assume array1,array2, and array3 are 2D arrays): hot() scatter(array1.ravel(), array2.ravel(), c = numpy.array(array3.ravel(),float)) imshow(array3) show() The main problem is that I can't figure out how to force the plot colors for imshow to correspond to those in scatter. Thanks for any thought or suggestions. Cheers, w/o a complete, self contained code sample that we can run and play with on our machines, it is harder to help. Have you tried forcing the clim to be set to the interval you want? http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.clim JDH -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] one data set, two y axis scales
John Hunter wrote: On Thu, Jun 4, 2009 at 12:16 PM, Jae-Joon Leelee.j.j...@gmail.com wrote: I hope the code below gives you some idea. def Tc(Tf): return (5./9.)*(Tf-32) ax1 = subplot(111) # y-axis in F ax2 = twinx() # y-axis in C def update_ax2(ax1): y1, y2 = ax1.get_ylim() ax2.set_ylim(Tc(y1), Tc(y2)) # automatically update ylim of ax2 when ylim of ax1 changes. ax1.callbacks.connect(ylim_changed, update_ax2) ax1.plot([78, 79, 79, 77]) Yes, this is a cute little example. I was thinking along the lines Ryan was, to just plot the same data twice with twinx, but this is cleverer. I added it to svn as: examples/api/fahrenheit_celcius_scales.py But using twinx has always been a hack. I think what we really need is to have each spine have it's own locator, formatter and tick collection (eg the natural points for Celcius ticks are different from the natural points for Fahrenheit ticks) and currently the left and right ticks of an axis share the axis locator and formatter. Currently the spines just draw the lines and the axes/axis handle all the ticks and the locators. It might be more natural to move these into the spine itself, and support independent ticks/locators/formatter for each spine, with the default being shared. Andrew, did you give this any thought in the spine implementation? I am pretty sure it would be hard, but maybe you have a better sense of *how hard*. This would be a nice enhancement. I think this would be a good direction, as well. It would also allow disabling the tick mark labels in some axes that share the same axis -- because the ticks/labels would belong to the spine, which itself wouldn't (necessarily) be shared. I can't promise anything, but this may be a solution to the issues that Jae-Joon pointed out w.r.t loglog plots in the spine implementation (although I suspect they are more general). I'll take a look at it, although I can't say exactly when I'll do so -- hopefully within the coming week. -Andrew -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] one data set, two y axis scales
On Fri, Jun 5, 2009 at 11:44 AM, Andrew Strawstraw...@astraw.com wrote: I think this would be a good direction, as well. It would also allow disabling the tick mark labels in some axes that share the same axis -- because the ticks/labels would belong to the spine, which itself wouldn't (necessarily) be shared. I can't promise anything, but this may be a solution to the issues that Jae-Joon pointed out w.r.t loglog plots in the spine implementation (although I suspect they are more general). I'll take a look at it, although I can't say exactly when I'll do so -- hopefully within the coming week. If you go this route, you may want to look at abolishing the Tick class entirely -- once the ticks are associated with a spine, we will not need the tick1line, tick2line, label1, label2 instances. We can draw all the ticks along a given spine with a single Line2D object using the marker styles TICKLEFT, TICKRIGHT, TICKUP, and TICKDOWN. We really do not need heterogeneous properties along a given spine, so we are paying a lot to have separate artist instances for each of these things. The tick labels will be a little harder since Text is so complicated, so you might want to punt at the outset and just have the spine hold a list of Text instances, and down the road we can think about a more efficient text collection if necessary. Thinking out loud But for nonlinear coordinate systems, where ticks may be oriented in different directions, the single Line2D idea may not work so tread cautiously -- perhaps a line collection for the tick lines I am willing to have some breakage in support of this, though we can try to make the top level axes methods accessor (e get_xticklabels) do the intuitive thing. JDH -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] changing x axis to y and y axis to x in colorbar Object
Markus Feldmann wrote: Hi All, i try to get a colorbar to work with: if not hasattr(self, 'subplot3'): self.subplot3 = self.figure.add_subplot(111) self.subplot3.grid(True) x,y,z = self.computehistogramm(min,min+self.maxitems) X,Y = meshgrid(x,y) plot = self.subplot3.pcolor(Y,X,z) self.figure.colorbar(plot) but the x and y axis are interchanged, like this: X | | | | | o-Y But i want this: Y | | | | | o-X So how can i change this ? the x and y data also depends on Z, so when i change x--y then i have change z too ? I don't understand what your question has to do with the colorbar; but in anything like pcolor, if you swap X and Y, then at the same time you need to transpose Z. http://matplotlib.sourceforge.net/api/pyplot_api.html#axes-pcolor-grid-orientation Eric Any hints for me ? As i read in the examples and in the docu this shoul be right, self.subplot3.pcolor(x,y,z) But then my x and y data are wrong assigned to z, so i wrote self.subplot3.pcolor(y,x,z) How to change my code so x and y are right assigned to z and i get this: Y | | | | | o-X regards Markus -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] consistent colors between imshow and scatter
Young, Karl wrote: Thanks for the tip and sorry I didn't include a complete code snippet; the current code involves images (scipy.ndimage) and clustering code and I thought that was a little too much too include; I'll try to extract something simpler. I guess the main question is how to use a set of integers to index a color space consistently for both scatter and imshow but I'll try to come up with a simple example. Thanks agan. Karl, It sounds like you need to specify the norm=colors.NoNorm() argument. http://matplotlib.sourceforge.net/api/colors_api.html?highlight=nonorm#matplotlib.colors.NoNorm Then if your data are integers (typed as integers, not just taking integer values), they will be interpreted as indices into the color table. You will probably also want to generate that table yourself and specify it via the cmap=my_cmap kwarg. If you have only a few values, then you may want to generate it as a colors.ListedColormap: http://matplotlib.sourceforge.net/api/colors_api.html?highlight=listedcolormap#matplotlib.colors.ListedColormap http://matplotlib.sourceforge.net/examples/api/colorbar_only.html?highlight=listedcolormap It looks like we don't have any good examples sitting around showing the use of NoNorm; but try it anyway. Eric -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] consistent colors between imshow and scatter
Hi Eric, Thanks much - I'll try that. From: Eric Firing [efir...@hawaii.edu] Sent: Friday, June 05, 2009 10:43 AM To: Young, Karl Cc: John Hunter; matplotlib-users@lists.sourceforge.net Subject: Re: [Matplotlib-users] consistent colors between imshow and scatter Young, Karl wrote: Thanks for the tip and sorry I didn't include a complete code snippet; the current code involves images (scipy.ndimage) and clustering code and I thought that was a little too much too include; I'll try to extract something simpler. I guess the main question is how to use a set of integers to index a color space consistently for both scatter and imshow but I'll try to come up with a simple example. Thanks agan. Karl, It sounds like you need to specify the norm=colors.NoNorm() argument. http://matplotlib.sourceforge.net/api/colors_api.html?highlight=nonorm#matplotlib.colors.NoNorm Then if your data are integers (typed as integers, not just taking integer values), they will be interpreted as indices into the color table. You will probably also want to generate that table yourself and specify it via the cmap=my_cmap kwarg. If you have only a few values, then you may want to generate it as a colors.ListedColormap: http://matplotlib.sourceforge.net/api/colors_api.html?highlight=listedcolormap#matplotlib.colors.ListedColormap http://matplotlib.sourceforge.net/examples/api/colorbar_only.html?highlight=listedcolormap It looks like we don't have any good examples sitting around showing the use of NoNorm; but try it anyway. Eric -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] xlabel in two lines and centered
Hi,
A quick (probably easy) question: how do you do a label in two lines and
with both lines centered?
xlabel('first line \n second line') don't center both :(
best,
-Yva.
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Re: [Matplotlib-users] xlabel in two lines and centered
On Fri, Jun 5, 2009 at 2:32 PM, Yves-Alexandre yvesalexan...@hotmail.comwrote:
Hi,
A quick (probably easy) question: how do you do a label in two lines and
with both lines centered?
xlabel('first line \n second line') don't center both :(
Try removing the spaces, that makes it look good for me:
xlabel('first line\nsecond line')
Ryan
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Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma
Sent from Norman, Oklahoma, United States
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Re: [Matplotlib-users] xlabel in two lines and centered
Hi,
I sometimes create matplotlib plots without any labels on them -figures
only. Then I add appropriate titles and/or labels using either MS Word or OO
Writer.
A few times used GIMP too to add additional texts. When I can't easily
figure out things in matplotlib this method turns out helpful to accomplish
the task.
Gökhan
On Fri, Jun 5, 2009 at 2:32 PM, Yves-Alexandre yvesalexan...@hotmail.comwrote:
Hi,
A quick (probably easy) question: how do you do a label in two lines and
with both lines centered?
xlabel('first line \n second line') don't center both :(
best,
-Yva.
--
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looking to deploy the next generation of Solaris that includes the latest
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Re: [Matplotlib-users] consistent colors between imshow and scatter
hmmm... in response to John's earlier request I cobbled a simple example but that seems to work; either there's a strange error in the more complex version or my misunderstanding of color maps is messing with me. Anyway, for the record, here's an example of what I want to do (that actually seems to work) #!/usr/bin/env python # Example to try and use same color maps for scatter and imshow import numpy as np from pylab import * # size of array dimensions size = 10 # cluster centers acenter1 = 3.0 asigma1 = 1.0 bcenter1 = 6.0 bsigma1 = 0.5 acenter2 = 8.0 asigma2 = 2.0 bcenter2 = 3.0 bsigma2 = 1.0 acenter3 = 13.0 asigma3 = 2.0 bcenter3 = 10.0 bsigma3 = 1.0 # populate arrays with random values distrubted about 2 locations # (i.e. 2 clusters) a = np.zeros([size,size],float) b = np.zeros([size,size],float) c = np.zeros([size,size],int) # populate arrays for i in range(size): for j in range(size): switcher = np.random.randint(3) if switcher == 0: # cluster 1 a[i,j] = np.random.normal(acenter1,asigma1) b[i,j] = np.random.normal(bcenter1,bsigma1) c[i,j] = 0 elif switcher == 1 : # cluster 2 a[i,j] = np.random.normal(acenter2,asigma2) b[i,j] = np.random.normal(bcenter2,bsigma2) c[i,j] = 1 else: a[i,j] = np.random.normal(acenter3,asigma3) b[i,j] = np.random.normal(bcenter3,bsigma3) c[i,j] = 2 hot() subplot(1,2,1) scatter(np.ravel(a),np.ravel(b),c=np.ravel(c)) subplot(1,2,2) imshow(c) show() Young, Karl wrote: Thanks for the tip and sorry I didn't include a complete code snippet; the current code involves images (scipy.ndimage) and clustering code and I thought that was a little too much too include; I'll try to extract something simpler. I guess the main question is how to use a set of integers to index a color space consistently for both scatter and imshow but I'll try to come up with a simple example. Thanks agan. Karl, It sounds like you need to specify the norm=colors.NoNorm() argument. http://matplotlib.sourceforge.net/api/colors_api.html?highlight=nonorm#matplotlib.colors.NoNorm Then if your data are integers (typed as integers, not just taking integer values), they will be interpreted as indices into the color table. You will probably also want to generate that table yourself and specify it via the cmap=my_cmap kwarg. If you have only a few values, then you may want to generate it as a colors.ListedColormap: http://matplotlib.sourceforge.net/api/colors_api.html?highlight=listedcolormap#matplotlib.colors.ListedColormap http://matplotlib.sourceforge.net/examples/api/colorbar_only.html?highlight=listedcolormap It looks like we don't have any good examples sitting around showing the use of NoNorm; but try it anyway. Eric . -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] one data set, two y axis scales
John, These ideas have been part of motivation behind my axes_grid toolkit. In the module documentation of lib/mpl_toolkits/axes_grid/axislines.py, I tried to briefly explain what I wanted and what I implemented, although the explanation is very far from complete (also some examples are found in http://matplotlib.sourceforge.net/mpl_toolkits/axes_grid/users/overview.html#axisline ). Note that my ultimate goal was to support the curvelinear coordinate system, as demonstrated in my recent example (examples/axes_grid/demo_curvelinear_grid.py). And my hope is that, if we're going to this direction and somehow expand the spines to support these ideas, please make it possible to customize and expand although only the basic features are supported by the vanilla mpl. For example, in curvelinear coordinate, ticks can have arbitrary angles, so I hope that the tickstyles are not strictly limited to [TICKLEFT, TICKRIGHT, TICKUP, TICKDOWN] by design. It would be great if there is a chance to discuss about the overall design before implementing something in this regard. My current implementation in axes_grid toolkit became rather complicated, and some of them are implemented in quick and dirty ways. However, I guess it would be helpful to go over how thing are currently implemented in axes_grid toolkit and further discuss how we're going to do this within the mpl. I'll try to write up short documentation about my design during this weekend. Regards, -JJ On Fri, Jun 5, 2009 at 1:07 PM, John Hunterjdh2...@gmail.com wrote: On Fri, Jun 5, 2009 at 11:44 AM, Andrew Strawstraw...@astraw.com wrote: I think this would be a good direction, as well. It would also allow disabling the tick mark labels in some axes that share the same axis -- because the ticks/labels would belong to the spine, which itself wouldn't (necessarily) be shared. I can't promise anything, but this may be a solution to the issues that Jae-Joon pointed out w.r.t loglog plots in the spine implementation (although I suspect they are more general). I'll take a look at it, although I can't say exactly when I'll do so -- hopefully within the coming week. If you go this route, you may want to look at abolishing the Tick class entirely -- once the ticks are associated with a spine, we will not need the tick1line, tick2line, label1, label2 instances. We can draw all the ticks along a given spine with a single Line2D object using the marker styles TICKLEFT, TICKRIGHT, TICKUP, and TICKDOWN. We really do not need heterogeneous properties along a given spine, so we are paying a lot to have separate artist instances for each of these things. The tick labels will be a little harder since Text is so complicated, so you might want to punt at the outset and just have the spine hold a list of Text instances, and down the road we can think about a more efficient text collection if necessary. Thinking out loud But for nonlinear coordinate systems, where ticks may be oriented in different directions, the single Line2D idea may not work so tread cautiously -- perhaps a line collection for the tick lines I am willing to have some breakage in support of this, though we can try to make the top level axes methods accessor (e get_xticklabels) do the intuitive thing. JDH -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
