Re: [Matplotlib-users] ginput(0) termination error
Bump - no one knows a solution/workaround to this? Hello list; I'm new to python/matplotlib, migrating from IDL. I need to do some interactive point selection with mouse, and the pyplot.ginput() routine seemed to be just the right thing here. I do however need to be able to make a not previously specified number of clicks, so ginput(n=0) is a requirement. However, when I press enter on my laptop (with no middle mouse button), I get the error message: TypeError: stop_event_loop() takes exactly 1 argument (2 given) I've tried two different pieces of example code from the matplotlib SF page. I'm using Matplotlib 0.99.1 on Ubuntu 10.04. Is there any solution or workaround? If I cannot have this functionality, it is, unfortunately, kind of a deal breaker for at least some of my work, and I'd like to keep it purely Python. Best regards; Emil -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] ginput(0) termination error
Can't you do ginput(n=1) in a while loop? Ginput needs to end at some point, right? Initiating a never ending loop seems like the wrong solution for any real-life problem. On 06/07/2010 01:15 PM, Thøger Emil Juul Thorsen wrote: Bump - no one knows a solution/workaround to this? Hello list; I'm new to python/matplotlib, migrating from IDL. I need to do some interactive point selection with mouse, and the pyplot.ginput() routine seemed to be just the right thing here. I do however need to be able to make a not previously specified number of clicks, so ginput(n=0) is a requirement. However, when I press enter on my laptop (with no middle mouse button), I get the error message: TypeError: stop_event_loop() takes exactly 1 argument (2 given) I've tried two different pieces of example code from the matplotlib SF page. I'm using Matplotlib 0.99.1 on Ubuntu 10.04. Is there any solution or workaround? If I cannot have this functionality, it is, unfortunately, kind of a deal breaker for at least some of my work, and I'd like to keep it purely Python. Best regards; Emil -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] ginput(0) termination error
I think this is a known bug (unfortunately, the bug fix does not seem to be reflected in the maintenance version), but without a full traceback, I'm not 100% sure. You may use the svn version which have fixed this bug, or you may try the workaround described in the link below (check the clabel_monkeypatching.py). http://sourceforge.net/tracker/index.php?func=detailaid=2922835group_id=80706atid=560720 -JJ 2010/6/4 Thøger Emil Juul Thorsen thoe...@fys.ku.dk: Hello list; I'm new to python/matplotlib, migrating from IDL. I need to do some interactive point selection with mouse, and the pyplot.ginput() routine seemed to be just the right thing here. I do however need to be able to make a not previously specified number of clicks, so ginput(n=0) is a requirement. However, when I press enter on my laptop (with no middle mouse button), I get the error message: TypeError: stop_event_loop() takes exactly 1 argument (2 given) I've tried two different pieces of example code from the matplotlib SF page. I'm using Matplotlib 0.99.1 on Ubuntu 10.04. Is there any solution or workaround? If I cannot have this functionality, it is, unfortunately, kind of a deal breaker for at least some of my work, and I'd like to keep it purely Python. Best regards; Emil -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Help with imshow on Mac OS X 10.6 Snow Leopoard
Greetings, I just installed Python 2.6 (python.org), Numpy 1.4.1, and Matplotlib 0.99.1.2 all on Mac OS X 10.6 in an attempt to learn about scientific programming in python. Go easy on me since I am a begginer. The Python and Numpy seem to be working correctly. I can get matplotlib to make plots but I can't get it to show images. I tried the stinkbug example in the Matplotlib users guide documentation with no success. Errors are _NOT_ generated but neither are any results on the screen. The imread command produces a float32 matrix that contains all 1. values so I tried creating my own uint8 matrix with a diagnoal line. My code is below. Thanks for any help you can provide. # -*- coding: utf-8 -*- from numpy import * import matplotlib.pyplot as plt import matplotlib.image as mpimg print Numpy version: + __version__ a = array([10,20,30,40]) print result of a print a b = arange(4) print result of b print b c = linspace(-pi, pi, 30) print result of c print c # this plot code works print plot c plt.plot(c) plt.ylabel(-pi to + pi) plt.xlabel(value of c) plt.show() # this image processing code does not work print doing image processing stuff # img=mpimg.imread(/Users/rovitotv/Desktop/stinkbug.png) # this does not work img = zeros((10, 10), dtype=uint8) for i in range(10): img[i,i] = 255; plt.imshow(img) print data type of img: print img.dtype print size of img: + str(img.size) print img -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Help with imshow on Mac OS X 10.6 Snow Leopoard
Todd, I think you are missing a plt.show() at the end of your code. matplotlib, by default on most systems, does not show a plot until you tell it to using plt.show() command. See if that works, Ben Root On Mon, Jun 7, 2010 at 7:57 AM, Todd V Rovito rovit...@gmail.com wrote: Greetings, I just installed Python 2.6 (python.org), Numpy 1.4.1, and Matplotlib 0.99.1.2 all on Mac OS X 10.6 in an attempt to learn about scientific programming in python. Go easy on me since I am a begginer. The Python and Numpy seem to be working correctly. I can get matplotlib to make plots but I can't get it to show images. I tried the stinkbug example in the Matplotlib users guide documentation with no success. Errors are _NOT_ generated but neither are any results on the screen. The imread command produces a float32 matrix that contains all 1. values so I tried creating my own uint8 matrix with a diagnoal line. My code is below. Thanks for any help you can provide. # -*- coding: utf-8 -*- from numpy import * import matplotlib.pyplot as plt import matplotlib.image as mpimg print Numpy version: + __version__ a = array([10,20,30,40]) print result of a print a b = arange(4) print result of b print b c = linspace(-pi, pi, 30) print result of c print c # this plot code works print plot c plt.plot(c) plt.ylabel(-pi to + pi) plt.xlabel(value of c) plt.show() # this image processing code does not work print doing image processing stuff # img=mpimg.imread(/Users/rovitotv/Desktop/stinkbug.png) # this does not work img = zeros((10, 10), dtype=uint8) for i in range(10): img[i,i] = 255; plt.imshow(img) print data type of img: print img.dtype print size of img: + str(img.size) print img -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Animated Line2D
I modified the path_editor.py example in order to make a line editor, as attached. However, the line is not animated even the line has been correctly updated. It seems canvas.blit is not functioning correctly in motion_notify_callback. Canvas.blit works in draw_callback because the initial line can be plotted. I read the Curse implement which uses lines. This implementation uses visible but not animated property to achieve the animation. Any reason for that? I appreciated any suggestions to fix this problem. Jinsuo Nie line_editor.py Description: line_editor.py -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] sizing shapes on a plot to match axis units, not graphic points
I'm generating a plot of NxN squares, where the size of the square corresponds to the correlation between the (i,j) point. Every (i,i) point equals 1.0. I'm using scatter to do this, but the sizing appears to be in points from the graphic, rather than units of the two axes. Is there some way to account for this, or is there some better way to generate this image? # result = n x n matrix of correlations between points (i,j) a = arange(n).repeat(n).reshape(n,n) b = a.transpose() scatter(a.flatten(), b.flatten(), s=result, marker='s') You can see an example here, where N=300: (note, this is a 2.5 MB image): http://abitibi.sbgrid.org/se/data/shared/biodb/scop-class/a/39/1/5/.meta/tmscore2.png Thanks, Ian -- Ian Stokes-Rees, PhD W: http://hkl.hms.harvard.edu ijsto...@hkl.hms.harvard.edu T: +1 617 432-5608 x75 NEBioGrid, Harvard Medical School C: +1 617 331-5993 -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] sizing shapes on a plot to match axis units, not graphic points
Since this data is essentially a 2 dimensional image, you may want to experiment with imshow. Mike On 06/07/2010 11:16 AM, Ian Stokes-Rees wrote: I'm generating a plot of NxN squares, where the size of the square corresponds to the correlation between the (i,j) point. Every (i,i) point equals 1.0. I'm using scatter to do this, but the sizing appears to be in points from the graphic, rather than units of the two axes. Is there some way to account for this, or is there some better way to generate this image? # result = n x n matrix of correlations between points (i,j) a = arange(n).repeat(n).reshape(n,n) b = a.transpose() scatter(a.flatten(), b.flatten(), s=result, marker='s') You can see an example here, where N=300: (note, this is a 2.5 MB image): http://abitibi.sbgrid.org/se/data/shared/biodb/scop-class/a/39/1/5/.meta/tmscore2.png Thanks, Ian -- Michael Droettboom Science Software Branch Space Telescope Science Institute Baltimore, Maryland, USA -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] sizing shapes on a plot to match axis units, not graphic points
On Jun 7, 2010, at 11:16 AM, Ian Stokes-Rees wrote:I'm generating a plot of NxN squares, where the size of the squarecorresponds to the correlation between the (i,j) point. Every (i,i)point equals 1.0. I'm using "scatter" to do this, but the sizingappears to be in "points" from the graphic, rather than "units" of thetwo axes. Is there some way to account for this, or is there somebetter way to generate this image?# result = n x n matrix of correlations between points (i,j)a = arange(n).repeat(n).reshape(n,n)b = a.transpose()scatter(a.flatten(), b.flatten(), s=result, marker='s')You can see an example here, where N=300: (note, this is a 2.5 MB image):http://abitibi.sbgrid.org/se/data/shared/biodb/scop-class/a/39/1/5/.meta/tmscore2.pngThanks,IanWhat you're doing sounds very similar to a Hinton diagrom (or at least the resulting image looks similar). There's an example of plotting such a diagram in the scipy cookbook:http://www.scipy.org/Cookbook/Matplotlib/HintonDiagramsThe implementation is pretty slow because it loops through the data and draws each square one by one. I wrote a faster alternative a while back (see attached). It uses a custom PolyCollection, which uses data units for the areas instead of figure units. Also, I just noticed there's another implementation of Hinton diagrams in the matplotlib examples folder (examples/api/hinton_demo.py). For some reason, this example doesn't appear on the website, otherwise I'd link to it.I believe the difference between your plot and a hinton diagram is that you have a different metric for calculating the size of the squares.-Tonyimport numpy as np
import matplotlib.pyplot as plt
import matplotlib.collections as collections
import matplotlib.transforms as transforms
class SquareCollection(collections.RegularPolyCollection):
Return a collection of squares.
def __init__(self, **kwargs):
super(SquareCollection, self).__init__(4, rotation=np.pi/4., **kwargs)
def get_transform(self):
Return transform scaling circle areas to data space.
ax = self.axes
pts2pixels = 72.0 / ax.figure.dpi
scale_x = pts2pixels * ax.bbox.width / ax.viewLim.width
scale_y = pts2pixels * ax.bbox.height / ax.viewLim.height
return transforms.Affine2D().scale(scale_x, scale_y)
def hinton(inarray, max_weight=None):
Draw Hinton diagram for visualizing a weight matrix.
ax = plt.gca()
ax.set_axis_bgcolor('gray')
# make sure we're working with a numpy array, not a numpy matrix
inarray = np.asarray(inarray)
height, width = inarray.shape
if max_weight is None:
max_weight = 2**np.ceil(np.log(np.max(np.abs(inarray)))/np.log(2))
weights = np.clip(inarray/max_weight, -1, 1)
rows, cols = np.mgrid[:height, :width]
pos = np.where(weights 0)
neg = np.where(weights 0)
for idx, color in zip([pos, neg], ['white', 'black']):
if len(idx[0]) 0:
xy = zip(cols[idx], rows[idx])
circle_areas = np.pi / 2 * np.abs(weights[idx])
squares = SquareCollection(sizes=circle_areas,
offsets=xy, transOffset=ax.transData,
facecolor=color, edgecolor=color)
ax.add_collection(squares, autolim=True)
plt.axis('scaled')
ax.set_xlim(-0.5, width-0.5)
ax.set_ylim(height-0.5, -0.5)
ax.set_xlabel('column')
ax.set_ylabel('row')
ax.xaxis.set_ticks_position('top')
ax.xaxis.set_label_position('top')
if __name__ == '__main__':
u = lambda x: 3/4. * x**2 - 0.5 * x
A = np.array([[0, 0.5, 1], [-0.5, 0, 0.5], [-1, -0.5, 0]])
print A
hinton(A)
plt.show()
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Re: [Matplotlib-users] Animated Line2D
On Mon, Jun 7, 2010 at 10:14 AM, Nie, Jinsuo j...@bnl.gov wrote: I modified the path_editor.py example in order to make a line editor, as attached. However, the line is not animated even the line has been correctly updated. It seems canvas.blit is not functioning correctly in motion_notify_callback. Canvas.blit works in draw_callback because the initial line can be plotted. Unfortunately, I cannot understand your problem. I have tried running your attached example and it seems to run fine on my system (I can drag the vertices and the line drawing is updated). Can you describe the problem you are seeing? Could this be a version problem -- what version of mpl are you running? jo...@udesktop191:Downloads python -c 'import matplotlib; print matplotlib.__version__' 1.0.svn I read the Curse implement which uses lines. This implementation uses visible but not animated property to achieve the animation. Any reason for that? Do you mean matplotlib.widgets.Cursor? It does use the animated property -- at least in the svn version. See the line in the __init__ function: if useblit: lineprops['animated'] = True JDH -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Animated Line2D
John, Thank you very much for a prompt reply. I am using Ipython with QT4 backend for the examples. I can have animated plot (dragable vertices) for the path_editor.py, but not for the line_editor.py. My python installation is pythonxy on windows 7. Could you please tell me your installation? Yes, I do mean the matplotlib.widgets.Cursor, and I have version of 0.99.1. My version does not have the two lines as you mentioned. -- Jinsuo -Original Message- From: John Hunter [mailto:jdh2...@gmail.com] Sent: Monday, June 07, 2010 12:19 PM To: Nie, Jinsuo Cc: matplotlib-users@lists.sourceforge.net Subject: Re: [Matplotlib-users] Animated Line2D On Mon, Jun 7, 2010 at 10:14 AM, Nie, Jinsuo j...@bnl.gov wrote: I modified the path_editor.py example in order to make a line editor, as attached. However, the line is not animated even the line has been correctly updated. It seems canvas.blit is not functioning correctly in motion_notify_callback. Canvas.blit works in draw_callback because the initial line can be plotted. Unfortunately, I cannot understand your problem. I have tried running your attached example and it seems to run fine on my system (I can drag the vertices and the line drawing is updated). Can you describe the problem you are seeing? Could this be a version problem -- what version of mpl are you running? jo...@udesktop191:Downloads python -c 'import matplotlib; print matplotlib.__version__' 1.0.svn I read the Curse implement which uses lines. This implementation uses visible but not animated property to achieve the animation. Any reason for that? Do you mean matplotlib.widgets.Cursor? It does use the animated property -- at least in the svn version. See the line in the __init__ function: if useblit: lineprops['animated'] = True JDH -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Index Out of Range Error after Installation on RHEL5
Hi, I have Python 2.6 installed on RHEL5 (and Numpy 1.4.1) and am trying to install matplotlib. Installation occurs without any error messages although I do get a bunch of warnings at the end. /usr/bin/ld: skipping incompatible /usr/lib/libtk8.4.so when searching for -ltk8.4 /usr/bin/ld: skipping incompatible /usr/lib/libtcl8.4.so when searching for -ltcl8.4 /usr/bin/ld: skipping incompatible /usr/lib/libfreetype.so when searching for -lfreetype /usr/bin/ld: skipping incompatible /usr/lib/libz.so when searching for -lz /usr/bin/ld: skipping incompatible /usr/lib/libz.a when searching for -lz /usr/bin/ld: skipping incompatible /usr/lib/libm.so when searching for -lm /usr/bin/ld: skipping incompatible /usr/lib/libm.a when searching for -lm /usr/bin/ld: skipping incompatible /usr/lib/libm.so when searching for -lm /usr/bin/ld: skipping incompatible /usr/lib/libm.a when searching for -lm /usr/bin/ld: skipping incompatible /usr/lib/libpthread.so when searching for -lpthread /usr/bin/ld: skipping incompatible /usr/lib/libpthread.a when searching for -lpthread /usr/bin/ld: skipping incompatible /usr/lib/libc.so when searching for -lc /usr/bin/ld: skipping incompatible /usr/lib/libc.a when searching for -lc When I try using matplotlib I get the following error: Python 2.6.5 (r265:79063, May 18 2010, 11:20:57) [GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] on linux2 Type help, copyright, credits or license for more information. import matplotlib.pyplot as plt plt.plot([1,0],[2,3]) Traceback (most recent call last): File stdin, line 1, in module File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/matplotlib/pyplot.py, line 2141, in plot ret = ax.plot(*args, **kwargs) File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/matplotlib/axes.py, line 3437, in plot self.autoscale_view(scalex=scalex, scaley=scaley) File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/matplotlib/axes.py, line 1624, in autoscale_view XL = self.xaxis.get_major_locator().view_limits(x0, x1) File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/matplotlib/ticker.py, line 1014, in view_limits return np.take(self.bin_boundaries(dmin, dmax), [0,-1]) File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/numpy/core/fromnumeric.py, line 103, in take return take(indices, axis, out, mode) IndexError: index out of range for array Any help would be appreciated. I've tried several versions of matplotlib. I also was able to get it installed on a different RHEL5 machine a while back and am not sure what is different about this machine. thanks - dharhas -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] masked array problem
I am having a problem when using masked arrays. The attached scripts are identical except for the data. One will actually produce a plot, whereas the other will not. I cannot figure out what I am doing wrong, such that the second script fails. Am I doing something wrong with this, or is this an actual bug? Thanks, --James Evans masked_array-fail.py Description: Binary data masked_array-good.py Description: Binary data -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] masked array problem
On 06/07/2010 10:41 AM, James Evans wrote: I am having a problem when using masked arrays. The attached scripts are identical except for the data. One will actually produce a plot, whereas the other will not. I cannot figure out what I am doing wrong, such that the second script fails. Am I doing something wrong with this, or is this an actual bug? Maybe a bug that was fixed in mpl, or in a newer version of numpy than you are using. Using both mpl and numpy from svn, both scripts work for me. Eric Thanks, --James Evans -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Index Out of Range Error after Installation on RHEL5
Dharhas, Is it possible to find out which version of python was installed for your other RHEL5 machine? I don't know if that makes a difference or not, but RHEL5 by default uses Python 2.4. Ben Root On Mon, Jun 7, 2010 at 1:48 PM, Dharhas Pothina dharhas.poth...@twdb.state.tx.us wrote: Hi, I have Python 2.6 installed on RHEL5 (and Numpy 1.4.1) and am trying to install matplotlib. Installation occurs without any error messages although I do get a bunch of warnings at the end. /usr/bin/ld: skipping incompatible /usr/lib/libtk8.4.so when searching for -ltk8.4 /usr/bin/ld: skipping incompatible /usr/lib/libtcl8.4.so when searching for -ltcl8.4 /usr/bin/ld: skipping incompatible /usr/lib/libfreetype.so when searching for -lfreetype /usr/bin/ld: skipping incompatible /usr/lib/libz.so when searching for -lz /usr/bin/ld: skipping incompatible /usr/lib/libz.a when searching for -lz /usr/bin/ld: skipping incompatible /usr/lib/libm.so when searching for -lm /usr/bin/ld: skipping incompatible /usr/lib/libm.a when searching for -lm /usr/bin/ld: skipping incompatible /usr/lib/libm.so when searching for -lm /usr/bin/ld: skipping incompatible /usr/lib/libm.a when searching for -lm /usr/bin/ld: skipping incompatible /usr/lib/libpthread.so when searching for -lpthread /usr/bin/ld: skipping incompatible /usr/lib/libpthread.a when searching for -lpthread /usr/bin/ld: skipping incompatible /usr/lib/libc.so when searching for -lc /usr/bin/ld: skipping incompatible /usr/lib/libc.a when searching for -lc When I try using matplotlib I get the following error: Python 2.6.5 (r265:79063, May 18 2010, 11:20:57) [GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] on linux2 Type help, copyright, credits or license for more information. import matplotlib.pyplot as plt plt.plot([1,0],[2,3]) Traceback (most recent call last): File stdin, line 1, in module File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/matplotlib/pyplot.py, line 2141, in plot ret = ax.plot(*args, **kwargs) File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/matplotlib/axes.py, line 3437, in plot self.autoscale_view(scalex=scalex, scaley=scaley) File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/matplotlib/axes.py, line 1624, in autoscale_view XL = self.xaxis.get_major_locator().view_limits(x0, x1) File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/matplotlib/ticker.py, line 1014, in view_limits return np.take(self.bin_boundaries(dmin, dmax), [0,-1]) File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/numpy/core/fromnumeric.py, line 103, in take return take(indices, axis, out, mode) IndexError: index out of range for array Any help would be appreciated. I've tried several versions of matplotlib. I also was able to get it installed on a different RHEL5 machine a while back and am not sure what is different about this machine. thanks - dharhas -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Index Out of Range Error after Installation on RHEL5
Ben, The matplotlib on the other working machine is using python 2.6.4. On this machine I am using python 2.6.5. The default python on both machines in python 2.4 but I set up python 2.6 as an alternate install in /opt/python26. - dharhas Benjamin Root ben.r...@ou.edu 6/7/2010 3:56 PM Dharhas, Is it possible to find out which version of python was installed for your other RHEL5 machine? I don't know if that makes a difference or not, but RHEL5 by default uses Python 2.4. Ben Root On Mon, Jun 7, 2010 at 1:48 PM, Dharhas Pothina dharhas.poth...@twdb.state.tx.us wrote: Hi, I have Python 2.6 installed on RHEL5 (and Numpy 1.4.1) and am trying to install matplotlib. Installation occurs without any error messages although I do get a bunch of warnings at the end. /usr/bin/ld: skipping incompatible /usr/lib/libtk8.4.so when searching for -ltk8.4 /usr/bin/ld: skipping incompatible /usr/lib/libtcl8.4.so when searching for -ltcl8.4 /usr/bin/ld: skipping incompatible /usr/lib/libfreetype.so when searching for -lfreetype /usr/bin/ld: skipping incompatible /usr/lib/libz.so when searching for -lz /usr/bin/ld: skipping incompatible /usr/lib/libz.a when searching for -lz /usr/bin/ld: skipping incompatible /usr/lib/libm.so when searching for -lm /usr/bin/ld: skipping incompatible /usr/lib/libm.a when searching for -lm /usr/bin/ld: skipping incompatible /usr/lib/libm.so when searching for -lm /usr/bin/ld: skipping incompatible /usr/lib/libm.a when searching for -lm /usr/bin/ld: skipping incompatible /usr/lib/libpthread.so when searching for -lpthread /usr/bin/ld: skipping incompatible /usr/lib/libpthread.a when searching for -lpthread /usr/bin/ld: skipping incompatible /usr/lib/libc.so when searching for -lc /usr/bin/ld: skipping incompatible /usr/lib/libc.a when searching for -lc When I try using matplotlib I get the following error: Python 2.6.5 (r265:79063, May 18 2010, 11:20:57) [GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] on linux2 Type help, copyright, credits or license for more information. import matplotlib.pyplot as plt plt.plot([1,0],[2,3]) Traceback (most recent call last): File stdin, line 1, in module File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/matplotlib/pyplot.py, line 2141, in plot ret = ax.plot(*args, **kwargs) File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/matplotlib/axes.py, line 3437, in plot self.autoscale_view(scalex=scalex, scaley=scaley) File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/matplotlib/axes.py, line 1624, in autoscale_view XL = self.xaxis.get_major_locator().view_limits(x0, x1) File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/matplotlib/ticker.py, line 1014, in view_limits return np.take(self.bin_boundaries(dmin, dmax), [0,-1]) File /home/swdata/.virtualenvs/web/lib/python2.6/site-packages/numpy/core/fromnumeric.py, line 103, in take return take(indices, axis, out, mode) IndexError: index out of range for array Any help would be appreciated. I've tried several versions of matplotlib. I also was able to get it installed on a different RHEL5 machine a while back and am not sure what is different about this machine. thanks - dharhas -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] easy_install in virtualenv -- error: command 'gcc' failed with exit status 1
Hi, Hoping someone can help with this... I'm trying to install in a virtual environment created with --no-site-packages I've followed all instructions re cleaning the existing .matplotlib cache/directory and deleted .egg files etc (virtualenv) ... $ easy_install matplotlib -- gives me an error: command 'gcc' failed with exit status 1 The existing components (note: all from within the virtualenv): $ python --version -- 2.6.4 $ python -c 'import numpy; print numpy.__version__'-- 1.4.1 $ gcc --version -- 4.4.1 $ uname -a -- Linux HP-desktop 2.6.31-22-generic-pae #60-Ubuntu SMP Thu May 27 01:40:15 UTC 2010 i686 GNU/Linux (I'm running this on Ubuntu Karmic Koala -- please note that installing from the Synaptic Package Manager gives me a working version which runs correctly and as expected, using ipython -pylab etc) This may be a question of downloading a version other than v0.99.3 but in that case I'd not be sure which one to use(!) I'd be really grateful for any assistance you can give (and finally the output/error from easy_install matplotlib) Searching for matplotlib Reading http://pypi.python.org/simple/matplotlib/ Reading http://matplotlib.sourceforge.net Reading http://sourceforge.net/project/showfiles.php?group_id=80706package_id=82474 Reading https://sourceforge.net/project/showfiles.php?group_id=80706package_id=278194 Reading http://sourceforge.net/project/showfiles.php?group_id=80706 Reading https://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-0.99.1/ Reading https://sourceforge.net/project/showfiles.php?group_id=80706package_id=82474 Best match: matplotlib 0.99.3 Downloading http://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-0.99.3/matplotlib-0.99.3.tar.gz/download Processing download Running matplotlib-0.99.3/setup.py -q bdist_egg --dist-dir /tmp/easy_install-7FYGk8/matplotlib-0.99.3/egg-dist-tmp-7gnrbR BUILDING MATPLOTLIB matplotlib: 0.99.3 python: 2.6.4 (r264:75706, Dec 7 2009, 18:45:15) [GCC 4.4.1] platform: linux2 REQUIRED DEPENDENCIES numpy: 1.4.1 freetype2: found, but unknown version (no pkg-config) * WARNING: Could not find 'freetype2' headers in any * of '/usr/local/include', '/usr/include', '.', * '/usr/local/include/freetype2', * '/usr/include/freetype2', './freetype2'. OPTIONAL BACKEND DEPENDENCIES libpng: found, but unknown version (no pkg-config) * Could not find 'libpng' headers in any of * '/usr/local/include', '/usr/include', '.' 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. wxPython: no * wxPython not found Gtk+: no * Building for Gtk+ requires pygtk; you must be able * to import gtk in your build/install environment Mac OS X native: no Qt: no Qt4: no Cairo: no OPTIONAL DATE/TIMEZONE DEPENDENCIES datetime: present, version unknown dateutil: matplotlib will provide pytz: matplotlib will provide adding pytz OPTIONAL USETEX DEPENDENCIES dvipng: no ghostscript: 8.70 latex: no pdftops: 0.12.0 [Edit setup.cfg to suppress the above messages] pymods ['pylab'] packages ['matplotlib', 'matplotlib.backends', 'matplotlib.projections', 'mpl_toolkits', 'mpl_toolkits.mplot3d', 'mpl_toolkits.axes_grid', 'matplotlib.sphinxext', 'matplotlib.numerix', 'matplotlib.numerix.mlab', ' matplotlib.numerix.ma', 'matplotlib.numerix.linear_algebra', 'matplotlib.numerix.random_array', 'matplotlib.numerix.fft', 'matplotlib.delaunay', 'pytz', 'dateutil', 'dateutil/zoneinfo'] warning: no files found matching 'MANIFEST' warning: no files found matching 'lib/mpl_toolkits' cc1plus: warning: command line option -Wstrict-prototypes is valid for Ada/C/ObjC but not for C++ In file included from /usr/include/c++/4.4/ext/hash_map:59, from ./CXX/Extensions.hxx:68, from src/ft2font.h:4, from src/ft2font.cpp:1: /usr/include/c++/4.4/backward/backward_warning.h:28:2: warning:
Re: [Matplotlib-users] easy_install in virtualenv -- error: command 'gcc' failed with exit status 1
On 06/07/2010 01:15 PM, Robert Sudwarts wrote: Hi, Hoping someone can help with this... I'm trying to install in a virtual environment created with --no-site-packages I've followed all instructions re cleaning the existing .matplotlib cache/directory and deleted .egg files etc (virtualenv) ... $ easy_install matplotlib -- gives me an error: command 'gcc' failed with exit status 1 The existing components (note: all from within the virtualenv): $ python --version -- 2.6.4 $ python -c 'import numpy; print numpy.__version__'-- 1.4.1 $ gcc --version -- 4.4.1 $ uname -a -- Linux HP-desktop 2.6.31-22-generic-pae #60-Ubuntu SMP Thu May 27 01:40:15 UTC 2010 i686 GNU/Linux (I'm running this on Ubuntu Karmic Koala -- please note that installing from the Synaptic Package Manager gives me a working version which runs correctly and as expected, using ipython -pylab etc) This may be a question of downloading a version other than v0.99.3 but in that case I'd not be sure which one to use(!) I'd be really grateful for any assistance you can give It looks like the problem is that you are missing the -dev packages for various libraries. In your output below, wherever you see something about a missing header, it means you need to install a corresponding -dev package. Eric (and finally the output/error from easy_install matplotlib) Searching for matplotlib Reading http://pypi.python.org/simple/matplotlib/ Reading http://matplotlib.sourceforge.net Reading http://sourceforge.net/project/showfiles.php?group_id=80706package_id=82474 http://sourceforge.net/project/showfiles.php?group_id=80706package_id=82474 Reading https://sourceforge.net/project/showfiles.php?group_id=80706package_id=278194 https://sourceforge.net/project/showfiles.php?group_id=80706package_id=278194 Reading http://sourceforge.net/project/showfiles.php?group_id=80706 Reading https://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-0.99.1/ Reading https://sourceforge.net/project/showfiles.php?group_id=80706package_id=82474 https://sourceforge.net/project/showfiles.php?group_id=80706package_id=82474 Best match: matplotlib 0.99.3 Downloading http://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-0.99.3/matplotlib-0.99.3.tar.gz/download Processing download Running matplotlib-0.99.3/setup.py -q bdist_egg --dist-dir /tmp/easy_install-7FYGk8/matplotlib-0.99.3/egg-dist-tmp-7gnrbR BUILDING MATPLOTLIB matplotlib: 0.99.3 python: 2.6.4 (r264:75706, Dec 7 2009, 18:45:15) [GCC 4.4.1] platform: linux2 REQUIRED DEPENDENCIES numpy: 1.4.1 freetype2: found, but unknown version (no pkg-config) * WARNING: Could not find 'freetype2' headers in any * of '/usr/local/include', '/usr/include', '.', * '/usr/local/include/freetype2', * '/usr/include/freetype2', './freetype2'. OPTIONAL BACKEND DEPENDENCIES libpng: found, but unknown version (no pkg-config) * Could not find 'libpng' headers in any of * '/usr/local/include', '/usr/include', '.' 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. wxPython: no * wxPython not found Gtk+: no * Building for Gtk+ requires pygtk; you must be able * to import gtk in your build/install environment Mac OS X native: no Qt: no Qt4: no Cairo: no OPTIONAL DATE/TIMEZONE DEPENDENCIES datetime: present, version unknown dateutil: matplotlib will provide pytz: matplotlib will provide adding pytz OPTIONAL USETEX DEPENDENCIES dvipng: no ghostscript: 8.70 latex: no pdftops: 0.12.0 [Edit setup.cfg to suppress the above messages] pymods ['pylab'] packages ['matplotlib', 'matplotlib.backends', 'matplotlib.projections', 'mpl_toolkits', 'mpl_toolkits.mplot3d', 'mpl_toolkits.axes_grid', 'matplotlib.sphinxext', 'matplotlib.numerix',
Re: [Matplotlib-users] easy_install in virtualenv -- error: command 'gcc' failed with exit status 1
Thanks for your quick response Eric -- I've just spotted the freetype libpng packages which will also need to be installed... ... and having downloaded freetype etc (and seen its rather interesting installation instructions...) I'll have to figure out how to get this to end up in the right place! Thanks for your help. Rob On 8 June 2010 00:15, Robert Sudwarts robert.sudwa...@gmail.com wrote: Hi, Hoping someone can help with this... I'm trying to install in a virtual environment created with --no-site-packages I've followed all instructions re cleaning the existing .matplotlib cache/directory and deleted .egg files etc (virtualenv) ... $ easy_install matplotlib -- gives me an error: command 'gcc' failed with exit status 1 The existing components (note: all from within the virtualenv): $ python --version -- 2.6.4 $ python -c 'import numpy; print numpy.__version__'-- 1.4.1 $ gcc --version -- 4.4.1 $ uname -a -- Linux HP-desktop 2.6.31-22-generic-pae #60-Ubuntu SMP Thu May 27 01:40:15 UTC 2010 i686 GNU/Linux (I'm running this on Ubuntu Karmic Koala -- please note that installing from the Synaptic Package Manager gives me a working version which runs correctly and as expected, using ipython -pylab etc) This may be a question of downloading a version other than v0.99.3 but in that case I'd not be sure which one to use(!) I'd be really grateful for any assistance you can give (and finally the output/error from easy_install matplotlib) Searching for matplotlib Reading http://pypi.python.org/simple/matplotlib/ Reading http://matplotlib.sourceforge.net Reading http://sourceforge.net/project/showfiles.php?group_id=80706package_id=82474 Reading https://sourceforge.net/project/showfiles.php?group_id=80706package_id=278194 Reading http://sourceforge.net/project/showfiles.php?group_id=80706 Reading https://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-0.99.1/ Reading https://sourceforge.net/project/showfiles.php?group_id=80706package_id=82474 Best match: matplotlib 0.99.3 Downloading http://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-0.99.3/matplotlib-0.99.3.tar.gz/download Processing download Running matplotlib-0.99.3/setup.py -q bdist_egg --dist-dir /tmp/easy_install-7FYGk8/matplotlib-0.99.3/egg-dist-tmp-7gnrbR BUILDING MATPLOTLIB matplotlib: 0.99.3 python: 2.6.4 (r264:75706, Dec 7 2009, 18:45:15) [GCC 4.4.1] platform: linux2 REQUIRED DEPENDENCIES numpy: 1.4.1 freetype2: found, but unknown version (no pkg-config) * WARNING: Could not find 'freetype2' headers in any * of '/usr/local/include', '/usr/include', '.', * '/usr/local/include/freetype2', * '/usr/include/freetype2', './freetype2'. OPTIONAL BACKEND DEPENDENCIES libpng: found, but unknown version (no pkg-config) * Could not find 'libpng' headers in any of * '/usr/local/include', '/usr/include', '.' 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. wxPython: no * wxPython not found Gtk+: no * Building for Gtk+ requires pygtk; you must be able * to import gtk in your build/install environment Mac OS X native: no Qt: no Qt4: no Cairo: no OPTIONAL DATE/TIMEZONE DEPENDENCIES datetime: present, version unknown dateutil: matplotlib will provide pytz: matplotlib will provide adding pytz OPTIONAL USETEX DEPENDENCIES dvipng: no ghostscript: 8.70 latex: no pdftops: 0.12.0 [Edit setup.cfg to suppress the above messages] pymods ['pylab'] packages ['matplotlib', 'matplotlib.backends', 'matplotlib.projections', 'mpl_toolkits', 'mpl_toolkits.mplot3d', 'mpl_toolkits.axes_grid', 'matplotlib.sphinxext', 'matplotlib.numerix', 'matplotlib.numerix.mlab', ' matplotlib.numerix.ma', 'matplotlib.numerix.linear_algebra', 'matplotlib.numerix.random_array', 'matplotlib.numerix.fft',
[Matplotlib-users] better way to change spine and ticklabel colors?
Hi all, I've really been enjoying matplotlib, but in getting my graphs to look just the way I want, I find myself having to just through some hoops to get there. my question is: is there a better way of changing spine, tick, and ticklabels colors? Here's what I use right now: [s.set_color(color) for s in ax.spines.values()] [s.set_color(color) for s in ax.yaxis.get_ticklines()] [s.set_color(color) for s in ax.xaxis.get_ticklines()] [(s.set_color(color),s.set_size(8)) for s in ax.xaxis.get_ticklabels()] [(s.set_color(color),s.set_size(8)) for s in ax.yaxis.get_ticklabels()] ax.yaxis.grid(which='major',linestyle='-',color=color,alpha=.3) I realize that I should probably set the rcParam equivalents before creating ax. But once I have an axesSubplot ax, what's the best way to fiddle with these parameters? you can see a full example here: http://pirsquared.org/blog/2010/06/07/ca-prop/ best, Paul Ivanov -- I only use the 314 gmail account for mailinglists. Please send off-list personal correspondence to my initials (two letters) at berkeley dot edu. -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Custom data transformations with log ticks
Hello All,
I have data that I need to apply log-based transformations to followed
by plotting. Ideally I would like the plot to display the nicely
formatted log-scale major/minor ticks as when setting xscale('log').
Of course, doing that applies the default log transformation to
already log-transformed data.
I played around with the matplotlib.ticker classes, but the LogLocator
only seems to work properly when applied to a plot with axes set to
log scale or plotted with something like semilog (as in
http://old.nabble.com/ticks---labels-td18931344.html).
An example:
import matplotlib.pyplot as plt
import matplotlib.ticker as mt
import numpy as np
x = [10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300, 400, 500, 600,
700, 800, 900, 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000,
1]
xlog = np.log10(x) #or some other more complex transform
y = [1 for i in x]
fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(xlog,y, '.', c='blue', ms=2)
ax.xaxis.set_major_locator(mt.LogLocator())
plt.show()
Resulting in: http://imgur.com/MtsLE.png
As opposed to what I would like: http://imgur.com/QELVD.png (plotting
x instead of xlog, and ax.set_xscale('log'))
I'm probably missing something simple, but I haven't been able to
figure it out as of yet.
Thanks in advance for any suggestions/help.
Shareef
--
ThinkGeek and WIRED's GeekDad team up for the Ultimate
GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the
lucky parental unit. See the prize list and enter to win:
http://p.sf.net/sfu/thinkgeek-promo
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Re: [Matplotlib-users] better way to change spine and ticklabel colors?
I would like to second this sentiment. I just encountered a situation today where I needed to modify the fontsize of the ticklabels and I could not find any obvious method for modifying the properties. Unless I am mistaken and there are methods for this, shall I file a feature request? Ben Root On Mon, Jun 7, 2010 at 7:55 PM, Paul Ivanov pivanov...@gmail.com wrote: Hi all, I've really been enjoying matplotlib, but in getting my graphs to look just the way I want, I find myself having to just through some hoops to get there. my question is: is there a better way of changing spine, tick, and ticklabels colors? Here's what I use right now: [s.set_color(color) for s in ax.spines.values()] [s.set_color(color) for s in ax.yaxis.get_ticklines()] [s.set_color(color) for s in ax.xaxis.get_ticklines()] [(s.set_color(color),s.set_size(8)) for s in ax.xaxis.get_ticklabels()] [(s.set_color(color),s.set_size(8)) for s in ax.yaxis.get_ticklabels()] ax.yaxis.grid(which='major',linestyle='-',color=color,alpha=.3) I realize that I should probably set the rcParam equivalents before creating ax. But once I have an axesSubplot ax, what's the best way to fiddle with these parameters? you can see a full example here: http://pirsquared.org/blog/2010/06/07/ca-prop/ best, Paul Ivanov -- I only use the 314 gmail account for mailinglists. Please send off-list personal correspondence to my initials (two letters) at berkeley dot edu. -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] easy_install in virtualenv -- error: command 'gcc' failed with exit status 1
On 06/07/2010 02:36 PM, Robert Sudwarts wrote: Thanks for your quick response Eric -- I've just spotted the freetype libpng packages which will also need to be installed... ... and having downloaded freetype etc (and seen its rather interesting installation instructions...) I'll have to figure out how to get this to end up in the right place! I would (and do) just install these library dependencies and their -dev versions via the usual ubuntu package system, so it should be very simple. There is no need to install them from source. Eric Thanks for your help. Rob On 8 June 2010 00:15, Robert Sudwarts robert.sudwa...@gmail.com mailto:robert.sudwa...@gmail.com wrote: Hi, Hoping someone can help with this... I'm trying to install in a virtual environment created with --no-site-packages I've followed all instructions re cleaning the existing .matplotlib cache/directory and deleted .egg files etc (virtualenv) ... $ easy_install matplotlib -- gives me an error: command 'gcc' failed with exit status 1 The existing components (note: all from within the virtualenv): $ python --version -- 2.6.4 $ python -c 'import numpy; print numpy.__version__'-- 1.4.1 $ gcc --version -- 4.4.1 $ uname -a -- Linux HP-desktop 2.6.31-22-generic-pae #60-Ubuntu SMP Thu May 27 01:40:15 UTC 2010 i686 GNU/Linux (I'm running this on Ubuntu Karmic Koala -- please note that installing from the Synaptic Package Manager gives me a working version which runs correctly and as expected, using ipython -pylab etc) This may be a question of downloading a version other than v0.99.3 but in that case I'd not be sure which one to use(!) I'd be really grateful for any assistance you can give (and finally the output/error from easy_install matplotlib) Searching for matplotlib Reading http://pypi.python.org/simple/matplotlib/ Reading http://matplotlib.sourceforge.net Reading http://sourceforge.net/project/showfiles.php?group_id=80706package_id=82474 http://sourceforge.net/project/showfiles.php?group_id=80706package_id=82474 Reading https://sourceforge.net/project/showfiles.php?group_id=80706package_id=278194 https://sourceforge.net/project/showfiles.php?group_id=80706package_id=278194 Reading http://sourceforge.net/project/showfiles.php?group_id=80706 Reading https://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-0.99.1/ Reading https://sourceforge.net/project/showfiles.php?group_id=80706package_id=82474 https://sourceforge.net/project/showfiles.php?group_id=80706package_id=82474 Best match: matplotlib 0.99.3 Downloading http://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-0.99.3/matplotlib-0.99.3.tar.gz/download Processing download Running matplotlib-0.99.3/setup.py -q bdist_egg --dist-dir /tmp/easy_install-7FYGk8/matplotlib-0.99.3/egg-dist-tmp-7gnrbR BUILDING MATPLOTLIB matplotlib: 0.99.3 python: 2.6.4 (r264:75706, Dec 7 2009, 18:45:15) [GCC 4.4.1] platform: linux2 REQUIRED DEPENDENCIES numpy: 1.4.1 freetype2: found, but unknown version (no pkg-config) * WARNING: Could not find 'freetype2' headers in any * of '/usr/local/include', '/usr/include', '.', * '/usr/local/include/freetype2', * '/usr/include/freetype2', './freetype2'. OPTIONAL BACKEND DEPENDENCIES libpng: found, but unknown version (no pkg-config) * Could not find 'libpng' headers in any of * '/usr/local/include', '/usr/include', '.' 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. wxPython: no * wxPython not found Gtk+: no * Building for Gtk+ requires pygtk; you must be able * to import gtk in your build/install environment Mac OS X native: no Qt: no
Re: [Matplotlib-users] better way to change spine and ticklabel colors?
On 06/07/2010 04:31 PM, Benjamin Root wrote: I would like to second this sentiment. I just encountered a situation today where I needed to modify the fontsize of the ticklabels and I could not find any obvious method for modifying the properties. Unless I am mistaken and there are methods for this, shall I file a feature request? I'm already working on it, and have the low level parts done. I just have to put in the higher-level API and commit it. Eric Ben Root On Mon, Jun 7, 2010 at 7:55 PM, Paul Ivanov pivanov...@gmail.com mailto:pivanov...@gmail.com wrote: Hi all, I've really been enjoying matplotlib, but in getting my graphs to look just the way I want, I find myself having to just through some hoops to get there. my question is: is there a better way of changing spine, tick, and ticklabels colors? Here's what I use right now: [s.set_color(color) for s in ax.spines.values()] [s.set_color(color) for s in ax.yaxis.get_ticklines()] [s.set_color(color) for s in ax.xaxis.get_ticklines()] [(s.set_color(color),s.set_size(8)) for s in ax.xaxis.get_ticklabels()] [(s.set_color(color),s.set_size(8)) for s in ax.yaxis.get_ticklabels()] ax.yaxis.grid(which='major',linestyle='-',color=color,alpha=.3) I realize that I should probably set the rcParam equivalents before creating ax. But once I have an axesSubplot ax, what's the best way to fiddle with these parameters? you can see a full example here: http://pirsquared.org/blog/2010/06/07/ca-prop/ best, Paul Ivanov -- I only use the 314 gmail account for mailinglists. Please send off-list personal correspondence to my initials (two letters) at berkeley dot edu. -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net mailto:Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Help with imshow on Mac OS X 10.6 Snow Leopoard
Ben, That worked great, thanks!!! Just a few points. The documentation under the image tutorial section does not specify that a user has to do plt.show(), should I submit a bug report or something? I changed my code and listed it below it works as long as I comment out the plot c section. In other words if I perform a normal 2d plot then close plot window the image plot does not product a result. If I comment out the plot c section then the image plot works great. Any ideas? Even the stink bug example is working when I read a image from disk. Thanks. # -*- coding: utf-8 -*- from numpy import * import matplotlib.pyplot as plt import matplotlib.image as mpimg print Numpy version: + __version__ a = array([10,20,30,40]) print result of a print a b = arange(4) print result of b print b c = linspace(-pi, pi, 30) print result of c print c # this plot code works print plot c plt.plot(c) plt.ylabel(-pi to + pi) plt.xlabel(value of c) plt.show() # this image processing code does not work print doing image processing stuff img=mpimg.imread(/Users/rovitotv/Desktop/stinkbug.png) # this does not work ##img = zeros((10, 10), dtype=uint8) ##for i in range(10): ##img[i,i] = 255; plt.imshow(img) plt.show() print data type of img: print img.dtype print size of img: + str(img.size) print img On Mon, Jun 7, 2010 at 10:04 AM, Benjamin Root ben.r...@ou.edu wrote: Todd, I think you are missing a plt.show() at the end of your code. matplotlib, by default on most systems, does not show a plot until you tell it to using plt.show() command. See if that works, Ben Root On Mon, Jun 7, 2010 at 7:57 AM, Todd V Rovito rovit...@gmail.comwrote: Greetings, I just installed Python 2.6 (python.org), Numpy 1.4.1, and Matplotlib 0.99.1.2 all on Mac OS X 10.6 in an attempt to learn about scientific programming in python. Go easy on me since I am a begginer. The Python and Numpy seem to be working correctly. I can get matplotlib to make plots but I can't get it to show images. I tried the stinkbug example in the Matplotlib users guide documentation with no success. Errors are _NOT_ generated but neither are any results on the screen. The imread command produces a float32 matrix that contains all 1. values so I tried creating my own uint8 matrix with a diagnoal line. My code is below. Thanks for any help you can provide. # -*- coding: utf-8 -*- from numpy import * import matplotlib.pyplot as plt import matplotlib.image as mpimg print Numpy version: + __version__ a = array([10,20,30,40]) print result of a print a b = arange(4) print result of b print b c = linspace(-pi, pi, 30) print result of c print c # this plot code works print plot c plt.plot(c) plt.ylabel(-pi to + pi) plt.xlabel(value of c) plt.show() # this image processing code does not work print doing image processing stuff # img=mpimg.imread(/Users/rovitotv/Desktop/stinkbug.png) # this does not work img = zeros((10, 10), dtype=uint8) for i in range(10): img[i,i] = 255; plt.imshow(img) print data type of img: print img.dtype print size of img: + str(img.size) print img -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
