matplotlib-users Mailing List for matplotlib

>>>>> "esatel" == esatel <eli...@pa...> writes:
 esatel> Hi. Am a new user, running Enthought Python23 on Windows
 esatel> XP. I am trying to run the simple_plot and subplot_demo.py
 esatel> examples. I am getting the error message below regardless
 esatel> of which backend I use. Am I doing something wrong in the
 esatel> configuration? Thanks Eli
No. we're doing something wrong.
There was a bug in the font manager in the 0.60.1 release. matplotlib
searches your computer for fonts and stores the results in a cache
table on the filesystem. Regular users of matplotlib (like me!) have
a cache table already built and so did not find the bug in prerelease
tests. New users (like you) will experience the bug when you first
load matplotlib.
I've uploaded a 0.60.2 matplotlib release to the sourceforge site that
fixes the bug. This includes the src distributions and the windows
distribution for Numeric (which should work fine with the enthought
edition of python). The numarray/matplotlib builds for win32 will be
up as soon as we can get them done.
Sorry for the trouble,
JDH

Hi. Am a new user, running Enthought Python23 on Windows XP. I am trying to 
run the simple_plot and subplot_demo.py examples. I am getting the error 
message below regardless of which backend I use. Am I doing something wrong 
in the configuration?
Thanks
Eli
C:\Python23\Lib\site-packages\matplotlib>python subplot_demo.py
Traceback (most recent call last):
 File "subplot_demo.py", line 1, in ?
 from matplotlib.matlab import *
 File "C:\Python23\Lib\site-packages\matplotlib\matlab.py", line 142, in ?
 from axes import Axes
 File "C:\Python23\Lib\site-packages\matplotlib\axes.py", line 10, in ?
 from axis import XTick, YTick, XAxis, YAxis
 File "C:\Python23\Lib\site-packages\matplotlib\axis.py", line 20, in ?
 from font_manager import FontProperties
 File "C:\Python23\Lib\site-packages\matplotlib\font_manager.py", line 
918, in ?
 fontManager = FontManager()
 File "C:\Python23\Lib\site-packages\matplotlib\font_manager.py", line 
763, in __init__
 self.ttfdict = createFontDict(self.ttffiles)
 File "C:\Python23\Lib\site-packages\matplotlib\font_manager.py", line 
410, in createFontDict
 prop = ttfFontProperty(font)
 File "C:\Python23\Lib\site-packages\matplotlib\font_manager.py", line 
224, in ttfFontProperty
 sfnt2 = font.get_sfnt_name(2)
AttributeError: get_sfnt_name

For a start, you can replace 'PS' with 'SVG' in pstest.py in the
examples. Otherwise, any of the examples that don't have mathtext or
images should work. Just add
import matplotlib
matplotlib.use('SVG')
at the beginning and then
savefig('myfilename')
at the end.
jared
On Fri, 2004年07月09日 at 06:59, Flavio Codeco Coelho wrote:
> So...
>=20
> can we type=20
>=20
> matplotlib.use('SVG')=20
>=20
> and start playing with it or what?
>=20
> what about some examples?;)
>=20
>=20
>=20
>=20
> Fl=C3=A1vio Code=C3=A7o Coelho,
> PhD
>=20
> Programa de Computa=C3=A7=C3=A3o
> Cient=C3=ADfica
>=20
> Funda=C3=A7=C3=A3o Oswaldo Cruz
>=20
> Rio de Janeiro --
> Brasil
>=20
>=20
>=20
>=20
>=20
>=20
> ______________________________________________________________________

John Hunter wrote:
>I hesitate to call this a bug. I have been hard at work on the
>matplotlib.mind_reading module but it is incomplete. 
> 
>
c'mon John... it's about time you this thing done! );
-- 
Peter Groszkowski Gemini Observatory
Tel: +1 808 974-2509 670 N. A'ohoku Place
Fax: +1 808 935-9235 Hilo, Hawai'i 96720, USA

Hi - By passing the list of lines, the problem is solved, thanks! It
is the case though that the intelligent guess does fail when you do an
'errorbar plot' sequence but not when you do a 'plot errorbar'
sequence. In this first case, the legend associated with the 'plot'
is always a straight black line no matter what the requested format.
Thanks for the help,
/\
ps. am using matplotlib-0.60.1

 becker> however the legend is incorrect/incomplete if i change the order the
 becker> plots are done
> sp = matlib.subplot(111)
> ctio = sp.errorbar(jd, f, yerr=df, fmt='bo', ecolor='k', capsize=1)
> mlfit = sp.plot(mljd, mlflux, 'r-')
> snfit = sp.plot(mljd, mlflux, 'g-')
> sp.legend( ('ML fit', 'SN fit', 'CTIO'), loc='upper right')
I hesitate to call this a bug. I have been hard at work on the
matplotlib.mind_reading module but it is incomplete. That is,
matplotlib does not know what you want the legend to look like, you
have to tell it.
It does try to make an intelligent guess if you don't tell it, and it
guesses by assuming the order the labels you give is the same as the
order of the plot commands. If you want otherwise, you need to pass
it an explicit list of line or patch handles. Something like
 # errorbar returns two values, the plot line and the list of
 # errorbar lines
 ctio, errlines = sp.errorbar(jd, f, yerr=df, fmt='bo', ecolor='k', capsize=1)
 # note the comma in the return value. plot returns *a list of
 # lines*. Since you have a length one list, I'm extracting the
 # first element of the list using tuple unpacking
 mlfit, = sp.plot(mljd, mlflux, 'r-')
 snfit, = sp.plot(mljd, mlflux, 'g-')
 # by passing a list of lines, you can control the order
 sp.legend( (mlfit, snfit, ctio), ('ML fit', 'SN fit', 'CTIO'), loc='upper right')
See http://matplotlib.sf.net/examples/legend_demo2.py for an example;
all the examples can also be found in the examples subdirectory of the
matplotlib src distribution, *.tar.gz or *.zip.
Hope this helps,
JDH

>>>>> "Jeffrey" == Jeffrey Jones <Jef...@gs...> writes:
 Jeffrey> I am preparing to install matplotlib on a Mac OS X system
 Jeffrey> (10.3.4). The installation page says I need to install
 Jeffrey> freetype2.
 Jeffrey> I already have Apple's X11 and X11sdk. I noticed that
 Jeffrey> /usr/X11R6/lib contains libfreetype.a and
 Jeffrey> libfreetype.dylib (the latter is a pointer to
 Jeffrey> libfreetype.6.3.dylib).
 Jeffrey> Is this what I need? If so, how do I tell matplotlib to
 Jeffrey> use it?
In setuptext.py, there is a dictionary called basedirs, whose keys are
your sys.platform and values are a list of base dirs to search for
includes. libraries etc. That is how you set it.
 Jeffrey> Also, if this is the same thing, any idea what "6.3"
 Jeffrey> means in libfreetype.6.3.dylib? The tar file I got from
 Jeffrey> the freetype web site is named freetype-2.1.9.tar, so it
 Jeffrey> doesn't appear to make sense as a version number.
I think you'll have the greatest chance of success if you compile
zlib, libpng and freetype2 from src and install them to /usr/local,
and then make sure /usr/local is in your basedirs path, preferably
before any fink stuff. If you do that, and make sure you have a
working X11 and GUI backend installed (if you want a GUI, you'll need
a working Tkinter, pygtk or wxpython), then your install should go
fairly smoothly).
There have been a number of posts on the users and development mailing
lists posting build notes for OS X. Unfortunately, the sourceforge
mailing list search capability is about the worst I've ever seen.
Here's one link -
http://sourceforge.net/mailarchive/message.php?msg_id=8799801.
I have an darwin laptop and managed to get every backend installed,
including gtkagg. I had to install all the gtk components from src,
piece-by-piece. I initially used fink but kept getting stuck at
various points (gtk, scipy) and eventually gave up and went old
school, doing everything from src. If you are a fink user and don't
need the latest features, I believe there is a matplotlib fink
package; google for matplotlib fink.
Good luck, please post your compile notes with success and complaints
otherwise.
JDH

>>>>> "danny" == danny shevitz <dan...@ya...> writes:
 danny> Howdy, Is there an easy way to turn off the minor gridlines
 danny> in a (semi)log plot? I just want the ones that are at the
 danny> powers of ten.
Not currently.
Technically, there are not major and minor ticks for the default log
tick locator and formatter, there are only major ticks and the decades
are labeled. It is on my list of things to do to break these into
major and minor ticks. At that point it will be fairly easy to turn
on and off the grids separately for the major and minor ticks.
If you want to look into this, the relevant code is LogLocator and
LogFormatter in matplotlib.ticker.py. It should be fairly easy to
modify this code to support major and minor ticks separately.
JDH

It's bothered me a little that I couldn't build an rpm of matplotlib, so I resolved to work it out this time. These are the issues I had:
setup.py imports gtk while checking backend compatablity. This fails because the gtk module won't load if the DISPLAY variable is not set. The trouble lies in /usr/lib/rpm/redhat/macros on my system, and commenting out the unset DISPLAY lines does the trick. That whole section of the file is identified as slightly superfluous by the comments, if I'm reading them right. I'm not very handy with rpm macros.
A known distutils issue causes the procedure to complain all the way at the end, about there being the wrong number of files in the rpm. There are three ways to fix it that I found:
1) Ignore it. The rpm is built, but not copied into the dist directory. Get it from build/bdist.linux-i686/rpm/RPMS, or as appropriate for your platform.
2) Apply a distutils patch: https://sourceforge.net/tracker/?func=detail&atid=305470&aid=731328&group_id=5470. I haven't actually tried it.
3) Add this line to your ~/.rpmmacros: %debug_package %{nil}. You will get a much larger rpm. It looks like the binaries have debugging information included.
Chris Fuller

What's new in matplotlib-0.60.1
 * figure images (pixel-by-pixel, not resampled) with the figimage
 command. Multiple figure images (ie mosaics) with alpha blending
 are supported. See
 http://matplotlib.sf.net/examples/figimage_demo.py
 * multiple axes images with imshow using alpha blending. See
 http://matplotlib.sf.net/screenshots.html#layer_images
 * unified color limit and color mapping arguments to pcolor, scatter,
 imshow and figimage. Interactive control of colormap and color
 scaling with new matplotlib.matlab commands jet, gray and clim.
 New matplotlib rc parameters for default image params. image
 origin can be upper or lower - see
 http://matplotlib.sf.net/examples/image_origin.py
 * colorbar -
 http://matplotlib.sf.net/matplotlib.matlab.html#-colorbar - now
 works with imshow, pcolor, and scatter
 * new 'draw' command to redraw the figure - use this in place of
 multiple calls to show. This is equivalent to doing
 get_current_fig_manager().canvas.draw(), but takes less typing :-)
 * support for py2exe - see
 http://matplotlib.sf.net/py2exe_examples.zip
 * New finance demo shows off many of the features of matplotlib - see
 screenshot at
 http://matplotlib.sf.net/screenshots.html#finance_work2
 * new matplotlib.matlab command 'rc' for dynamic control of rc
 parameters. See
 http://matplotlib.sf.net/matplotlib.matlab.html#-rc and example
 http://matplotlib.sf.net/examples/customize_rc.py
 * Andrew Straw submitted a dynamic_image example. The wx version is
 still in progress and has some flicker problems, but the gtk version
 is pretty cool - 
 http://matplotlib.sf.net/examples/dynamic_image_gtkagg.py
 * Bug fixes: dynamic_demo_wx, figure legends, memory leaks, axis
 scaling bug related to singleton plots, mathtext bug for '6', some
 numarray bug workarounds
See http://matplotlib.sf.net/CHANGELOG for details
Downloads at http://sourceforge.net/projects/matplotlib
Enjoy!
JDH

You can always do this by adding:
SetEnv PYTHONPATH /locations/of/packages/want/to/import/
to your apache config file.
-- 
Peter Groszkowski Gemini Observatory
Tel: +1 808 974-2509 670 N. A'ohoku Place
Fax: +1 808 935-9235 Hilo, Hawai'i 96720, USA
Rodrigo Caballero wrote:
> I did some python CGI scripting at one point, and I needed to do 
> something like
>
> os.environ['MATPLOTLIBDATA'] = '/where/matplotlib/lives'
>
> before the matplotlib import ... hope that helps,
>
> rodrigo
>
> ---
>
> Rodrigo Caballero Augi (http://geosci.uchicago.edu/~rca)
> Research Associate
> Department of the Geophysical Sciences, University of Chicago
> 5734 South Ellis Avenue, Chicago, IL 60637, USA.
>
>
> On Thursday, July 8, 2004, at 06:26 PM, Jonathan Hanson wrote:
>
>> I'm having issues importing matplotlib into my python script, but 
>> only when runing under PHP.
>>
>> The line:
>> from matplotlib import *
>>
>> causes my .py script to return an error code "1" when being called 
>> from inside a PHP script. However, the script runs just fine when 
>> called from the command line.
>>
>> If i comment out the above line and all the matplotlib-related 
>> commands in my script, it will run just fine (but without plots of 
>> course). But the include command alone is enough to cause an error 1 
>> return.
>>
>> I have been through every documentation source I can find, I've tried 
>> every variation of import i can think of, and I've come up with a big 
>> fat 0. I've tried something like:
>> sys.path.append("/usr/lib/python2.3/site-packages/matplotlib")
>> after the sys import and before the matplotlib import thinking there 
>> was a path issue with the apache user, and got jack squat out of that.
>>
>> Has anyone else had issues calling python scripts from inside PHP? 
>> All my other imports below:
>> # Module Imports
>> from optparse import OptionParser
>> import sys
>> #from matplotlib import *
>> from os import listdir
>> from string import split
>> from array import array
>> from time import time#, ctime
>>
>> work just fine. I've been on this for 3 solid days, someone either 
>> shoot me or help me! Thanks.
>>
>>
>> -------------------------------------------------------
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>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>
>
>
> -------------------------------------------------------
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> Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital 
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hi - the following works ok...
> sp = matlib.subplot(111)
> mlfit = sp.plot(mljd, mlflux, 'r-')
> snfit = sp.plot(mljd, mlflux, 'g-')
> ctio = sp.errorbar(jd, f, yerr=df, fmt='bo', ecolor='k', capsize=1)
> sp.legend( ('ML fit', 'SN fit', 'CTIO'), loc='upper right')
however the legend is incorrect/incomplete if i change the order the
plots are done
> sp = matlib.subplot(111)
> ctio = sp.errorbar(jd, f, yerr=df, fmt='bo', ecolor='k', capsize=1)
> mlfit = sp.plot(mljd, mlflux, 'r-')
> snfit = sp.plot(mljd, mlflux, 'g-')
> sp.legend( ('ML fit', 'SN fit', 'CTIO'), loc='upper right')
thanks,
andy

I did some python CGI scripting at one point, and I needed to do 
something like
os.environ['MATPLOTLIBDATA'] = '/where/matplotlib/lives'
before the matplotlib import ... hope that helps,
rodrigo
---
Rodrigo Caballero Augi (http://geosci.uchicago.edu/~rca)
Research Associate
Department of the Geophysical Sciences, University of Chicago
5734 South Ellis Avenue, Chicago, IL 60637, USA.
On Thursday, July 8, 2004, at 06:26 PM, Jonathan Hanson wrote:
> I'm having issues importing matplotlib into my python script, but only 
> when runing under PHP.
>
> The line:
> from matplotlib import *
>
> causes my .py script to return an error code "1" when being called 
> from inside a PHP script. However, the script runs just fine when 
> called from the command line.
>
> If i comment out the above line and all the matplotlib-related 
> commands in my script, it will run just fine (but without plots of 
> course). But the include command alone is enough to cause an error 1 
> return.
>
> I have been through every documentation source I can find, I've tried 
> every variation of import i can think of, and I've come up with a big 
> fat 0. I've tried something like:
> sys.path.append("/usr/lib/python2.3/site-packages/matplotlib")
> after the sys import and before the matplotlib import thinking there 
> was a path issue with the apache user, and got jack squat out of that.
>
> Has anyone else had issues calling python scripts from inside PHP? 
> All my other imports below:
> # Module Imports
> from optparse import OptionParser
> import sys
> #from matplotlib import *
> from os import listdir
> from string import split
> from array import array
> from time import time#, ctime
>
> work just fine. I've been on this for 3 solid days, someone either 
> shoot me or help me! Thanks.
>
>
> -------------------------------------------------------
> This SF.Net email sponsored by Black Hat Briefings & Training.
> Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital 
> self defense, top technical experts, no vendor pitches, unmatched 
> networking opportunities. Visit www.blackhat.com
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>

My guess would be that it is a permission issue from running udner 
apache.. did you look at your apache error log files? What os are you 
using? Can you run this script under apache directly (as cgi say) 
instead of calling it throught php? I remember that I had to manually 
change some permissions on some of the matplotlib (or maybe the font 
packages that come with it) stuff to get things running...
Peter
Jonathan Hanson wrote:
> I'm having issues importing matplotlib into my python script, but only 
> when runing under PHP.
>
> The line:
> from matplotlib import *
>
> causes my .py script to return an error code "1" when being called 
> from inside a PHP script. However, the script runs just fine when 
> called from the command line.
>
> If i comment out the above line and all the matplotlib-related 
> commands in my script, it will run just fine (but without plots of 
> course). But the include command alone is enough to cause an error 1 
> return.
>
> I have been through every documentation source I can find, I've tried 
> every variation of import i can think of, and I've come up with a big 
> fat 0. I've tried something like:
> sys.path.append("/usr/lib/python2.3/site-packages/matplotlib")
> after the sys import and before the matplotlib import thinking there 
> was a path issue with the apache user, and got jack squat out of that.
>
> Has anyone else had issues calling python scripts from inside PHP? 
> All my other imports below:
> # Module Imports
> from optparse import OptionParser
> import sys
> #from matplotlib import *
> from os import listdir
> from string import split
> from array import array
> from time import time#, ctime
>
> work just fine. I've been on this for 3 solid days, someone either 
> shoot me or help me! Thanks.
>
>
> -------------------------------------------------------
> This SF.Net email sponsored by Black Hat Briefings & Training.
> Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital 
> self defense, top technical experts, no vendor pitches, unmatched 
> networking opportunities. Visit www.blackhat.com
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users