matplotlib-users Mailing List for matplotlib (Page 2)

On Friday 26 November 2004 12:04 pm, John Hunter wrote:
> >>>>> "Jouni" =3D=3D Jouni K Sepp=E4nen <jk...@ik...> writes:
>
>     Jouni> Hi, One thing that I really like about Matlab's handle
>     Jouni> graphics system is that it is self-documenting: if I do
>     Jouni> h=3Dplot(...), I can query the current values of all
>     Jouni> properties with get:
>
> This is a very useful feature in matplotlib.  Thanks for your patch.
> I ended up implementing this functionality, but using a different
> approach than your query methods. =20

I updating from cvs now, I can't wait to try this out! I used this in Matla=
b=20
all the time.

=2D-=20

Darren

>>>>> "Jouni" =3D=3D Jouni K Sepp=E4nen <jk...@ik...> writes:

    Jouni> Hi, One thing that I really like about Matlab's handle
    Jouni> graphics system is that it is self-documenting: if I do
    Jouni> h=3Dplot(...), I can query the current values of all
    Jouni> properties with get:

This is a very useful feature in matplotlib.  Thanks for your patch.
I ended up implementing this functionality, but using a different
approach than your query methods.  Instead, I added formatted strings
to the doc strings of each setter that describe what that function
accepts, eg

    def set_linestyle(self, s):
        """
Set the linestyle of the line

ACCEPTS: [ '-' | '--' | '-.' | ':' | 'steps' | 'None' ]
        """

set now parses this information and uses it to display the
properties.  In the CVS version of matplotlib, you can get this
information, as in matlab, with

# report accepts info on all properties
set(line)

# report accepts info on linestyle property
set(line, 'linestyle')

# print the value of all properties
get(line)

# print the value of the linestyle property
get(line, 'linestyle')

Very nice!  See the files examples/set_and_get.py in CVS.  Here is
some sample output

1 >>> lines =3D plot([1,2,3])

2 >>> set(lines)
    alpha: float
    antialiased or aa: [True | False]
    clip_box: a matplotlib.transform.Bbox instance
    clip_on: [True | False]
    color or c: any matplotlib color - see help(colors)
    dashes: sequence of on/off ink in points
    data: (array xdata, array ydata)
    data_clipping: [True | False]
    figure: a matplotlib.figure.Figure instance
    label: any string
    linestyle or ls: [ '-' | '--' | '-.' | ':' | 'steps' | 'None' ]
    linewidth or lw: float
    lod: [True | False]
    marker: [ '+' | ',' | '.' | '1' | '2' | '3' | '4' | '<' | '>' |
    'D' | 'H' | '^' | '_' | 'd' | 'h' | 'o' | 'p' | 's' | 'v' | 'x' |
    '|' ]
    markeredgecolor or mec: any matplotlib color - see help(colors)
    markeredgewidth or mew: float
    markerfacecolor or mfc: any matplotlib color - see help(colors)
    markersize or ms: float
    transform: a matplotlib.transform transformation instance
    vertical_offset: DEPRECATED
    visible: [True | False]
    xclip: (xmin, xmax)
    xdata: array
    yclip: (ymin, ymax)
    ydata: array

3 >>> .

Thanks for the suggestion!

JDH

>>>>> "Transier," == Transier, Frederik <fre...@sa...> writes:

    Frederik> Hello, while I was trying to build the matplotlib 0.64
    Frederik> with python 2.4 on my win xp machine

    Frederik> a lot of errors occurred. Has anyone managed to install
    Frederik> it under these conditions?

    Frederik> Or is there any location I can download the binaries
    Frederik> for python 2.4 and win xp?

    Frederik> Any help would be appreciated.

Building on windows is a pain.  I'll try to include a python2.4rc1
installer with the next release, possibly next week.  If you need
something sooner, you'll have to post some more information to the
list.  Have you read the instructions for building win32 in
setupext.py, and downloaded the win32_static file from the matplotlib
web site that is pointed to in setupext?

JDH
 

>>>>> "Darrell" == Darrell Silver <da...@cl...> writes:

    Darrell> Hi, first time user, first time installer...

    Darrell> Is there a howto for matplotlib installation on redhat
    Darrell> 7.3/as2.1 & as3.0?

    Darrell> I'm trying to install matplotlib on these platforms and
    Darrell> am running into a seemingly endless list of dependancies
    Darrell> for python2.2, numarray:

    Darrell> just on the 7.3 side, - freetype >= 2.1.7 is needed, but
    Darrell> rh has 2.0.9-2.  - pygtk >= 1.99.16 needed, rh has
    Darrell> 1.99.8-7.  - pygtk 2.2.0 needs glib >= 2.2.0, redhat has
    Darrell> 1.2.10-5, - pygtk 1.99.16 compiles, but I get error
    Darrell> "ImportError: /usr/lib/libpangoxft-1.0.so.0 undefinded
    Darrell> symbol: FT_Seek_Stream", which I haven't tracked down
    Darrell> just yet...  - the line "inf = infty = Infinity =
    Darrell> _ieee.inf" in na_imports.py fails to find 'inf' in
    Darrell> '_ieee', but commenting it out works fine.  - While the
    Darrell> install webpage says I only need freetype,libpng,zlib to
    Darrell> compile, I get runtime complaints on import of
    Darrell> matplotlib.matlab * (running simple_plot.py) about
    Darrell> missing image libraries if I don't turn the BUILD_IMAGE
    Darrell> flag on.

I have compiled matplotlib on 7.3 but it's been a while.  Rather than
upgrading to the latest pygtk, which will require a major upgrade of
all your gtk libs and their dependencies, try getting pygtk-1.99.16.
Since you already have pygtk-1.99.x, I think you should be able to
compile this.  And install freetype 2.1.7 or later, and numarray 1.1
or later, and try again.  With luck, with these packages you'll
get much farther.  

I suggest you try to compile pygtk with --enable-thread and
--enable-numpy

When building matplotlib, set the following in setup.py

BUILD_IMAGE     = 1
BUILD_AGG       = 1
BUILD_GTKAGG    = 1
BUILD_TKAGG     = 0
BUILD_WINDOWING = 0

If you can't build, please post the build output to the list and we'll
take it from there.

Good luck!
JDH


    Darrell> This is all way too difficult me as I'm not looking
    Darrell> forward to upgrading so many packages across our
    Darrell> production machines...am I missing something obvious?
    Darrell> Perhaps an older version of matplotlib known to work on
    Darrell> this redhat?  I'm just using it for simple time-series
    Darrell> plots, real-time and to some file (png, gif, ps, pdf...).


    Darrell> thanks in advance for any help,

    Darrell> Darrell



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>>>>> "christophe" == christophe grimault <chr...@no...> writes:


    christophe> The import of the numeric version of the _transforms
    christophe> module, _nc_transforms, failed.  This is either
    christophe> because numeric was unavailable when matplotlib was
    christophe> compiled, or because a dependency of _nc_transforms
    christophe> could not be satisfied.  If it appears that
    christophe> _nc_transforms was not built, make sure you have a
    christophe> working copy of numeric and then re-install
    christophe> matplotlib. Otherwise, the following traceback gives
    christophe> more details:

Try rm -rf ing your build directory and your site-packages/matplotlib
directory and do a clean rebuild and reinstall.  We've seen a lot of
problems not too different from yours when installing recent versions
of matplotlib over older versions.  If you're still encountering
troubles, post back and we'll try something different.

    christophe> ImportError:
    christophe> /usr/local/lib/python2.3/site-packages/matplotlib/_nc_transforms.so:
    christophe> undefined symbol: _ZNSs4_Rep20_S_empty_rep_storageE

This is a linker error, I don't think changing your include paths will
help.

    christophe> I tried many things in the setupext.py. Freetype is
    christophe> correctly installed and Numeric is in
    christophe> /opt/Numeric23.1. I added this to the
    christophe> script.... because the way it appends include/lib path
    christophe> seems a little buggy to me.

    christophe> I also tried other things. I still get the same error
    christophe> message. I'm stuck ! Has anyone encoutered this
    christophe> problem ?  solved it ? Shall i install a newer version
    christophe> of Numeric ? In an other place than /opt ?

matplotlib certainly works with Numeric 23.1.  I would advise you to
upgrade to the latest Numeric because many bugs have been fixed since
23.1, but it won't stop matplotlib from working.  

JDH

>>>>> "Daniel" == Daniel Newton <da...@ne...> writes:

    Daniel> Hi, I am trying to make a legend transparent (using
    Daniel> GTKAgg) as sometimes it is quite big an obscures part of
    Daniel> my graphs.

    Daniel> I have tryed this with no luck: l = figure.legend(lines,
    Daniel> names, legend) l.set_alpha(.5)

    Daniel> is this possible?

Is it the entire legend you want to make transparent, or simply the
rectangular background?  For the latter, you need to set the alpha on
the legend "frame".  You have two options here

leg = legend(blah, blah)
leg.draw_frame(False)  # turn it off entirely

or 

frame = leg.get_frame()
frame.set_alpha(0.5)   # make it semi-transparent

See http://matplotlib.sf.net/examples/legend_demo.py for an example of
getting handles to all the lines, patches and texts in the legend,
whose properties you can set independently.

There has been a discussion on whether it would be desirable for a set
call on an object to propagate to all the objects it contains.  Ie,
would it be a good thing to be able to do

set(leg, alpha=0.5) 

and have this propogate to the legend frame, lones, patches, and text
instances.  Or is the current setup where you control each of these
objects independently preferable?

JDH

Hi all,

I've successfully used version 0.52. Yesterday I installed v0.64 on my 
RH9 linux box. The build and install went OK. However, when I try to 
play with it, I get:

The import of the numeric version of the _transforms module, 
_nc_transforms, failed.
This is either because numeric was unavailable when matplotlib was compiled,
or because a dependency of _nc_transforms could not be satisfied.
If it appears that _nc_transforms was not built,  make sure you have a 
working copy of
numeric and then re-install matplotlib. Otherwise, the following 
traceback gives more details:

Traceback (most recent call last):
....
    from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as 
FigureCanvas
  File 
"/usr/local/lib/python2.3/site-packages/matplotlib/backends/__init__.py", 
line 20, in ?
    globals(),locals(),[backend_name])
  File 
"/usr/local/lib/python2.3/site-packages/matplotlib/backends/backend_wxagg.py", 
line 18, in ?
    from backend_agg import FigureCanvasAgg
  File 
"/usr/local/lib/python2.3/site-packages/matplotlib/backends/backend_agg.py", 
line 78, in ?
    from matplotlib.backend_bases import RendererBase,\
  File 
"/usr/local/lib/python2.3/site-packages/matplotlib/backend_bases.py", 
line 13, in ?
    from patches import Rectangle
  File "/usr/local/lib/python2.3/site-packages/matplotlib/patches.py", 
line 5, in ?
    from artist import Artist
  File "/usr/local/lib/python2.3/site-packages/matplotlib/artist.py", 
line 4, in ?
    from transforms import identity_transform
  File 
"/usr/local/lib/python2.3/site-packages/matplotlib/transforms.py", line 
188, in ?
    from _transforms import Value, Point, Interval, Bbox, Affine
  File 
"/usr/local/lib/python2.3/site-packages/matplotlib/_transforms.py", line 
11, in ?
    from matplotlib._nc_transforms import *
ImportError: 
/usr/local/lib/python2.3/site-packages/matplotlib/_nc_transforms.so: 
undefined symbol: _ZNSs4_Rep20_S_empty_rep_storageE

I tried many things in the setupext.py. Freetype is correctly installed 
and Numeric is in /opt/Numeric23.1. I added this to the script.... 
because the way it appends include/lib path seems a little buggy to me.

def add_ft2font_flags(module):
    'Add the module flags to build extensions which use gd'
    ....
    module.include_dirs.append('/usr/local/include/freetype2/freetype')
    ....
and
def add_agg_flags(module):
    'Add the module flags to build extensions which use agg'

    # before adding the freetype flags since -z comes later
    module.libraries.append('png')
    module.libraries.append('z')
    add_base_flags(module)
    module.include_dirs.extend(['src','agg22/include', '.'])
    module.include_dirs.append('/opt/Numeric-23.1/Include')
    # put these later for correct link order
    module.libraries.extend(['stdc++', 'm'])

I also tried other things. I still get the same error message. I'm stuck 
! Has anyone encoutered this problem ?
solved it ? Shall i install a newer version of Numeric ? In an other 
place than /opt ?

Any help would be geatly appreciated !

Christophe

Hi,

I am trying to make a legend transparent (using GTKAgg) as sometimes it 
is quite big an obscures part of my graphs.

I have tryed this with no luck:
        l = figure.legend(lines, names, legend)
        l.set_alpha(.5)

is this possible?

Thanks
Dan

Hi,

first time user, first time installer...

Is there a howto for matplotlib installation on redhat 7.3/as2.1 & as3.0?

I'm trying to install matplotlib on these platforms and am running into 
a seemingly endless list of dependancies for python2.2, numarray:

just on the 7.3 side,
  - freetype >= 2.1.7 is needed, but rh has 2.0.9-2.
  - pygtk >= 1.99.16 needed, rh has 1.99.8-7.
  - pygtk 2.2.0 needs glib >= 2.2.0, redhat has 1.2.10-5,
  - pygtk 1.99.16 compiles, but I get error "ImportError: 
/usr/lib/libpangoxft-1.0.so.0 undefinded symbol: FT_Seek_Stream", which 
I haven't tracked down just yet...
  - the line "inf = infty = Infinity = _ieee.inf" in na_imports.py fails 
to find 'inf' in '_ieee', but commenting it out works fine.
  - While the install webpage says I only need freetype,libpng,zlib to 
compile, I get runtime complaints on import of matplotlib.matlab * 
(running simple_plot.py) about missing image libraries if I don't turn 
the BUILD_IMAGE flag on.


This is all way too difficult me as I'm not looking forward to upgrading 
so many packages across our production machines...am I missing something 
obvious?  Perhaps an older version of matplotlib known to work on this 
redhat?  I'm just using it for simple time-series plots, real-time and 
to some file (png, gif, ps, pdf...).


thanks in advance for any help,

Darrell

>>>>> "Jeremy" == Jeremy Sanders <js...@as...> writes:

    Jeremy> Hi - I installed matplotlib into an alternative directory
    Jeremy> (using --home=/usr/local/python/python-2.3-FC2).

    Jeremy> I edited my .matplotlibrc file to set the data directory
    Jeremy> to /usr/local/python/python-2.3-FC2/share/matplotlib, but
    Jeremy> it doesn't seem to work:

I assume /usr/local/python/python-2.3-FC2/share/matplotlib exists and
contains, for example, the *.ttf, *.afm, etc files ?

Are you sure the rc file you are editing is being found and loaded.
Where are you placing the rc file?  The search order for rc is

     * current working dir
     * environ var MATPLOTLIBRC
     * HOME/.matplotlibrc
     * MATPLOTLIBDATA/.matplotlibrc

    Jeremy> (BTW the bottom appears to be a bug - report_error should
    Jeremy> be given 3 arguments)

Yes, this is fixed in CVS, thanks.

    Jeremy> I've also tried specifiying the
    Jeremy> /usr/local/python/python-2.3-FC2/ and
    Jeremy> /usr/local/python/python-2.3-FC2/share, but neither work.

    Jeremy> Is there any reason why the location of the data directory
    Jeremy> can't be put into matplotlib when it is installed? This
    Jeremy> would be much more convenient. It would also be nice if
    Jeremy> matplotlib can find the location of .matplotlibrc if there
    Jeremy> isn't one in the user's directory. When sing an alternate
    Jeremy> installation directory, it can't find one at the moment.

Sorry for all your troubles.  There are a couple of additional hints
that may help you get your environment configured properly.  First,
run a test script, eg examples/simple_plot.py with the
--verbose-helpful flag.  This will give you information at runtime
about what resources matplotlib is loading, eg what data path
matplotlib is using, what rc file etc.

As indicated above, there are two additional things you can do to help
matplotlib find it's data files.  One, you can place an rc file in
your working directory if you don't want to use a home directory for
it.  Secondly, you can set the environment variable MATPLOTLIBDATA as
described at http://matplotlib.sourceforge.net/installing.html.

Hopefully with some combination of the extra ways to point matplotlib
to its data files and the extra diagnostic information from the
verbose flag, you can get this working.

Assuming /usr/local/python/python-2.3-FC2/share/matplotlib exists and
contains the files you referred to above, this is the dir that you
would set MATPLOTLIBDATA to point to.

If you find the magic combination, please post or for future googlers.
Or if you have any suggestions for documentation improvement let me
know.

JDH

Hi -

I installed matplotlib into an alternative directory (using 
--home=/usr/local/python/python-2.3-FC2).

I edited my .matplotlibrc file to set the data directory to 
/usr/local/python/python-2.3-FC2/share/matplotlib, but it doesn't seem to 
work:

   File "/usr/local/python/python-2.3-FC2//lib/python/matplotlib/backends/__init__.py", line 20, in ?
     globals(),locals(),[backend_name])
   File "/usr/local/python/python-2.3-FC2//lib/python/matplotlib/backends/backend_gtkagg.py", line 9, in ?
     from matplotlib.figure import Figure
   File "/usr/local/python/python-2.3-FC2//lib/python/matplotlib/figure.py", line 3, in ?
     from axes import Axes, Subplot, PolarSubplot, PolarAxes
   File "/usr/local/python/python-2.3-FC2//lib/python/matplotlib/axes.py", line 10, in ?
     from axis import XAxis, YAxis
   File "/usr/local/python/python-2.3-FC2//lib/python/matplotlib/axis.py", line 20, in ?
     from font_manager import FontProperties
   File "/usr/local/python/python-2.3-FC2//lib/python/matplotlib/font_manager.py", line 942, in ?
     fontManager = FontManager()
   File "/usr/local/python/python-2.3-FC2//lib/python/matplotlib/font_manager.py", line 791, in __init__
     rebuild()
   File "/usr/local/python/python-2.3-FC2//lib/python/matplotlib/font_manager.py", line 779, in rebuild
     self.ttfdict = createFontDict(self.ttffiles)
   File "/usr/local/python/python-2.3-FC2//lib/python/matplotlib/font_manager.py", line 411, in createFontDict
     verbose.report_error("Could not open font file", fpath)
TypeError: report_error() takes exactly 2 arguments (3 given)

(BTW the bottom appears to be a bug - report_error should be given 3 
arguments)

I've also tried specifiying the /usr/local/python/python-2.3-FC2/ and 
/usr/local/python/python-2.3-FC2/share, but neither work.

Is there any reason why the location of the data directory can't be put 
into matplotlib when it is installed? This would be much more convenient. 
It would also be nice if matplotlib can find the location of .matplotlibrc 
if there isn't one in the user's directory. When sing an alternate 
installation directory, it can't find one at the moment.

Jeremy

-- 
Jeremy Sanders <js...@as...>   http://www-xray.ast.cam.ac.uk/~jss/
X-Ray Group, Institute of Astronomy, University of Cambridge, UK.
Public Key Server PGP Key ID: E1AAE053

Hello,

 

while I was trying to build the matplotlib 0.64 with python 2.4 on my win xp machine

a lot of errors occurred. Has anyone managed to install it under these conditions?

Or is there any location I can download the binaries for python 2.4 and win xp?

 

Any help would be appreciated.

 

Thanks,

Frederik

 

On Mon, 2004-11-22 at 13:48, John Hunter wrote:
> >>>>> "Gary" == Gary  <pa...@in...> writes:
> 
>     Gary> This application has requested the Runtime to terminate it
>     Gary> in an unusual way.  Please contact the application's support
>     Gary> team for more information.
> 
>     Gary> C:\Python23\Lib\site-packages\matplotlib\examples>
> 
> Hi Gary, the good news is that I could replicate the bug on XP and the
> better news is that I could fix it :-)

I looked at this but couldn't solve it... way to go John! 

Cheers,
Todd

>>>>> "Gary" == Gary  <pa...@in...> writes:

    Gary> This application has requested the Runtime to terminate it
    Gary> in an unusual way.  Please contact the application's support
    Gary> team for more information.

    Gary> C:\Python23\Lib\site-packages\matplotlib\examples>

Hi Gary, the good news is that I could replicate the bug on XP and the
better news is that I could fix it :-)

It looks like a bug in the anim_tk script and not in matplotlib
proper.  Basically, anim_tk never calls the tk mainloop.  Why this
works under linux and not windows is not clear to me.  The trick is to
start the tk mainloop and use the tk after handler to run a command
after x milliseconds.  So I rewrote the example to do the animation in
a loop, and used the after command to start this function after the
mainloop is launched.

If you have any additional trouble, you may want to try turning off 

  tk.window_focus   : False    # Maintain shell focus for TkAgg

in your rc file.

Hope this helps!
JDH

#!/usr/bin/env python2.3

import matplotlib
matplotlib.use('TkAgg')
import matplotlib.matlab

#import Tkinter as Tk
import matplotlib.numerix as numerix
fig = matplotlib.matlab.figure(1)
ind = numerix.arange(60)

x_tmp=[]
for i in range(100):
    x_tmp.append(numerix.sin((ind+i)*numerix.pi/15.0))

X=numerix.array(x_tmp)


lines = matplotlib.matlab.plot(X[:,0],'o')

manager = matplotlib.matlab.get_current_fig_manager()

def updatefig(*args):
    updatefig.count += 1
    lines[0].set_ydata(X[:,updatefig.count%60])
    manager.canvas.draw()
    return updatefig.count
updatefig.count=-1

def run(*args):

    import time
    tstart = time.time()
    while 1:
        cnt = updatefig()
        if cnt==100: break
        print 'elapsed', 100.0/(time.time() - tstart)
    
import Tkinter as Tk
manager.window.after(10, run)
manager.show()
Tk.mainloop()

John Hunter wrote:

>>>>>>"Gary" == Gary  <pa...@in...> writes:
>>>>>>            
>>>>>>
>
>    Gary> Thanks ... so it's either me or WinXP.  I gave it a try on
>    Gary> my other WinXP machine.  Same thing.  No dice.
>
>    Gary> Can someone confirm that anim_tk.py runs (or doesn't) on
>    Gary> WinXP / matplotlib 0.64 ??
>
>I can't test this under windows XP right now (I can tomorrow).  But
>how are you running your script (double clicknig, from a shell, from
>within an IDE?
>
>What does 
>
>  c:> python anim_tk.py --verbose-helpful report?
>
>I searched the matplotlib-users archives at
>http://sourceforge.net/mailarchive/forum.php?forum_id=33405 for
>PyEval_RestoreThread.  This has cropped up a few times before on
>windows (including a September post from you also on anim_tk which did
>not appear to be resolved).  
>
>My usual first guess when people get this message is that they are
>trying to run matplotlib from within a GUI IDE and are getting an IDE
>conflict, which is why I asked you to test from the command shell.
>Let me know the results of the tests above, because I'd like to track
>this one down.
>
>JDH
>
>  
>

John,

No IDE or double clicks.   Straight from the command line.

C:\Python23\Lib\site-packages\matplotlib\examples>python anim_tk.py 
--verbose-helpful
matplotlib data path C:\PYTHON23\share\matplotlib
loaded rc file C:\PYTHON23\share\matplotlib\.matplotlibrc
matplotlib version 0.64
verbose.level helpful
interactive is False
numerix Numeric 23.0
font search path ['C:\\PYTHON23\\share\\matplotlib']
loaded ttfcache file C:\Documents and Settings\Gary\.ttffont.cache
matplotlib data path C:\PYTHON23\share\matplotlib
loaded rc file C:\PYTHON23\share\matplotlib\.matplotlibrc
matplotlib version 0.64
verbose.level helpful
interactive is False
backend TkAgg version 8.4
elapsed 6.0779188952
Fatal Python error: PyEval_RestoreThread: NULL tstate

This application has requested the Runtime to terminate it in an unusual 
way.
Please contact the application's support team for more information.

C:\Python23\Lib\site-packages\matplotlib\examples>

>>>>> "Gary" == Gary  <pa...@in...> writes:

    Gary> Thanks ... so it's either me or WinXP.  I gave it a try on
    Gary> my other WinXP machine.  Same thing.  No dice.

    Gary> Can someone confirm that anim_tk.py runs (or doesn't) on
    Gary> WinXP / matplotlib 0.64 ??

I can't test this under windows XP right now (I can tomorrow).  But
how are you running your script (double clicknig, from a shell, from
within an IDE?

What does 

  c:> python anim_tk.py --verbose-helpful report?

I searched the matplotlib-users archives at
http://sourceforge.net/mailarchive/forum.php?forum_id=33405 for
PyEval_RestoreThread.  This has cropped up a few times before on
windows (including a September post from you also on anim_tk which did
not appear to be resolved).  

My usual first guess when people get this message is that they are
trying to run matplotlib from within a GUI IDE and are getting an IDE
conflict, which is why I asked you to test from the command shell.
Let me know the results of the tests above, because I'd like to track
this one down.

JDH

Steve Chaplin wrote:

>On Thu, 2004-11-18 at 18:14 -0500, Gary wrote:
>  
>
>>Returning after a time to my animation project.
>>
>>The first thing i did was to make sure anim_tk.py still runs.  It 
>>didn't.  A ghost figure window appears, and there is a long stall, then 
>>the message:
>>
>>elapsed 10.7956385487
>>Fatal Python error: PyEval_RestoreThread: NULL tstate
>>
>>This application has requested the Runtime to terminate it in an unusual 
>>way.
>>Please contact the application's support team for more information.
>>
>>Is it me, or did something break?
>>WinXP,  matplotlib 0.64, recently installed by deleting the existing 
>>matplolib directory and installing using the windows installer.  
>>Examples installed from the latest zip.
>>
>>thanks,
>>gary
>>    
>>
>Its working OK for me.
>Fedora 3 Linux, matplotlib 0.64, Python 2.3.4
>
>Steve
>
>  
>

Thanks ... so it's either me or WinXP.   I gave it a try on my other 
WinXP machine.   Same thing.  No dice.

Can someone confirm that anim_tk.py runs (or doesn't) on WinXP / 
matplotlib 0.64 ??

Thanks,
gary

>>>>> "Jochen" == Jochen Voss <vo...@se...> writes:


    Jochen> has vertical grid lines ONLY on the minor ticks, which
    Jochen> looks silly.  How do I get regularly spaced grid lines
    Jochen> here?

This is a consequence of the fact that the ticker skips minor ticks
which coincide with major ticks.  I am not sure this is the right
behavior, but was implemented to avoid other problems (overlapping
gridlines, for example, with anti-aliasing produces undesirable
results).  All you need to do is turn both major and minor grids on

    ax.xaxis.grid(True, which="minor")
    ax.xaxis.grid(True, which="major")

Should work....

JDH

Hello John,

thanks a lot for your help.  My picture is improving.
But one problem is left: the script

    from matplotlib.matlab import *
    from matplotlib.ticker import MultipleLocator

    subplot(211)
    ax=3Dgca()
    ax.xaxis.set_minor_locator(MultipleLocator(1))
    ax.xaxis.set_major_locator(MultipleLocator(5))
    ax.xaxis.grid(True, which=3D"minor")
    ax.yaxis.grid(False)
    semilogy([1,2,3,4,5,6,7,8,9,10,11],[1,2,3,4,5,6,7,8,9,10,11],basey=3D2)

    show()

has vertical grid lines ONLY on the minor ticks, which looks silly.
How do I get regularly spaced grid lines here?

All the best,
Jochen
--=20
http://seehuhn.de/

>>>>> "Jochen" == Jochen Voss <vo...@se...> writes:

    Jochen> Hello, I used matplotlib to create a graphical
    Jochen> representation of the boot process of my Debian GNU/Linux
    Jochen> system.  The result can be found at

    Jochen>     http://seehuhn.de/comp/bootlog.html

    Jochen> and especially in the (2400x1500 sized) picture

    Jochen>     http://seehuhn.de/comp/bootlog2.png

After looking again at your plot, particularly the rectangle parts
with text labels, it occurs to me that it would be nice to have a
general purpose class for this (rectangular boxes with text labels).
The class matplotlib.tables.Cell strives for this, but is not feature
complete.  What would be nice would be to be able to specify the
location of the text with respect to the box, with horizontal and
vertical alignment. This wouldn't be too hard, since text already has
these alignment flags with respect to an x,y location ( eg
http://matplotlib.sf.net/screenshots.html#align_text ).  

For full control, one would want to be able to specify the location of
x,y with respect to the rectangle (left, center, bottom, right, etc)
*and* the alignment of the text with respect to the x,y location, so
that one could have

--------------------
|                  |
|    centered      |
|                  |
--------------------

--------------------
|                  |
|                  | to-the-right
|                  |
--------------------


--------------------
|top-left-under    |
|                  | 
|                  |
--------------------


top-left-over
--------------------
|                  |
|                  | 
|                  |
--------------------

and so on.....  All the components are in place to make this
relatively easy from a layout persepctive.  One just has to plug them
together and make a nice, intuitive interface.  

JDH     

>>>>> "Jochen" == Jochen Voss <vo...@se...> writes:

    Jochen> Hello, I used matplotlib to create a graphical
    Jochen> representation of the boot process of my Debian GNU/Linux
    Jochen> system.  The result can be found at

    Jochen>     http://seehuhn.de/comp/bootlog.html

    Jochen> and especially in the (2400x1500 sized) picture

    Jochen>     http://seehuhn.de/comp/bootlog2.png

Very nice - you manage to pack a lot of information into the graph.
Edward Tufte would be proud!  It's nice to have folks stress testing
matplotlib

    Jochen> I have a question about matplotlib usage: 

  * I would like the picture to have vertical grid lines at positions
    1, 2, 3, 4, ..., On the horizontal x-Axis I would like to see
    labels at positions 0, 5, 10, 15, ...

The best way to do this would be to use minor ticks on 1,2,3,4,etc and
major ticks on 0,5,10,15 - the grids occur at the locations of the
ticks, and you can customize how you want the ticks labeled.  See
examples/major_minor_demo1.py and the use of the MultipleLocator.  The
Multiple locator places ticks at multiples of some base. For you minor
ticks you would use MultipleLocator(1) and for your major ticks
MultipleLocator(1).  The labels for the minor ticks are off by default
which is what you want, though you can customize this.

See http://matplotlib.sf.net/matplotlib.ticker.html for more info.

  * not horizonzal grid lines.  

The ax.xaxis.grid and ax.yaxis.grid functions can be used to
selectively turn on and off the grids for the respective axes.  The
signature is

    def grid(self, b, which='major'): 

where b is a boolean.  You can use this to control gridding for the
major and minor ticks on a per-axis basis.  So 

  ax.yaxis.grid(False) 



selectively turns off the grids for the y axis major tick grid lines.
The minor grids are off by default.  You can turn them on, eg with

   ax.xaxis.grid(True, which='minor') 

  * and I would like to get rid of the labels on the y-Axis.  Is this
    possible?

ax.set_yticklabels('')

See also the functions xticks and yticks in the matlab interface for
easy customization of tick locations and labels.

Cheers,
JDH

Hello,

I used matplotlib to create a graphical representation of the boot
process of my Debian GNU/Linux system.  The result can be found at

    http://seehuhn.de/comp/bootlog.html

and especially in the (2400x1500 sized) picture

    http://seehuhn.de/comp/bootlog2.png

I have a question about matplotlib usage: I would like the picture to
have vertical grid lines at positions 1, 2, 3, 4, ..., not horizonzal
grid lines.  On the horizontal x-Axis I would like to see labels at
positions 0, 5, 10, 15, ... and I would like to get rid of the labels
on the y-Axis.  Is this possible?  How do I do it?

All the best,
Jochen
--=20
http://seehuhn.de/

On Thu, 2004-11-18 at 18:14 -0500, Gary wrote:
> Returning after a time to my animation project.
> 
> The first thing i did was to make sure anim_tk.py still runs.  It 
> didn't.  A ghost figure window appears, and there is a long stall, then 
> the message:
> 
> elapsed 10.7956385487
> Fatal Python error: PyEval_RestoreThread: NULL tstate
> 
> This application has requested the Runtime to terminate it in an unusual 
> way.
> Please contact the application's support team for more information.
> 
> Is it me, or did something break?
> WinXP,  matplotlib 0.64, recently installed by deleting the existing 
> matplolib directory and installing using the windows installer.  
> Examples installed from the latest zip.
> 
> thanks,
> gary
Its working OK for me.
Fedora 3 Linux, matplotlib 0.64, Python 2.3.4

Steve

Returning after a time to my animation project.

The first thing i did was to make sure anim_tk.py still runs.  It 
didn't.  A ghost figure window appears, and there is a long stall, then 
the message:

elapsed 10.7956385487
Fatal Python error: PyEval_RestoreThread: NULL tstate

This application has requested the Runtime to terminate it in an unusual 
way.
Please contact the application's support team for more information.

Is it me, or did something break?
WinXP,  matplotlib 0.64, recently installed by deleting the existing 
matplolib directory and installing using the windows installer.  
Examples installed from the latest zip.

thanks,
gary

On Tue, 2004-11-16 at 17:45 +1100, matthew arnison wrote:
> Oh dear. I'm going to take another u-turn, and say I hit this
> IMAGE_FORMAT attribute glitch again.
> 
> To atone for my reversals, I have isolated a test case, and I attach
> sample code. It seems to be triggered by importing matplotlib.matlab in
> one module, and importing matplotlib backend stuff directly in another
> module.
> 
> Running frog.py gives:
> 
> Traceback (most recent call last):
...
> "C:\Python23\lib\site-packages\matplotlib\backends\backend_gtk.py", line
> 1423, in __init__
>       self.IMAGE_FORMAT         =
> matplotlib.backends.backend_mod.IMAGE_FORMAT
> AttributeError: 'module' object has no attribute 'IMAGE_FORMAT'

Its now fixed in CVS. backend_gtk now knows about all image formats and
does not need to look at other backends to see what formats they
support.

Steve