[Matplotlib-users] matplotlib-0.54 Win98 crash

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I just tried matplotlib-0.54 under Win98 with the GTKAgg backend and it crashes python when I do
import matplotlib.matlab
It doesn't seem to get far enough to generate any helpful diagnostics I'm afraid.
I've reverted to 0.53.1 for the moment.
Anyone else had success or failure in Win98?

Gary

----- Original Message -----
From: John Hunter <jdh...@ac...>
Date: Thu, 20 May 2004 09:03:47 -0500
To: mat...@li...
Subject: [Matplotlib-users] ANN matplotlib-0.54

> 
> What's new in matplotlib 0.54
> =============================
> 
> I've done a lot of rewriting of the core of matplotlib to support some
> new features - mainly fast handling of polygon collections (pcolor and
> scatter) and since the changes were pervasive, I took to opportunity
> to fix some things that were bugging me about the design of
> matplotlib.  If you use the API, creating your own Axes, Subplots,
> Lines, Rectangles, Texts, or working directly with transforms and
> bboxes, you will need to upgrade your code, since the constructors of
> all these objects have been simplified.  The major changes affecting
> users of the matlab interface are for pcolor and scatter.  These
> changes and others are detailed below and in
> http://matplotlib.sf.net/API_CHANGES.  Sorry for the pain - in the
> long run, the new design is much cleaner and easier to work with, and
> as far as I can see, will be stable.
> 
> More general transformation architecture
> ----------------------------------------
> 
> Earlier versions of matplotlib handled transformation of x and y
> separately (ie we assumed all transformations were separable) but this
> makes is difficult to do rotations or polar transformations, for
> example. The new transformation lays the framework for doing general
> transformations; see the transforms module
> http://matplotlib.sf.net/matplotlib.transforms.html.
> 
> More efficient pcolor
> ---------------------
> 
> pcolor is now implemented with matplotlib.collections.  polygon
> collections which should provide significantly faster performance
> across backends. The return value from pcolor is now a PolyColleciton
> object rather than a list of patches, but the API is largely
> compatible. See http://matplotlib.sf.net/API_CHANGES. The old function
> pcolor_classic is retained for full backward compatibility.
> 
> New scatter plots
> -----------------
> 
> The http://matplotlib.sf.net/matplotlib.matlab.html#-scatter command
> is rewritten, and is implemented in the backend with a new polygon
> collection class. For large scatter plots, the performance is 5 times
> faster across all backends and 10 times faster for the *Agg
> backends. Also, scatter works with many symbols: diamonds, sqaures,
> oriented triangles, circles and more. As with pcolor, the scatter
> command returns a collection instance rather than a list of patches as
> before; see See http://matplotlib.sf.net/API_CHANGES
> 
> 
> Also the size argument is now in points^2 (the area of the symbol in
> points) and is not in data coords as before. This fixes a few
> problems: symbols are not skewed by unequally shaped axes, scatter
> works with log coords w/o distoring the symbol, and it is matlab
> compatible.
> 
> The function scatter_classic is the old scatter function and will work
> identically.
> 
> Enhanced mathtext
> -----------------
> 
> A significant rewrite of the mathtext module provides much more
> precise layout. The freetype component has been factored out of the
> layout engine and replaced by an abstract class for font
> handling. This lays the groundwork for ps mathtext. The text clipping
> problems have been fixed. Added spacing commands '\/' (small space)
> and '\ ' (regular space), and '\hspace{frac}' (space is fraction of
> pointsize) as well as composite chars such as \angstrom. Fixed
> over/under subscripts so you can say x_i^j and nested subscripts if
> you do x_i_{j} (you need the curlys)
> 
> Many new plot symbols and markers
> ---------------------------------
> 
> Thanks Gary Ruben. See
> http://matplotlib.sf.net/matplotlib.matlab.html#-plot
> 
> Font cacheing
> -------------
> 
> Paul Barrett added caching support to the font manager to increase
> performance. This and other changes have dramatically improved
> postscript backend performance.
> 
> Newlines in text
> ----------------
> 
> After much encouragement from Al, I finally got around to supporting
> newline separated text in the Text frontend, so this is no longer
> backend dependent. As a bonus, it even works with arbitrary
> rotations. There is an additional text attribute 'multialignment' that
> specifies the alignment of the lines in multiline text. See
> http://matplotlib.sf.net/examples/multiline.py and
> http://matplotlib.sf.net/screenshots.html#align_text. Works with all
> text instances except mathtext.
> 
> Axes hold
> ---------
> 
> matlab compatible hold command determines whether subsequent plot
> commands overlay current plot or clear the axes by default. Default
> setting is set in matplotlibrc and toggled by the hold command.
> 
> New rc file options
> -------------------
> 
> You can control grid properties and tick padding (the space between
> the axes and tick label) in matplotlibrc. The new options and defaults
> are
> 
> axes.hold        :   True    # whether to clear the axes by default on
>                              #  each plot command.  Toggle with hold command
> grid.color       :   k       # grid color
> grid.linestyle   :   :       # dotted
> grid.linewidth   :   0.5     # in points            
> 
> tick.major.pad      : 4       # distance to major tick label in points
> tick.minor.pad      : 4       # distance to the minor tick label in points
> 
> 
> Full dash control
> -----------------
> 
> You can precisely control the dashes with a sequence of on off ink in
> points. See http://matplotlib.sf.net/examples/dash_control.py
> 
> Removed close buttons from GUI
> ------------------------------
> 
> Steve Chaplin persuasively argued these were a bad idea. It's taken me
> a while not to instinctively try and click on the missing buttons, but
> I'm used to it now.
> 
> Properly aligned text with arbitrary alignments
> -----------------------------------------------
> 
> You can now expect horizontal and vertical alignment specifications to
> work with text at an arbitrary angle, eg, 45 degrees. See
> http://matplotlib.sf.net/examples/alignment_test.py
> 
> Added stem plotting command
> ---------------------------
> 
> See http://matplotlib.sf.net/matplotlib.matlab.html#-stem and
> http://matplotlib.sf.net/examples/stem_plot.py
> 
> Bug fix roundup
> ---------------
> 
> Executive summary: fixed ps centering, errorbar autoscaling, constant
> data plot, copy tick attribute, mathtext fontsizing in interactive
> mode, missing draw if interactive, some numerix/numarray
> incompatibilities in type handling, agg memory leak, wx tooltips and
> close not returning interpreter.
> 
> See http://matplotlib.sf.net/CHANGELOG for details. 
> 
> 
> Downloads at http://sourceforge.net/projects/matplotlib
> 
> 
> 
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