matplotlib Code

516 lines (431 with data), 18.3 kB

new_to_50 = ( 

    ('Antigrain backend: Agg', """Adding to the growing list of image
backends is <a href=http://antigrain.com>Antigrain</a>.  This is a
backend written mostly in extension code and is the fastest of all the
image backends.  Agg supports freetype fonts, antialiased drawing,
alpha blending, and much more. The windows installer contains
everything you need except Numeric to use the agg backend out of the
box; for other platforms see <a href=backends.html#Agg>The Agg
Backend</a> """ ),

    #TODO: pypaint?
    ('Paint/libart backend', """David Moore wrote a backend for <a
href=http://pypaint.sourceforge.net>pypaint</a>, a <a
href=http://www.levien.com/libart>libart</a> wrapper.  libart is a
high quality, cross platform image renderer that supports antialiased
lines, freetype fonts, and other capabilities to soon be exploited.
Thanks David!  See <a href=backends.html#Paint>The Paint Backend</a>
for more information and install instructions""" ),


        ('The Matplotlib <a href=faq.html>FAQ</a>', 'Matplotlib now has a FAQ.'),

        ('Alpha channel attribute', """All the figure elements now
have an alpha attribute to allow blending and translucency.  Not all
backends are currenly capable of supporting alpha - currently only
Agg, but Paint should be able to support this soon - see the scatter
<a href=screenshots.html#scatter_demo2>screenshot</a> for an example
of alpha at work."""),


        ('Table class added', """John Gill has developed a very nice
<a href=matplotlib.table.html>Table</a> class and
href=matplotlib.matlab.html#-table>table</a>function that plays well
with bar charts and stacked bar charts.  See example code and
screenshot <a href=screenshots.html#table_demo>table_demo</a>.  """),

	('Added x linesyle', """Matt MacMahon submitted a patch for an
'x' linestyle.  Thanks Matt! """ ),

	('gd module on win32', """\
With much weeping and gnashing of teeth and help from half the people
on this globe, built a gdmodule win32 installer.  Special thanks to
Stefan Kuzminski for putting up with my endless windows confusions.
The the win32 quickstart at <a href=backends.html#GD>installing</a>
the GD backend."""
),	

	('GD supports clipping and antialiased line drawing', """\
See instructions about upgrading gd and gdmodule at <a
href=backends.html#GD>Installing the GD backend</a>.  The line object
has a new 'antialiased' property, that if True, the backend will
render the line antialiased if supported.  Note antialiased drawing
under GD is slow, so be sure to turn the property off <tt>set(lines,
'antialiased', False)</tt> if you experience performance problems.  If
you need performance and antialiasing, use the agg backend."""),

	('wild and wonderful bar charts', """\
You can provide an optional argument bottom to the <a
href=matplotlib.matlab.html#-bar>bar</a> command to determine where
the bottom of each bar is, default 0 for all.  This enables stacked
bar plots and candelstick plots -- <a
href=examples/bar_stacked.py>examples/bar_stacked.py</a>.  Thanks to
David Moore and John Gill for suggestions and code.  """),

	('Figure backend refactored', """\
The figure functionality was split into a backend independent
component <a href=matplotlib.figure.html>Figure</a> and a backend
dependent component <a
href=matplotlib.backend_bases.html#FigureCanvasBase>FigureCanvasBase</a>.
This completes the transition to a totally abstract figure interface
and improves the ability the switch backends and a figure to multiple
backends.  See <a href=API_CHANGES>API_CHANGES</a> for information on
migrating applications to the new API."""),

	('Bugfixes and optimizations', """\

<ul>

  <li> All : the yticks on the right hand side were placed incorrectly,
  now fixed</li>

  <li> All : Exposed all Figure construc attributes (figsize, dpi,
  facecolor, edgecolor) to matlab interface</li>

  <li> All : ticklabels now make a more intelligent choice about how
  many significant digits to display </li>

  <li> GD : An int truncation bug was causing the dotted lines to
  disappear</li>

  <li> GD and GTK : Fixed line width to scale with DPI</li>

  <li> GTK and WX : Lazy import of backend_ps for backend switching
  improves startup time</li>

  <li> GD, GTK and PS : Fixed minor text layout problems</li>

  <li> GD : Fixed the constant for GD which maps pixels per inch -
  this should give better agreement with other backends with he
  relative sizes of objects</li>

  <li> GTK : Dash spacing was not properly scaling with DPI</li> 
  <li> GTK : Rotated text did not display correctly in some cases</li> 

  <li> GTK : Lots of optimizations using cacheing in GTK backend for
  improved performace for monitoring / animation scripts.  Discovered
  and patched a memory leak in pygtk -
  http://bugzilla.gnome.org/show_bug.cgi?id=133681 which was causing
  repeat calls to draw() to leak memory.</li>

  <li>GTK on win32.  Fixed a problem where pygtk couldn't find Times.
  See FAQ entry <a href=faq.html#WINFONT>.  
</ul>

"""),



)

new_to_42 = ( 

	('EPS output from PS backend', 
"""Just add an eps extension"""),

	('PS and EPS save from GTK and WX backends with bugs fixed',
"""
A few of the bugs that were lingering in the PS output from the GTK
backend have been cleared up.  A fairly substantial refactoring of the
Text class enabled this.  Text is now backend independent and behaves
like the other artists in the figure (lines, patches, etc).
Additionally, PS and EPS save from WX backend work
"""),	

	('Object picker example', 
"""The file examples/object_picker.py is a template showing how to
select objects in the figure with the mouse(eg, text, lines).  If you
click on the line, a properties dialog will pop up.  You can edit the
line properties.  This is just a template for those who want to
develop a GUI properties dialog.  If interested, contact the mailing
list.  It would be straight forward to extend this example to allow
you to move objects in the figure, etc..."""),



)


new_to_41 = ( ('Pcolor optimizations', 
"""Several optimizations have improved the performance of pcolor
across all backends, 4x on the GTK backend"""),

	('PS save from GTK backend',
"""
An alpha version of the PS export functionality from the GTK backend.
Mostly works with a few know problems.  You can simply call
savefig('somefile.ps') or use the PS extension when saving from the
GUI.
"""),	

	('Bug fixes',
"""
Fixed bugs in semilogy and in setting dashes under some versions of
Numeric
"""),	

	('bar takes (optional)multiple color args',
"""
You can now pass bar a len(x) list of color args to have bars with
different colors.
"""),	
)

new_to_40 = ( ('Wx python backend', 
""" Jeremy O'Donoghue has done an amazing job implementing the backend
for <a href=http://www.wxpython.org>wxpython</a>.  See <a
href=matplotlib.backends.backend_wx.html>backend_wx</a> for a status
report on what's working and what the outstanding issues are."""),

	('New plotting functions',
"""
Several new plotting functions are added.  <a
href=matplotlib.matlab.html#-psd>psd</a> plots the power spectral
density of a time series, <a href=matplotlib.matlab.html#-csd>csd</a>
plots the cross spectral density of two time series, and <a
href=matplotlib.matlab.html#-cohere>cohere</a> plots the coherence.
See the examples <a href=examples/psd_demo.py>psd_demo.py</a> and <a
href=examples/csd_demo.py>csd_demo.py</a>
"""),	

	('Expanded legend capabilities',
"""
The legend class is improved, with a more sophisticated layout engine
and the ability to accept lines or rectangle patches as an optional
first argument to specify which lines/patches make up the legend.
There are also additional legend placement locations, like 'upper
center'.  See <a href=screenshots.html#legend_demo>legend_demo</a> and
<a href=screenshots.html#barchart_demo>barchart_demo</a>.
"""),

        ('Expanded errorbar capabilities',
"""
Gary Ruben contributed some code to support x and y errorbars, either
symmetric or asymmetric.  See <a
href=examples/errorbar_demo.py>errorbar_demo.py</a> for examples of
all the wild and wonderful errorbar styles.  Bar charts can now also
display errorbars; see <a
href=screenshots.html#barchart_demo>barchart_demo</a>
"""),

        ('Substantially improved transform architecture',
"""
The transform architecture was refactored, allowing much more precise
layout.  Lines, patches, text, etc... can now be placed and scaled in
arbitrary units, relative axes units, or physical size.  Application
programmers who want to create lines, patches and text directly using
the API should read the <a href=matplotlib.transforms.html>transform
module</a> docs for more info.  See <a
href=matplotlib.matlab.html#-text>text</a> for an example of how to
specify text locations in axes coords (0,0 is lower left and 1,1 is
upper right).
"""),

        )

new_to_32 = ( 
	('wx python backend -- development version',
"""
Jeremy O'Donoghue has done an amazing job implementing the backend for
<a href=http://www.wxpython.org>wxpython</a>.  The code is still alpha
and several of the features that will be available are under active
development.  See the code matplotlib/backends/backend_wx.py for a
report on existing features and known bugs.  If you have wxpython
installed, you can take it for a test drive with <tt>python
yourscript.py -dWX</tt> and please report any bugs not listed in the
KNOWN BUGS section of the wx src to the <a
href=http://sourceforge.net/mailarchive/forum.php?forum_id=36187>matplotlib-devel</a>
mailing list.
"""),	
	('Pseudo color plots',
"""
The <a href=matplotlib.matlab.html#-pcolor>pcolor</a> command
generates pseudo color plots.  See <a
href=screenshots.html#pcolor_demo>pcolor_demo</a> and <a
href=screenshots.html#mri_with_eeg>mri_with_eeg</a> for screenshots
and <a href=examples/pcolor_demo.py>pcolor_demo.py</a> for some
example code
"""),
	('Numerous small bugfixes',
"""
Fixed reversed zoom tools, bug in ticklabel setting, bug in AFM font
path setting for PS backend, fixed a label position bug
"""),
        )

new_to_29_2 = (
    ('Log scaling',
"""
Andrew Straw chipped in provided some code to support log scaling.
Many thanks.  matplotlib now has three new commands <a
    href=matplotlib.matlab.html#-semilogx>semilogx</a>, <a
    href=matplotlib.matlab.html#-semilogy>semilogy</a>, and <a
    href=matplotlib.matlab.html#-loglog>loglog</a>, and a new demo
   <a href=examples/log_demo.py>log_demo.py</a>
"""),
    )

new_to_29_1 = (
    ('GTK bugfixes and interactive mode',
"""This includes several bug fixes in the GTK backend which affected
interactive mode and figure resizing.  See <a href=examples/interactive2.py>interactive2.py</a> in
the new src release.
"""),
    ('Figure legends',
"""A matlab compatible legend command has been added.  See
<a href=examples/legend_demo.py>legend_demo.py</a>
"""),
   ('Bug fixes in alternate color specifications',
"""Some bugs regarding alternate ways of specifying colors have been
ironed out (you can now use hex strings or 0-1 RGB tuples anywhere a
color format string is supported ).  See <a
href=examples/color_demo.py>color_demo.py</a>
"""),
)

new_to_29 = ( 
	('Multiple output devices', 
"""The major improvement in matplotlib with this release is that the
library no longer requires pygtk or GTK, and instead renders to an
abstract drawing interface.  This allows you to use matplotlib even in
environments with no X server (such as for a web application server to
make dynamic charts), and to create publication quality postscript
output.  See <a href=backends.html>output formats</a>.
"""),
        ('Improved scaling with high resolution outputs',
"""
Earlier versions of matplotlib did not properly handle the scaling of
text and marker sizes with font resolution, so when you went from a
100DPI screen image to a 600DPI output image, the text and marker
sizes appeared too small.  This has been fixed for all of the
matplotlib output formats.
"""),

        ('Reorganization of class library',
"""
The class library has been substantially refactored, to isolate the
renderer and graphics context classes that backend writers must
implement.  See backends/backend_template.py if you want to write a
backend for your favorite GUI or output format.
"""),

        ('Line class rewritten for greater matlab compatibility',
"""
The line classes have all been reorganized into a single class that
has greater matlab compatibility.  This enables you to change existing
lines to a new line style (eg, from solid line to markers with
circles) as well as supports lines with a combination of line styles
and markers times (eg, data points marked with circles and a dash line
interpolating them).
"""),

        ('Many small bug fixes',
"""
"""),
)

new_2_to_21 = (
    ('Deprecation warnings',
"""
Several users reported Deprecation warnings with python2.3 and pygtk
1.99.18.  These were all related to passing floats rather than ints to
gtk drawing commands.  These have been cleaned up and none of the
examples generate warnings.  Let me know if you get some!
"""),
    ('Improved interactive shell',
"""
Jon Anderson posted an improved GTK shell to the pygtk mailing list.
Using this no longer requires that pygtk have threading built in.  See
<a href="examples/interactive2.py">interactive2.py</a>.  Use this if you want to make plots
interactively from the python shell.
"""),
    ('Specifying colors',
"""
You can now specify colors with color format strings, RGB tuples, or
hex strings as in html.  See <a href="examples/color_demo.py">color_demo.py</a>
"""),
    ('Figure text',
"""
All text in matplotlib has been in axis (data coordinates).  Sometimes
it's helpful to be able to specify text in relative figure
coordinates.  Now figures have text.  When you scroll interactively,
axis text moves with the data, figure text is fixed.  This is also
useful for making a figure title when you have multiple columns of
subplots.  See <a href="examples/figtext.py">figtext.py</a>
"""),
    ('Flicker free updates',
"""
All drawing is done to a pixmap and then updated.  This allows flicker
free updates of the figure.  You can use this, for example, to build a
system monitor, which continuously shows system resources such as RAM,
CPU, etc...  See <a href="examples/system_monitor.py>system_monitor.py</a> for a demo. 
"""),
    )
    


new_1to2 = (
('Font handling',
"""
Major improvements in font and text handling.  matplotlib 0.1 drew all
text in the same, non-configurable font.  In 0.2, font name, size,
weight, and angle, color, rotation, and more are easily configurable.
See the <a href=tutorial.html#text>text tutorial</a>.
"""),

('Multiple figures',
"""
Multiple figures supported with the <a
href=matplotlib.matlab.html#-figure>figure</a> command.  See the <a
href=tutorial.html#figs_and_axes>Working with multiple figures and
axes</a>.
"""),

('Interactive shell',
"""
Interactive use from the python shell if you have pygtk compiled with
threads.  See <a href=interactive.html>Using matplotlib
interactively</a>.
"""),

('Saving figures', 
""" Ability to save figures in arbitrary resolution PNG or JPEG with a
bug fix that caused saved figures to be corrupted by anything blocking
the figure window.  A GUI widget has been added to the figure toolbar
to save figures and a new command <a
href=matplotlib.matlab.html#-savefig>savefig</a> has been added.  """),

('Navigation',
"""
A new and hopefully improved navigation toolbar has been added that
doesn't require a wheel mouse, but still works with one.  See the <a
href=tutorial.html#navigation>Navigation tutorial</a>.
"""),

('More examples and screenshots',
"""
New examples and screenshots illustrating the new text functionality,
the new plot types, and new commands.  See the examples subdirectory
in the src distribution.
"""),

('Patches',
"""
A <a href=matplotlib.patches.html#Patch>Patch</a> class added for drawing patches
(rectangles, polygons, circles).  This supports three new plotting
commands <a href=matplotlib.matlab.html#-scatter>scatter</a>, <a
href=matplotlib.matlab.html#-hist>hist</a> and <a href=matplotlib.matlab.html#-bar>bar</a>,
with more to come.
"""),

('New commands',
"""
New plotting commands <a href=matplotlib.matlab.html#-bar>bar</a>, <a href=matplotlib.matlab.html#-close>close</a>, <a href=matplotlib.matlab.html#-errorbar>errorbar</a>, <a href=matplotlib.matlab.html#-figure>figure</a>, <a href=matplotlib.matlab.html#-hist>hist</a>, <a href=matplotlib.matlab.html#-text>text</a>,
  <a href=matplotlib.matlab.html#-scatter>scatter</a>, <a href=matplotlib.matlab.html#-savefig>savefig</a>, <a href=matplotlib.matlab.html#-ylabel>ylabel</a>.
"""),

('Matplotlib on sourceforge',
"""
matplotlib homepage moved to <a
href=http://matplotlib.sourceforge.net>sourceforge</a> with a
(hopefully) more useful homepage.
"""),

('Documentation',
"""
Much better documentation and a <a href=tutorial.html>tutorial</a>.
"""),

('Refactoring',
"""
Substantial rewrite of class library.  All text now handled by the <a
href=text.html#AxisText>AxisText</a> class in text.py.  Axis handling
refactored into dedicated class <a href=figure.html#Axis>Axis</a>
defined in figure.py.
"""),


)

@header@

<h2> What's new in matplotlib 0.50</h2>
 + for title, new in new_to_50:
   <h4>@title@</h4>
   @new@<br>
 -

<h2> What's new in matplotlib 0.42</h2>
 + for title, new in new_to_42:
   <h4>@title@</h4>
   @new@<br>
 -


<h2> What's new in matplotlib 0.41</h2>
 + for title, new in new_to_41:
   <h4>@title@</h4>
   @new@<br>
 -

<h2> What's new in matplotlib 0.40</h2>
 + for title, new in new_to_40:
   <h4>@title@</h4>
   @new@<br>
 -

<h2> What's new in matplotlib 0.32</h2>
 + for title, new in new_to_32:
   <h4>@title@</h4>
   @new@<br>
 -

<h2> What's new in matplotlib 0.29.2</h2>
 + for title, new in new_to_29_2:
   <h4>@title@</h4>
   @new@<br>
 -


<h2> What's new in matplotlib 0.29.1</h2>
 + for title, new in new_to_29_1:
   <h4>@title@</h4>
   @new@<br>
 -

<h2> What's new in matplotlib 0.29</h2>
 + for title, new in new_to_29:
   <h4>@title@</h4>
   @new@<br>
 -

<h2> What's new in matplotlib 0.21</h2>
 + for title, new in new_2_to_21:
   <h4>@title@</h4>
   @new@<br>
 -
  
<h2> What's new in matplotlib 0.2</h2>
 + for title, new in new_1to2:
   <h4>@title@</h4>
   @new@<br>
 - 

@footer@