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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<title>Glossary — Matplotlib 2.0.2.post4416.dev0+g1df513f documentation</title>

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title="Search within Matplotlib 2.0.2.post4416.dev0+g1df513f documentation"

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<h3>Navigation</h3>

<ul>

<a href="../genindex.html" title="General Index"

accesskey="I">index</a></li>

<a href="../py-modindex.html" title="Python Module Index"

>modules</a> |</li>

<a href="../devel/color_changes.html" title="Default Color changes"

accesskey="P">previous</a> |</li>

<li><a href="../gallery/index.html">examples</a>| </li>

<li><a href="../tutorials/index.html">tutorials</a>| </li>

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<h3>Related Topics</h3>

<ul>

<li><a href="../contents.html">Documentation overview</a><ul>

<li>Previous: <a href="../devel/color_changes.html" title="previous chapter">Default Color changes</a></li>

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<span id="id1"></span><h1>Glossary<a class="headerlink" href="#glossary" title="Permalink to this headline">¶</a></h1>

<dd>The Anti-Grain Geometry (<a class="reference external" href="http://antigrain.com/">Agg</a>) rendering engine, capable of rendering

high-quality images</dd>

<dt id="term-cairo">Cairo</dt>

<dd>The <a class="reference external" href="https://cairographics.org">Cairo graphics</a> engine</dd>

<dt id="term-dateutil">dateutil</dt>

<dd>The <a class="reference external" href="https://dateutil.readthedocs.io">dateutil</a> library

provides extensions to the standard datetime module</dd>

<dd>Encapsulated Postscript (<a class="reference external" href="https://en.wikipedia.org/wiki/Encapsulated_PostScript">EPS</a>)</dd>

<dt id="term-freetype">FreeType</dt>

<dd><a class="reference external" href="https://www.freetype.org/">FreeType</a> is a font rasterization

library used by matplotlib which supports TrueType, Type 1, and

OpenType fonts.</dd>

<dd>The Gimp Drawing Kit for GTK+</dd>

<dd>The GIMP Toolkit (<a class="reference external" href="https://www.gtk.org/">GTK</a>) graphical user interface library</dd>

<dd>The Joint Photographic Experts Group (<a class="reference external" href="https://en.wikipedia.org/wiki/Jpeg">JPEG</a>) compression method and

file format for photographic images</dd>

<dt id="term-numpy">numpy</dt>

<dd><a class="reference external" href="http://www.numpy.org/">numpy</a> is the standard numerical

array library for python, the successor to Numeric and numarray.

numpy provides fast operations for homogeneous data sets and

common mathematical operations like correlations, standard

deviation, fourier transforms, and convolutions.</dd>

<dd>Adobe’s Portable Document Format (<a class="reference external" href="https://en.wikipedia.org/wiki/Portable_Document_Format">PDF</a>)</dd>

<dd>Portable Network Graphics (<a class="reference external" href="https://en.wikipedia.org/wiki/Portable_Network_Graphics">PNG</a>), a raster graphics format

that employs lossless data compression which is more suitable

for line art than the lossy jpg format. Unlike the gif format,

png is not encumbered by requirements for a patent license.</dd>

<dd>Postscript (<a class="reference external" href="https://en.wikipedia.org/wiki/PostScript">PS</a>) is a

vector graphics ASCII text language widely used in printers and

publishing. Postscript was developed by adobe systems and is

starting to show its age: for example is does not have an alpha

channel. PDF was designed in part as a next-generation document

format to replace postscript</dd>

<dt id="term-pygtk">pygtk</dt>

<dd><a class="reference external" href="http://www.pygtk.org/">pygtk</a> provides python wrappers for

the <a class="reference internal" href="#term-gtk"><span class="xref std std-term">GTK</span></a> widgets library for use with the GTK or GTKAgg

backend. Widely used on linux, and is often packages as

‘python-gtk2’</dd>

<dd><a class="reference external" href="https://wiki.python.org/moin/PyQt">pyqt</a> provides python

wrappers for the <a class="reference internal" href="#term-qt"><span class="xref std std-term">Qt</span></a> widgets library and is required by

the matplotlib Qt5Agg and Qt4Agg backends. Widely used on linux

and windows; many linux distributions package this as

‘python-qt5’ or ‘python-qt4’.</dd>

<dt id="term-python">python</dt>

<dd><a class="reference external" href="https://www.python.org">python</a> is an object oriented interpreted

language widely used for scripting, application development, web

application servers, scientific computing and more.</dd>

<dd><a class="reference external" href="http://pythonhosted.org/pytz/">pytz</a> provides the Olson tz

database in Python. it allows accurate and cross platform

timezone calculations and solves the issue of ambiguous times at

the end of daylight savings</dd>

<dd><a class="reference external" href="https://www.qt.io/">Qt</a> is a cross-platform

application framework for desktop and embedded development.</dd>

<dd><a class="reference external" href="http://doc.qt.io/qt-4.8/index.html">Qt4</a> is the previous,

but most widely used, version of Qt cross-platform application

framework for desktop and embedded development.</dd>

<dd><a class="reference external" href="http://doc.qt.io/qt-5/index.html">Qt5</a> is the current

version of Qt cross-platform application

framework for desktop and embedded development.</dd>

<dt id="term-raster-graphics">raster graphics</dt>

<dd><a class="reference external" href="https://en.wikipedia.org/wiki/Raster_graphics">Raster graphics</a>, or bitmaps,

represent an image as an array of pixels which is resolution

dependent. Raster graphics are generally most practical for

photo-realistic images, but do not scale easily without loss of

quality.</dd>

<dd>The Scalable Vector Graphics format (<a class="reference external" href="https://en.wikipedia.org/wiki/Svg">SVG</a>). An XML based vector

graphics format supported by many web browsers.</dd>

<dd>Tagged Image File Format (<a class="reference external" href="https://en.wikipedia.org/wiki/Tagged_Image_File_Format">TIFF</a>) is a

file format for storing images, including photographs and line

art.</dd>

<dd><a class="reference external" href="http://www.tcl.tk/">Tk</a> is a graphical user interface for Tcl

and many other dynamic languages. It can produce rich, native

applications that run unchanged across Windows, Mac OS X, Linux

and more.</dd>

<dt id="term-vector-graphics">vector graphics</dt>

<dd><a class="reference external" href="https://en.wikipedia.org/wiki/Vector_graphics">vector graphics</a> use geometrical

primitives based upon mathematical equations to represent images

in computer graphics. Primitives can include points, lines,

curves, and shapes or polygons. Vector graphics are scalable,

which means that they can be resized without suffering from

issues related to inherent resolution like are seen in raster

graphics. Vector graphics are generally most practical for

typesetting and graphic design applications.</dd>

<dt id="term-wxpython">wxpython</dt>

<dd><a class="reference external" href="https://www.wxpython.org/">wxpython</a> provides python wrappers

for the <a class="reference internal" href="#term-wxwidgets"><span class="xref std std-term">wxWidgets</span></a> library for use with the WX and WXAgg

backends. Widely used on linux, OS-X and windows, it is often

packaged by linux distributions as ‘python-wxgtk’</dd>

<dt id="term-wxwidgets">wxWidgets</dt>

<dd><a class="reference external" href="http://www.wxwidgets.org/">WX</a> is cross-platform GUI and

tools library for GTK, MS Windows, and MacOS. It uses native

widgets for each operating system, so applications will have the

look-and-feel that users on that operating system expect.</dd>

</dl>

</div>

</div>

Last updated on Jul 16, 2017.

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