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GlossaryΒΆ

AGG
The Anti-Grain Geometry (Agg) rendering engine, capable of rendering high-quality images
Cairo
The Cairo graphics engine
dateutil
The dateutil library provides extensions to the standard datetime module
EPS
Encapsulated Postscript (EPS)
freetype
freetype is a font rasterization library used by matplotlib which supports TrueType, Type 1, and OpenType fonts.
GDK
The Gimp Drawing Kit for GTK+
GTK
The GIMP Toolkit (GTK) graphical user interface library
JPG
The Joint Photographic Experts Group (JPEG) compression method and file format for photographic images
numpy
numpy 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.
PDF
Adobe’s Portable Document Format (PDF)
PNG
Portable Network Graphics (PNG), 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.
PS
Postscript (PS) 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
pygtk
pygtk provides python wrappers for the GTK widgets library for use with the GTK or GTKAgg backend. Widely used on linux, and is often packages as ‘python-gtk2’
pyqt
pyqt provides python wrappers for the Qt widgets library and is required by the matplotlib QtAgg and Qt4Agg backends. Widely used on linux and windows; many linux distributions package this as ‘python-qt3’ or ‘python-qt4’.
python
python is an object oriented interpreted language widely used for scripting, application development, web application servers, scientific computing and more.
pytz
pytz 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
Qt
Qt is a cross-platform application framework for desktop and embedded development.
Qt4
Qt4 is the most recent version of Qt cross-platform application framework for desktop and embedded development.
raster graphics
Raster graphics, 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.
SVG
The Scalable Vector Graphics format (SVG). An XML based vector graphics format supported by many web browsers.
TIFF
Tagged Image File Format (TIFF) is a file format for storing images, including photographs and line art.
Tk
Tk 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.
vector graphics
vector graphics 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.
wxpython
wxpython provides python wrappers for the wxWidgets 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’
wxWidgets
WX 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.