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.. index:: introduction
.. _introduction:
************
Introduction
************
PyCha is a very simple `Python <http://www.python.org>`_ package for drawing
charts using the `Cairo <http://www.cairographics.org/>`_ library. Its lead
developer is Lorenzo Gil Sanchez.
.. index:: pycha goals
PyCha aims to be:
* Lightweight
* Simple to use
* Nice looking with default values
* Customizable
.. index:: chart types
.. _pycha-chart-types:
The following charts are currently supported (see screenshots below):
* horizontal bar charts (``pycha.bar.HorizontalBarChart``)
* vertical bar charts (``pycha.bar.VerticalBarChart``)
* pie charts (``pycha.pie.PieChart``)
* line charts (``pycha.line.LineChart``)
* scatter charts (``pycha.scatter.ScatterChart``)
Support for stacked bar charts is planned for a future release.
PyCha is distributed under the terms of the `GNU Lesser General Public License
<http://www.gnu.org/licenses/lgpl.html>`_.
If you require more advanced graphs, you might want to consider `matplotlib
<http://matplotlib.sourceforge.net/>`_.
.. index:: screenshots
.. _screenshots:
Screenshots
===========
- **horizontal bar chart**
.. image:: ../examples/hbarchart.png
- **vertical bar chart**
.. image:: ../examples/vbarchart.png
- **pie chart**
.. image:: ../examples/piechart.png
- **line chart**
.. image:: ../examples/linechart.png
- **scatter chart**
.. image:: ../examples/scatterchart.png
.. index:: output formats
.. _output-formats:
Output Formats
==============
PyCha uses the `Cairo <http://www.cairographics.org/>`_ library so it should support
all `Cairo surfaces <http://www.cairographics.org/manual/cairo-surfaces.html>`_.
Please refer to :ref:`save-chart-to-file` and :ref:`embed-chart-in-gtk-app` for
examples.
.. _get-involved:
Get Involved
============
PyCha has a mailing list at `http://groups.google.com/group/pycha
<http://groups.google.com/group/pycha>`_. Questions and ideas are welcome.
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