Python to generate nice looking SVG graph http://pygal.org/
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===============
Documentation
===============
First steps
===========
First you need to download the pygal package, see the `download page <download.html>`_.
When it's done, you are ready to make your first chart:
.. code-block:: python
import pygal # First import pygal
bar_chart = pygal.Bar() # Then create a bar graph object
bar_chart.add('Fibonacci', [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55]) # Add some values
bar_chart.render_to_file('bar_chart.svg') # Save the svg to a file
Now you have a svg file called `bar_chart.svg` in your current directory.
You can open it with various programs such as your web browser, inkscape or any svg compatible viewer.
The resulting chart will be tho following:
.. pygal-code::
bar_chart = pygal.Bar()
bar_chart.add('Fibonacci', [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55])
To make a multiple series graph just add another one:
.. pygal-code::
bar_chart = pygal.Bar()
bar_chart.add('Fibonacci', [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55])
bar_chart.add('Padovan', [1, 1, 1, 2, 2, 3, 4, 5, 7, 9, 12])
If you want to stack them, use `StackedBar` instead of `Bar`:
.. pygal-code::
bar_chart = pygal.StackedBar()
bar_chart.add('Fibonacci', [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55])
bar_chart.add('Padovan', [1, 1, 1, 2, 2, 3, 4, 5, 7, 9, 12])
You can also make it horizontal with `HorizontalStackedBar`:
.. pygal-code::
bar_chart = pygal.HorizontalStackedBar()
bar_chart.add('Fibonacci', [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55])
bar_chart.add('Padovan', [1, 1, 1, 2, 2, 3, 4, 5, 7, 9, 12])
And finally add a title and some labels:
.. pygal-code::
bar_chart = pygal.HorizontalStackedBar()
bar_chart.title = "Remarquable sequences"
bar_chart.x_labels = map(str, range(11))
bar_chart.add('Fibonacci', [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55])
bar_chart.add('Padovan', [1, 1, 1, 2, 2, 3, 4, 5, 7, 9, 12])
Next: `Charts types <chart_types.html>`_