Merge branch 'website' of github.com:Kozea/pygal into website

pages/download.rst

@@ -23,6 +23,9 @@ You can also download `the development snapshot from github <http://github.com/K
 Linux Distribution Packages
 ===========================
 
-*Not packaged yet.*
+Pygal has been packaged for:
+
+- `Fedora <https://admin.fedoraproject.org/pkgdb/acls/name/python-pygal>`_ by ralph
+- `Gentoo <http://packages.gentoo.org/package/dev-python/pygal>`_ by Ben de Groot
 
 If you are interested in creating packages for Linux distributions, `contact us </support/>`_.

pages/home.rst

@@ -101,8 +101,6 @@ Optional dependencies
 PNG output requires `CairoSVG <http://cairosvg.org/>`_, `tinycss <http://packages.python.org/tinycss/>`_ and `cssselect <http://packages.python.org/cssselect/>`_.
 Install those with ``pip install CairoSVG tinycss cssselect``.
 
-Interpolations need the `scipy <http://www.scipy.org/>`_ python module.
-
 Unit testing needs `py.test <http://pytest.org/latest/>`_ or `nosetests <http://readthedocs.org/docs/nose/en/latest/>`_.
 
 Visual testing is based on `flask <http://flask.pocoo.org/>`_.

pages/interpolations.rst

@@ -9,22 +9,6 @@ Interpolations
 
 .. contents::
 
-Interpolations need the `scipy python module <http://www.scipy.org/>`_.
-To enable it just specify the interpolation type to:
-
-- linear
-- nearest
-- zero
-- slinear
-- quadratic
-- cubic
-- krogh
-- barycentric
-- univariate
-- or an integer representing the order of the spline interpolator
-
-For more info see `interp1d definition on scipy <http://docs.scipy.org/doc/scipy/reference/generated/scipy.interpolate.interp1d.html#scipy.interpolate.interp1d>`_
-
 
 Without interpolation:
 ----------------------
@@ -46,17 +30,74 @@ With cubic interpolation:
   chart = pygal.Line(interpolate='cubic')
   chart.add('line', [1, 5, 17, 12, 5, 10])
 
-With krogh interpolation:
+
--------------------------
+With quadratic interpolation:
+-----------------------------
+
+``interpolate``
+
+.. pygal-code::
+
+  chart = pygal.Line(interpolate='quadratic')
+  chart.add('line', [1, 5, 17, 12, 5, 10])
+
+
+With lagrange interpolation:
+----------------------------
+
+``interpolate``
+
+.. pygal-code::
+
+  chart = pygal.Line(interpolate='lagrange')
+  chart.add('line', [1, 5, 17, 12, 5, 10])
+
+
+With trigonometric interpolation:
+---------------------------------
 
 ``interpolate``
 
 .. pygal-code::
 
-  chart = pygal.Line(interpolate='krogh')
+  chart = pygal.Line(interpolate='trigonometric')
   chart.add('line', [1, 5, 17, 12, 5, 10])
 
 
+With hermite interpolation:
+---------------------------
+
+``interpolate``
+
+.. pygal-code::
+
+  chart = pygal.Line(interpolate='hermite')
+  chart.add('line', [1, 5, 17, 12, 5, 10])
+
+
+For hermite you can also pass additionnal parameters to configure tangent behaviour:
+
+
+.. pygal-code::
+
+  chart = pygal.Line(interpolate='hermite', interpolation_parameters={'type': 'finite_difference'})
+  chart.add('line', [1, 5, 17, 12, 5, 10])
+
+
+.. pygal-code::
+
+  chart = pygal.Line(interpolate='hermite', interpolation_parameters={'type': 'cardinal', 'c': .75})
+  chart.add('line', [1, 5, 17, 12, 5, 10])
+
+
+.. pygal-code::
+
+  chart = pygal.Line(interpolate='hermite', interpolation_parameters={'type': 'kochanek_bartels', 'b': -1, 'c': 1, 't': 1})
+  chart.add('line', [1, 5, 17, 12, 5, 10])
+
+For more information see the `wikipedia article <http://en.wikipedia.org/wiki/Cubic_Hermite_spline#Finite_difference>`_
+
+
 Interpolation precision
 -----------------------
 
@@ -67,12 +108,12 @@ You can change the resolution of the interpolation with the help of `interpolati
 
 .. pygal-code::
 
-  chart = pygal.Line(interpolate='krogh', interpolation_precision=15)
+  chart = pygal.Line(interpolate='quadratic')
   chart.add('line', [1, 5, 17, 12, 5, 10])
 
 .. pygal-code::
 
-  chart = pygal.Line(interpolate='krogh', interpolation_precision=50)
+  chart = pygal.Line(interpolate='quadratic', interpolation_precision=3)
   chart.add('line', [1, 5, 17, 12, 5, 10])