From b856eb85e48d5530fdd6547e0b501e8139a13f6f Mon Sep 17 00:00:00 2001
From: Guillaume Ayoub <guillaume.ayoub@kozea.fr>
Date: Tue, 25 Jun 2013 19:14:48 +0200
Subject: [PATCH 1/6] Interpolation is only quadratic and cubic

---
 pages/interpolations.rst | 16 +++-------------
 1 file changed, 3 insertions(+), 13 deletions(-)

diff --git a/pages/interpolations.rst b/pages/interpolations.rst
index df91df9..e15cc12 100644
--- a/pages/interpolations.rst
+++ b/pages/interpolations.rst
@@ -12,18 +12,8 @@ Interpolations
 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:
@@ -53,7 +43,7 @@ With krogh interpolation:
 
 .. pygal-code::
 
-  chart = pygal.Line(interpolate='krogh')
+  chart = pygal.Line(interpolate='quadratic')
   chart.add('line', [1, 5, 17, 12, 5, 10])
 
 
@@ -67,12 +57,12 @@ 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=50)
   chart.add('line', [1, 5, 17, 12, 5, 10])
 
 

From 60a66aaf27061a5d567ae66f4231142c0d2b5f18 Mon Sep 17 00:00:00 2001
From: Guillaume Ayoub <guillaume.ayoub@kozea.fr>
Date: Tue, 25 Jun 2013 19:15:51 +0200
Subject: [PATCH 2/6] Interpolation is not done by scipy anymore

---
 pages/home.rst           | 2 --
 pages/interpolations.rst | 3 +--
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/pages/home.rst b/pages/home.rst
index 2d11d4c..1ba959d 100644
--- a/pages/home.rst
+++ b/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/>`_.
diff --git a/pages/interpolations.rst b/pages/interpolations.rst
index e15cc12..3a19ada 100644
--- a/pages/interpolations.rst
+++ b/pages/interpolations.rst
@@ -9,8 +9,7 @@ Interpolations
 
 .. contents::
 
-Interpolations need the `scipy python module <http://www.scipy.org/>`_.
-To enable it just specify the interpolation type to:
+To enable interpolation, just specify the interpolation type to:
 
 - quadratic
 - cubic

From c85fab6772a4e68c9674102569e73cfa7857c62e Mon Sep 17 00:00:00 2001
From: Guillaume Ayoub <guillaume.ayoub@kozea.fr>
Date: Tue, 25 Jun 2013 19:16:31 +0200
Subject: [PATCH 3/6] Fix title

---
 pages/interpolations.rst | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pages/interpolations.rst b/pages/interpolations.rst
index 3a19ada..06fc335 100644
--- a/pages/interpolations.rst
+++ b/pages/interpolations.rst
@@ -35,8 +35,8 @@ With cubic interpolation:
   chart = pygal.Line(interpolate='cubic')
   chart.add('line', [1, 5, 17, 12, 5, 10])
 
-With krogh interpolation:
--------------------------
+With quadratic interpolation:
+-----------------------------
 
 ``interpolate``
 

From 6104f951838abba9c9e193abbd35a857acf509c3 Mon Sep 17 00:00:00 2001
From: Guillaume Ayoub <guillaume.ayoub@kozea.fr>
Date: Tue, 25 Jun 2013 19:17:31 +0200
Subject: [PATCH 4/6] Use an interesting value for interpolation precision

---
 pages/interpolations.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pages/interpolations.rst b/pages/interpolations.rst
index 06fc335..56d18cc 100644
--- a/pages/interpolations.rst
+++ b/pages/interpolations.rst
@@ -61,7 +61,7 @@ You can change the resolution of the interpolation with the help of `interpolati
 
 .. pygal-code::
 
-  chart = pygal.Line(interpolate='quadratic', interpolation_precision=50)
+  chart = pygal.Line(interpolate='quadratic', interpolation_precision=3)
   chart.add('line', [1, 5, 17, 12, 5, 10])
 
 

From 874928501c19e1aa1f4728a8146f113a1e57464a Mon Sep 17 00:00:00 2001
From: Mounier Florian <paradoxxx.zero@gmail.com>
Date: Tue, 25 Jun 2013 19:43:36 +0200
Subject: [PATCH 5/6] Update the interpolation reference for a more exhaustive
 one

---
 pages/interpolations.rst | 62 ++++++++++++++++++++++++++++++++++++----
 1 file changed, 57 insertions(+), 5 deletions(-)

diff --git a/pages/interpolations.rst b/pages/interpolations.rst
index 56d18cc..625d079 100644
--- a/pages/interpolations.rst
+++ b/pages/interpolations.rst
@@ -9,11 +9,6 @@ Interpolations
 
 .. contents::
 
-To enable interpolation, just specify the interpolation type to:
-
-- quadratic
-- cubic
-
 
 Without interpolation:
 ----------------------
@@ -35,6 +30,7 @@ With cubic interpolation:
   chart = pygal.Line(interpolate='cubic')
   chart.add('line', [1, 5, 17, 12, 5, 10])
 
+
 With quadratic interpolation:
 -----------------------------
 
@@ -46,6 +42,62 @@ With quadratic interpolation:
   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='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
 -----------------------
 

From cbabce39134d666e76f4c80166706902288fe58a Mon Sep 17 00:00:00 2001
From: Guillaume Ayoub <guillaume.ayoub@kozea.fr>
Date: Tue, 5 Nov 2013 12:07:22 +0100
Subject: [PATCH 6/6] Add links to Fedora and Gentoo packages

---
 pages/download.rst | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pages/download.rst b/pages/download.rst
index 6e55527..eb9c38d 100644
--- a/pages/download.rst
+++ b/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/>`_.