Add coolwarm color map. Revised patch. Originally submitted by Sameer Grover to matplotlib-devel on 18 Jul 2011.

cgohlke · cgohlke · commit 4772c9d66e6f · 2011-09-21T17:22:09.000-07:00
diff --git a/lib/matplotlib/_cm.py b/lib/matplotlib/_cm.py
@@ -1628,6 +1628,115 @@ def gfunc32(x):
         'blue': lambda x: 1 - x,
 }
 
+# This cool to warm color map was generated from Table 2 of
+# "Diverging Color Maps for Scientific Visualization (Expanded)"
+# by Kenneth Moreland. <http://www.cs.unm.edu/~kmorel/documents/ColorMaps/>
+_coolwarm_data = {
+    'red': [
+        (0.0, 0.23137255, 0.23137255),
+        (0.03125, 0.26666668, 0.26666668),
+        (0.0625, 0.3019608, 0.3019608),
+        (0.09375, 0.34117648, 0.34117648),
+        (0.125, 0.38431373, 0.38431373),
+        (0.15625, 0.42352942, 0.42352942),
+        (0.1875, 0.46666667, 0.46666667),
+        (0.21875, 0.50980395, 0.50980395),
+        (0.25, 0.5529412, 0.5529412),
+        (0.28125, 0.59607846, 0.59607846),
+        (0.3125, 0.63921571, 0.63921571),
+        (0.34375, 0.68235296, 0.68235296),
+        (0.375, 0.72156864, 0.72156864),
+        (0.40625, 0.76078433, 0.76078433),
+        (0.4375, 0.80000001, 0.80000001),
+        (0.46875, 0.83529413, 0.83529413),
+        (0.5, 0.86666667, 0.86666667),
+        (0.53125, 0.89803922, 0.89803922),
+        (0.5625, 0.9254902, 0.9254902),
+        (0.59375, 0.94509804, 0.94509804),
+        (0.625, 0.96078432, 0.96078432),
+        (0.65625, 0.96862745, 0.96862745),
+        (0.6875, 0.96862745, 0.96862745),
+        (0.71875, 0.96862745, 0.96862745),
+        (0.75, 0.95686275, 0.95686275),
+        (0.78125, 0.94509804, 0.94509804),
+        (0.8125, 0.9254902, 0.9254902),
+        (0.84375, 0.89803922, 0.89803922),
+        (0.875, 0.87058824, 0.87058824),
+        (0.90625, 0.83529413, 0.83529413),
+        (0.9375, 0.79607844, 0.79607844),
+        (0.96875, 0.75294119, 0.75294119),
+        (1.0, 0.70588237, 0.70588237)],
+    'green': [
+        (0.0, 0.29803923, 0.29803923),
+        (0.03125, 0.35294119, 0.35294119),
+        (0.0625, 0.40784314, 0.40784314),
+        (0.09375, 0.45882353, 0.45882353),
+        (0.125, 0.50980395, 0.50980395),
+        (0.15625, 0.55686277, 0.55686277),
+        (0.1875, 0.60392159, 0.60392159),
+        (0.21875, 0.64705884, 0.64705884),
+        (0.25, 0.6901961, 0.6901961),
+        (0.28125, 0.72549021, 0.72549021),
+        (0.3125, 0.76078433, 0.76078433),
+        (0.34375, 0.78823531, 0.78823531),
+        (0.375, 0.81568629, 0.81568629),
+        (0.40625, 0.83529413, 0.83529413),
+        (0.4375, 0.8509804, 0.8509804),
+        (0.46875, 0.85882354, 0.85882354),
+        (0.5, 0.86666667, 0.86666667),
+        (0.53125, 0.84705883, 0.84705883),
+        (0.5625, 0.82745099, 0.82745099),
+        (0.59375, 0.80000001, 0.80000001),
+        (0.625, 0.76862746, 0.76862746),
+        (0.65625, 0.73333335, 0.73333335),
+        (0.6875, 0.69411767, 0.69411767),
+        (0.71875, 0.65098041, 0.65098041),
+        (0.75, 0.60392159, 0.60392159),
+        (0.78125, 0.5529412, 0.5529412),
+        (0.8125, 0.49803922, 0.49803922),
+        (0.84375, 0.43921569, 0.43921569),
+        (0.875, 0.3764706, 0.3764706),
+        (0.90625, 0.3137255, 0.3137255),
+        (0.9375, 0.24313726, 0.24313726),
+        (0.96875, 0.15686275, 0.15686275),
+        (1.0, 0.015686275, 0.015686275)],
+    'blue': [
+        (0.0, 0.75294119, 0.75294119),
+        (0.03125, 0.80000001, 0.80000001),
+        (0.0625, 0.84313726, 0.84313726),
+        (0.09375, 0.88235295, 0.88235295),
+        (0.125, 0.91764706, 0.91764706),
+        (0.15625, 0.94509804, 0.94509804),
+        (0.1875, 0.96862745, 0.96862745),
+        (0.21875, 0.98431373, 0.98431373),
+        (0.25, 0.99607843, 0.99607843),
+        (0.28125, 1.0, 1.0),
+        (0.3125, 1.0, 1.0),
+        (0.34375, 0.99215686, 0.99215686),
+        (0.375, 0.97647059, 0.97647059),
+        (0.40625, 0.95686275, 0.95686275),
+        (0.4375, 0.93333334, 0.93333334),
+        (0.46875, 0.90196079, 0.90196079),
+        (0.5, 0.86666667, 0.86666667),
+        (0.53125, 0.81960785, 0.81960785),
+        (0.5625, 0.77254903, 0.77254903),
+        (0.59375, 0.72549021, 0.72549021),
+        (0.625, 0.67843139, 0.67843139),
+        (0.65625, 0.627451, 0.627451),
+        (0.6875, 0.58039218, 0.58039218),
+        (0.71875, 0.52941179, 0.52941179),
+        (0.75, 0.48235294, 0.48235294),
+        (0.78125, 0.43529412, 0.43529412),
+        (0.8125, 0.3882353, 0.3882353),
+        (0.84375, 0.34509805, 0.34509805),
+        (0.875, 0.3019608, 0.3019608),
+        (0.90625, 0.25882354, 0.25882354),
+        (0.9375, 0.21960784, 0.21960784),
+        (0.96875, 0.18431373, 0.18431373),
+        (1.0, 0.14901961, 0.14901961)]
+}
+
+
 datad = {
     'afmhot': _afmhot_data,
     'autumn': _autumn_data,
@@ -1700,4 +1809,4 @@ def gfunc32(x):
 datad['gist_rainbow']=_gist_rainbow_data
 datad['gist_stern']=_gist_stern_data
 datad['gist_yarg']=_gist_yarg_data
-
+datad['coolwarm']=_coolwarm_data
