paraview colormaps

paramap.py

_para1 = {'red': ((0.0, 0.019390722, 0.019390722), (0.125, 0.355334722,
                  0.355334722), (0.25, 0.565570631, 0.565570631), (0.375,
                  0.76583663, 0.76583663), (0.5, 0.966006412, 0.966006412),
                  (0.625, 0.953403586, 0.953403586), (0.75, 0.906621393,
                  0.906621393), (0.875, 0.831556904, 0.831556904), (1.0,
                  0.732691891, 0.732691891)),

          'green': ((0.0, 0.390501895, 0.390501895), (0.125, 0.524474908,
                    0.524474908), (0.25, 0.665714642, 0.665714642), (0.375,
                    0.813150205, 0.813150205), (0.5, 0.96603773, 0.96603773),
                    (0.625, 0.766601281, 0.766601281), (0.75, 0.568733213,
                    0.568733213), (0.875, 0.365112385, 0.365112385), (1.0,
                    0.098811709, 0.098811709)),

          'blue': ((0.0, 0.586262521, 0.586262521), (0.125, 0.679588113,
                   0.679588113), (0.25, 0.773984466, 0.773984466), (0.375,
                   0.869436965, 0.869436965), (0.5, 0.965934958, 0.965934958),
                   (0.625, 0.713328364, 0.713328364), (0.75, 0.473912925,
                   0.473912925), (0.875, 0.247843798, 0.247843798), (1.0,
                   0.00679232, 0.00679232))
          }

_para2 = {'red': ((0.0, 0.07514311, 0.07514311), (0.03125, 0.247872569,
                  0.247872569), (0.0625, 0.339526309, 0.339526309), (0.09375,
                  0.409505078, 0.409505078), (0.125, 0.468487184, 0.468487184),
                  (0.15625, 0.520796675, 0.520796675), (0.1875, 0.568724526,
                  0.568724526), (0.21875, 0.613686735, 0.613686735), (0.25,
                  0.656658579, 0.656658579), (0.28125, 0.698372844,
                  0.698372844), (0.3125, 0.739424025, 0.739424025), (0.34375,
                  0.780330104, 0.780330104), (0.375, 0.821573924, 0.821573924),
                  (0.40625, 0.863634967, 0.863634967), (0.4375, 0.907017747,
                  0.907017747), (0.46875, 0.936129275, 0.936129275), (0.5,
                  0.943467973, 0.943467973), (0.53125, 0.990146732,
                  0.990146732), (0.5625, 1.0, 1.0), (0.59375, 1.0, 1.0),
                  (0.625, 1.0, 1.0), (0.65625, 1.0, 1.0), (0.6875, 1.0, 1.0),
                  (0.71875, 1.0, 1.0), (0.75, 1.0, 1.0), (0.78125, 1.0, 1.0),
                  (0.8125, 1.0, 1.0), (0.84375, 1.0, 1.0), (0.875, 1.0, 1.0),
                  (0.90625, 1.0, 1.0), (0.9375, 1.0, 1.0), (0.96875,
                  0.961891484, 0.961891484), (1.0, 0.916482116, 0.916482116)),

          'green': ((0.0, 0.468049805, 0.468049805), (0.03125, 0.498782363,
                    0.498782363), (0.0625, 0.528909511, 0.528909511), (0.09375,
                    0.558608486, 0.558608486), (0.125, 0.588057293,
                    0.588057293), (0.15625, 0.617435078, 0.617435078), (0.1875,
                    0.646924167, 0.646924167), (0.21875, 0.676713218,
                    0.676713218), (0.25, 0.707001303, 0.707001303), (0.28125,
                    0.738002964, 0.738002964), (0.3125, 0.769954435,
                    0.769954435), (0.34375, 0.803121429, 0.803121429), (0.375,
                    0.837809045, 0.837809045), (0.40625, 0.874374691,
                    0.874374691), (0.4375, 0.913245283, 0.913245283), (0.46875,
                    0.938743558, 0.938743558), (0.5, 0.943498599, 0.943498599),
                    (0.53125, 0.928791426, 0.928791426), (0.5625, 0.88332677,
                    0.88332677), (0.59375, 0.833985467, 0.833985467), (0.625,
                    0.788626485, 0.788626485), (0.65625, 0.746206642,
                    0.746206642), (0.6875, 0.70590052, 0.70590052), (0.71875,
                    0.667019783, 0.667019783), (0.75, 0.6289553, 0.6289553),
                    (0.78125, 0.591130233, 0.591130233), (0.8125, 0.552955184,
                    0.552955184), (0.84375, 0.513776083, 0.513776083), (0.875,
                    0.472800903, 0.472800903), (0.90625, 0.428977855,
                    0.428977855), (0.9375, 0.380759558, 0.380759558), (0.96875,
                    0.313155629, 0.313155629), (1.0, 0.236630659,
                    0.236630659)),

          'blue': ((0.0, 1.0, 1.0), (0.03125, 1.0, 1.0), (0.0625, 1.0, 1.0),
                   (0.09375, 1.0, 1.0), (0.125, 1.0, 1.0), (0.15625, 1.0, 1.0),
                   (0.1875, 1.0, 1.0), (0.21875, 1.0, 1.0), (0.25, 1.0, 1.0),
                   (0.28125, 1.0, 1.0), (0.3125, 1.0, 1.0), (0.34375, 1.0,
                   1.0), (0.375, 1.0, 1.0), (0.40625, 1.0, 1.0), (0.4375, 1.0,
                   1.0), (0.46875, 0.983038586, 0.983038586), (0.5,
                   0.943398095, 0.943398095), (0.53125, 0.917447482,
                   0.917447482), (0.5625, 0.861943246, 0.861943246), (0.59375,
                   0.803839606, 0.803839606), (0.625, 0.750707739,
                   0.750707739), (0.65625, 0.701389973, 0.701389973), (0.6875,
                   0.654994046, 0.654994046), (0.71875, 0.610806959,
                   0.610806959), (0.75, 0.568237474, 0.568237474), (0.78125,
                   0.526775617, 0.526775617), (0.8125, 0.485962266,
                   0.485962266), (0.84375, 0.445364274, 0.445364274), (0.875,
                   0.404551679, 0.404551679), (0.90625, 0.363073592,
                   0.363073592), (0.9375, 0.320428137, 0.320428137), (0.96875,
                   0.265499262, 0.265499262), (1.0, 0.209939162, 0.209939162))
          }


if __name__ == "__main__":
    from matplotlib import colors
    para1 = colors.LinearSegmentedColormap('para1', _para1, 256)
    para2 = colors.LinearSegmentedColormap('para2', _para2, 256)


    ## from skimage import data
    ## img = data.camera()

    ## import matplotlib.pyplot as plt
    ## f, (ax0, ax1) = plt.subplots(1, 2)

    ## ax0.imshow(img, cmap=para1)
    ## ax1.imshow(img, cmap=para2)

    ## plt.show()


    # Modified from the Mayavi example:
    #
    # Author: Gael Varoquaux <gael.varoquaux@normalesup.org>
    # Copyright (c) 2007, Enthought, Inc.
    # License: BSD Style.

    from numpy import cos, sin, pi, sqrt, mgrid, linspace
    from mayavi import mlab

    mlab.figure(fgcolor=(0, 0, 0), bgcolor=(1, 1, 1))
    u, v = mgrid[-0.035:pi:0.01, -0.035:pi:0.01]

    X = 2/3.* (cos(u)* cos(2*v)
            + sqrt(2)* sin(u)* cos(v))* cos(u) / (sqrt(2) - sin(2*u)* sin(3*v))
    Y = 2/3.* (cos(u)* sin(2*v) - sqrt(2)* sin(u)* sin(v))* cos(u) / (sqrt(2)
            - sin(2*u)* sin(3*v))
    Z = -sqrt(2)* cos(u)* cos(u) / (sqrt(2) - sin(2*u)* sin(3*v))
    S = sin(u)

    mesh = mlab.mesh(X, Y, Z, scalars=S, colormap='YlGnBu')
    cm = para2(linspace(0, 1, 256), bytes=True)
    mesh.module_manager.scalar_lut_manager.lut.table = cm

    mlab.draw()
    mlab.view(.0, -5.0, 4)
    mlab.show()