Created
June 19, 2015 10:07
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Use Matplotlib colorbars in Mayavi
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from mayavi import mlab | |
from pylab import plt | |
from numpy import array, linspace | |
def adjust_colorbar(pts, cb_title, vmin, vmax): | |
pts.glyph.glyph_source.glyph_source.center = [0, 0, 0] | |
pts.glyph.glyph.color_mode = 'color_by_scalar' | |
pts.glyph.color_mode = 'color_by_scalar' | |
pts.glyph.glyph.scale_mode = 'data_scaling_off' | |
pts.glyph.glyph_source.glyph_source.center = [0, 0, 0] | |
# use mpl colormap | |
lut = pts.module_manager.scalar_lut_manager.lut.table.to_array() | |
cmap = plt.cm.coolwarm # @UndefinedVariable | |
# cmap = plt.cm.PRGn # @UndefinedVariable | |
# cmap = plt.cm.PuOr # @UndefinedVariable | |
# cmap = plt.get_cmap('BrBG') | |
cmaplist = array([cmap(i) for i in range(cmap.N)]) * 255 | |
lut = cmaplist | |
pts.module_manager.scalar_lut_manager.lut.table = lut | |
pts.module_manager.scalar_lut_manager.show_scalar_bar = True | |
pts.module_manager.scalar_lut_manager.show_legend = True | |
pts.module_manager.scalar_lut_manager.data_name = cb_title | |
pts.module_manager.scalar_lut_manager.data_range = array([vmin, vmax]) | |
# make color bar smaller | |
module_manager2 = pts.module_manager | |
module_manager2.scalar_lut_manager.scalar_bar_representation.minimum_size = array([1, 1]) | |
module_manager2.scalar_lut_manager.scalar_bar_representation.position2 = array([0.12657727, 0.84742547]) | |
module_manager2.scalar_lut_manager.scalar_bar_representation.position = array([0.86853129, 0.02276423]) | |
module_manager2.scalar_lut_manager.scalar_bar_representation.maximum_size = array([100000, 100000]) | |
return pts | |
x = linspace(0, 10, 10) | |
y = linspace(0, 10, 10) | |
z = linspace(0, 10, 10) | |
s = x | |
pts = mlab.points3d(x, y, z, s) | |
adjust_colorbar(pts, 'test', 0, 10) | |
mlab.gcf().scene.z_plus_view() | |
mlab.show() |
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