conmatrix.py 文件源码

def diverge_map(low=(239/255., 65/255., 50/255.),
                high=(39/255., 184/255., 148/255.)):
    """Low and high are colors that will be used for the two
    ends of the spectrum. they can be either color strings
    or rgb color tuples
    """
    c = mcolors.ColorConverter().to_rgb
    if isinstance(low, basestring): low = c(low)
    if isinstance(high, basestring): high = c(high)
    return make_colormap([low, c('white'), 0.5, c('white'), high])