我的色带不均匀，我希望 0 为白色。所有负色必须是蓝色的，所有正色必须是红色的。我当前尝试显示 0 偏蓝色和 0.7 白色。
有没有办法将0设置为白色？
import numpy as np
import matplotlib.colors as colors
from matplotlib import pyplot as m
bounds_min = np.arange(-2, 0, 0.1)
bounds_max = np.arange(0, 4.1, 0.1)
bounds = np.concatenate((bounds_min, bounds_max), axis=None)
norm = colors.BoundaryNorm(boundaries=bounds, ncolors=256) # I found this on the internet and thought this would solve my problem. But it doesn't...
m.pcolormesh(xx, yy, interpolated_grid_values, norm=norm, cmap='RdBu_r')