更改颜色范围3d图Matplotlib

Question

我正在尝试绘制3d图，但是颜色范围太小，以至于它仅覆盖z轴可以具有的一小部分值。我该如何解决？

我附上代码和得到的图像：

fig = plt.figure()
ax = fig.gca(projection='3d')
surf = ax.plot_surface(B , ENERGY, result_plot, cmap=cm.Spectral_r , linewidth=0.0 ,antialiased =False)

colorbar( surf, shrink=0.5, aspect=3)


ax.view_init(30, 45)
plt.show()

Answer 1

将来请提供minimal and verifiable example。颜色限制是根据您的数据确定的。因此，我不能完全确定您的数据支持的值比显示的更多。使用docs中的示例，我们可以使用vmin和vmax来强制限制。

# This import registers the 3D projection, but is otherwise unused.
from mpl_toolkits.mplot3d import Axes3D  # noqa: F401 unused import

import matplotlib.pyplot as plt
from matplotlib import cm
from matplotlib.ticker import LinearLocator, FormatStrFormatter
import numpy as np


fig = plt.figure()
ax = fig.gca(projection='3d')

# Make data.
X = np.arange(-5, 5, 0.25)
Y = np.arange(-5, 5, 0.25)
X, Y = np.meshgrid(X, Y)
R = np.sqrt(X**2 + Y**2)
Z = np.sin(R)

# Plot the surface.
surf = ax.plot_surface(X, Y, Z, cmap=cm.coolwarm,
                       linewidth=0, antialiased=False, vmin = -10, vmax = 10)

# Customize the z axis.
ax.set_zlim(-1.01, 1.01)
ax.zaxis.set_major_locator(LinearLocator(10))
ax.zaxis.set_major_formatter(FormatStrFormatter('%.02f'))

# Add a color bar which maps values to colors.
fig.colorbar(surf, shrink=0.5, aspect=5)

plt.show()