[英]Contourplot matplotlib with every n-th line a different color
Is it possible to create a contourplot in Matplitlib with every n-th line a different color then the rest? 是否可以在Matplitlib中创建一个等高线图,使第n条线的颜色与其余颜色不同? I would like to have this because this less contourlines are showing not enough detail, and all the same color makes it too crowded.
我想要这样,是因为轮廓线少了,显示的细节不足,而且所有相同的颜色使它太拥挤了。 For example:
例如:
Yes, you can. 是的你可以。 You have to specify the colors for each level:
您必须为每个级别指定颜色:
levels = np.logspace(0, np.log10(Z.max()), 100 )[30:80]
color_levels = ['r' if (i+5) % 10 == 0 else 'k' for i in range(len(levels))]
pyplot.contour(X, Y, Z, locator=ticker.LogLocator(), colors=color_levels, levels=levels, lw=2, norm=colors.LogNorm(), vmin=1, vmax=Z.max())
Herein is Z
the results of the np.histogram2d()
. Z
是np.histogram2d()
的结果。 The underlying histogram2d is plotted with imshow
. 底层直方图
imshow
用imshow
绘制。 The [30:80]
slice on the levels is to prevent cluttering in the middle and edges of the image. 水平上的
[30:80]
切片是为了防止图像的中间和边缘混乱。
Of course you can edit the % 10
in the definition of color_levels
to every integer of your liking. 当然,您可以将
color_levels
定义中的% 10
编辑为您喜欢的每个整数。
This results in: 结果是:
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