部分透明的散点图，但带有纯色条 [英] Partially transparent scatter plot, but with a solid color bar

问题描述

在Python中，使用Matplotlib，如何简单地创建具有透明度(alpha <1)但具有代表其颜色值但alpha = 1的色条的散点图?

In Python, with Matplotlib, how to simply do a scatter plot with transparency (alpha < 1), but with a color bar that represents their color value, but has alpha = 1?

使用from pylab import *; scatter(range(10), arange(0, 100, 10), c=range(10), alpha=0.2); color_bar = colorbar()可以得到以下内容:

Here is what one gets, with from pylab import *; scatter(range(10), arange(0, 100, 10), c=range(10), alpha=0.2); color_bar = colorbar():

如何使颜色条不透明?

PS :我尝试了color_bar.set_alpha(1); draw()，但这没做任何事情……

PS: I tried color_bar.set_alpha(1); draw(), but this did not do anything…

推荐答案

好的，我发现了一种比较干净的方法:(使用问题中的ColorBar对象)

Alright, I found one way to do it, that looks relatively clean: (using the ColorBar object from the question)

color_bar.set_alpha(1)
color_bar.draw_all()
# pylab.draw() or pyplot.draw() might be necessary

尽管确认这是进行过程中最可靠的方法，这将是非常棒的！ :)

It would be great to get a confirmation that this is the most robust way to proceed, though! :)

这篇关于部分透明的散点图，但带有纯色条的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！