控制散点图条的颜色 [英] Controlling scatterhist bar colors

问题描述

我试图使scatterhist图中的条形与标记具有相同的颜色:

I was trying to make the bars in my scatterhist plot be of the same color as the markers:

x = randn(1,20);
y = randn(1,20);
myColour = [1 0 0]; % red
scatterhist(x, y, 'Color', myColour);
mygca = get(gca,'children');
set(mygca,'markerfacecolor', myColour);

但是，条形的颜色略有不同，即偏红色，[249 96 96]:

However, the bars are of a slightly different color, namely a reddish hue, [249 96 96]:

Scatterhist 文档似乎表明条形颜色仅跟随标记颜色，在这种情况下不会发生.

The Scatterhist documentation seems to suggest bar colors just follow marker color, which in this case does not happen.

如何在MATLAB R2016a上控制scatterhist条的颜色?

How can I control color of the scatterhist bars, on MATLAB R2016a?

推荐答案

之所以会发生这种情况，是因为这些条具有 alpha (透明度)设置.

This happens because the bars have an alpha (transparency) setting.

要解决此问题，请确保将'FaceAlpha'设置设置为1.例如:

To fix this, make sure the 'FaceAlpha' setting is set to 1. For example:

x = randn(1,20);
y = randn(1,20);
myColour = [1 0 0];
hSh = scatterhist(x, y, 'Color', myColour);
hSh(1).Children.MarkerFaceColor = myColour;
hSh(2).Children.FaceAlpha = 1;
hSh(3).Children.FaceAlpha = 1;

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