How to set color of scatterplot bars?

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z8080 2018-5-22

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https://ww2.mathworks.cn/matlabcentral/answers/401930-how-to-set-color-of-scatterplot-bars

评论： Sandro Lecci 2018-5-22

I was trying to have 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);

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

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

How can I control color of scatterhist bars, on Matlab 2016a?

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Answer 1

Sandro Lecci 2018-5-22

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https://ww2.mathworks.cn/matlabcentral/answers/401930-how-to-set-color-of-scatterplot-bars#answer_321367

编辑：Sandro Lecci 2018-5-22

在 MATLAB Online 中打开

dear z8080,

Somehow the histograms are plotted with a FaceAlpha value of 0.6. This makes the red color looking "flatter". To restore it to the correct value type:

x = randn(1,20);
y = randn(1,20);
myColour = [1 0 0]; % red
SH = scatterhist(x, y, 'Color', myColour);
mygca = get(SH,'children');
mygca{2}.FaceAlpha = 1;
mygca{3}.FaceAlpha = 1;
set(mygca{1},'markerfacecolor', myColour);