Vertical bars in scatter plot

Question

Anouk Heuvelmans 2023-1-2

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https://ww2.mathworks.cn/matlabcentral/answers/1887282-vertical-bars-in-scatter-plot

评论： Anouk Heuvelmans 2023-1-3

Hi everyone,

I have a scatterplot with points on 12 horizontal lines. Sometimes, the points synchronize and in this case, I want to put a semi-transparant black bar in the background, spanning the period of overlap.

The data for my scatterplot is in a matrix with [y,x]. The data for the synchronization is in a matrix with [x,duration of the synchronized period].

I was wondering if, and how, it would be possible to create a grey bar in the background of the scatterplot. I've added an example of the scatterplot without bar below, and have in one of the synchronized events made a grey bar as I mean to have it in powerpoint.

This is the code for my scatter plot:

figure();
scatter(peaktrains(:,2)./1000000,peaktrains(:,1),"|",'MarkerEdgeColor','#097F97')

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Answer 1

Cameron 2023-1-2

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1887282-vertical-bars-in-scatter-plot#answer_1139752

在 MATLAB Online 中打开

x = randi([200 800],800,1); %random x data for scatter
y = randi([1 12],800,1); %random y data for scatter
scatter(x,y,'b')
hold on
barx = [475,475,490,490]; %bar x data
bary = [0,12,12,0]; %bar y data
fill(barx,bary,[0.95,0.95,0.95],'FaceAlpha',0.3)
hold off