How to use scatterplot in a loop

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Tomaszzz 2022-3-18

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https://ww2.mathworks.cn/matlabcentral/answers/1674674-how-to-use-scatterplot-in-a-loop

评论： Tomaszzz 2022-3-18

采纳的回答： Simon Chan

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Hi all,

I have two data sets which are matrixes 100x18 double.

I want to scatterplot:

column 1(data1) vs column 1 (data2)

column 2(data1) vs column 2 (data2)

....

column 18 (data 1) vs column 18(data2)

The below:

for g=1:length(Data2) %for each column
    
    scatter(Data1(g), Data2(g));
end

produces:

I would like these data sets plotted in diffrent colours. Can you help please?

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采纳的回答

Simon Chan 2022-3-18

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https://ww2.mathworks.cn/matlabcentral/answers/1674674-how-to-use-scatterplot-in-a-loop#answer_920969

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Try this:

clear;clc;

Data1 = reshape(1:100*18,[],18);

Data2 = randi([50 100],100,18);

c = repmat(linspace(1,10,18),100,1);

scatter(Data1(:),Data2(:),[],c(:));

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Simon Chan 2022-3-18

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If everything plot into one figure, see below:

Or do you want to plot them in separate figures?

Data1 = randi([1 50],100,18); % Value for dummy data from 1 to 50 (Set #1)

Data2 = randi([50 100],100,18); % Value for dummy data from 50 to 100 (Set #2)

scatter(1:1800,Data1(:),[],[1 0 0]); % 1st set

hold on

scatter(1:1800,Data2(:),[],[0 1 0]); % 2nd set

hold off

Tomaszzz 2022-3-18

Thanks @Simon Chan your first answer is what actually wanted

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MATLAB Language Fundamentals Matrices and Arrays Resizing and Reshaping Matrices

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