Save while loop data?

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Katerina Tetzloff 2015-10-23

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评论： Mouli 2023-6-12

If I have a while loop that records certain data points, I know how to fprintf in each time the loop goes around, but how can I save these to a matrix without the values getting replaced each time? The loop records the (x,y) coordinates of the cursor every time I click the mouse, and I want to export this into a matrix with all the x values and with all the y values if possible.

Thank you!

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Mohammad Abouali 2015-10-23

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编辑：Mohammad Abouali 2015-10-23

在 MATLAB Online 中打开

You can do it like this:

% first initialize myCoordList to an empty matrix
myCoordList=[];
while (some condition)
 % some code that get's your x and y code
 myCoordList=[myCoordList; [x, y]];
end

This way as you get more x and y pairs another row is added to myCoordList.

instead of using

myCoordList=[myCoordList; [x, y]];

you can also use:

myCoordList(end+1,:)=[x, y];

(Just use one of them not both)