Save matrix as a spreadsheet image
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I am trying to programatically save a matrix as a .jpg or .png file. The output should be a jpg that looks like a spreadsheet, similar to an excel document. For example, if the matrix was:
1 2 3
4 5 6
7 8 9
The output of the program should look something like this (screenshot from excel) in a jpg or png file:
What function should I use to make this happen?
Thank you!
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Adam Danz
2022년 7월 13일
편집: Adam Danz
2022년 7월 13일
Storing numeric data in images makes it difficult to work with those data later on but I remember a use-case for this back when I wanted to quickly snap-shot small data sets for visual reference (still not sure it was the best approach).
Nevertheless, if your matrix fits on a single page, you could put the data in a uitable and then extract the figure using exportapp. Note that precision may be lost since there is a finite number of decimal places that will appear on the table. See uitable documentation to learn how to apply column and row labels.
x = rand(10,5)*100;
fig = uifigure(); % must be uifigure
uit = uitable(fig,'Units','Normalize','Position',[0 0 1 1],'Data', x)
After the figure and uitable are rendered, you can export the figure as an image using exportapp.
% drawnow % only needed if calling exportapp immediately after uitable.
% pause(.5) % only needed if calling exportapp immediately after uitable.
exportapp(fig, 'mytable.png')
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