Save figure name as string

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DavidL88
DavidL88 2021-12-14
回答： Image Analyst 2021-12-14
How do I save a file name as a string? hFig is the Figure I want to save and str is the name I want to save this figure as. When I run it i get the below message:
Error using saveas (line 96)
Invalid filename.
str = 'ERP_GRP_1'
saveas(hFig, fullfile(path, [str '.jpeg']));

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采纳的回答

cr
cr 2021-12-14
saveas(hfig,[directoryPath, str, '.jpeg'])
directoryPath is the string with ending in fileseperator / or \ depending on your OS. If your directory path string doesn't end in it you may include filesep() in the brackets.
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Steven Lord
Steven Lord 2021-12-14
You can still use fullfile, you just need to assemble the file name separately.
directoryPath='*\Desktop\EEG figures';
saveas(hFig, fullfile(directoryPath, [str, '.jpeg']))
But the fact that your file path starts with a wildcard seems problematic. I also would recommend against storing your data on the Desktop; sure it's convenient to access manually by clicking on the folder on the desktop, but it makes it more difficult to access the data programmatically.

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更多回答（1 个）

Image Analyst
Image Analyst 2021-12-14
If you have r2020b or later you should use exportgraphics().
And you should not use JPG format unless you're willing to have horrible jpeg compression artifacts.
str = 'ERP_GRP_1';
% Create filename with folder prepended.
folder = pwd; % Or whatever you want.
fullFileName = fullfile(folder, [str, '.png']);
% Save hFig
exportgraphics(hFig, fullFileName);

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