How to add a string to a filename while saving plots

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Manal Shakeel
Manal Shakeel 2017-4-18
评论： Manal Shakeel 2017-4-25
I have a code that runs a for loop through a folder, reads the files, plots certain variables for each file and saves the plot as a png with the filename.
[pathstr,name,ext] = fileparts(file.name); print('-dpng',name,'d');
e.g: For a file called test the plot is saved as test.png
Now I want to plot multiple graphs for the same file and hence save the file as test_angle.png for example.
Any idea how I can do that? In python I can do so using '+'. I tried using strcat and append but I think I am doing something wrong.

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Stephen23
Stephen23 2017-4-18
Use sprintf and fullfile. You will find a complete explanation here:
https://www.mathworks.com/matlabcentral/answers/57446-faq-how-can-i-process-a-sequence-of-files
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Stephen23
Stephen23 2017-4-18
编辑：Stephen23 2017-4-18
@Manal Shakeel: like I said, use sprintf:
sprintf('%s_angle%s',name,ext)
or perhaps:
sprintf('%s_%s_angle%s',name,'a',ext)
and I am sure you can figure out how to put that into a loop.

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Thorsten
Thorsten 2017-4-18
编辑：Thorsten 2017-4-18
name = 'test';
Either
newname = [name, '_angle'];
or
newname = strcat(name, '_angle');
or, as Stephen suggested, using sprintf
newname = sprintf('%s_angle', name);

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