Problem with saving plots

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Giggs B.
Giggs B. on 17 Mar 2022
Commented: Giggs B. on 17 Mar 2022
I have the below code. I want to save the file in bmp format.
clearvars
indir = '.'; %current directory
outdir = 'C:\Users\gagan\Downloads\testing_lab\Stage-1 testing\plots'; %where to write the results
files = dir( fullfile(indir, '*.csv'));
for file = files'
inname = fullfile(file.folder, file.name);
n = readmatrix(inname);
m = rescale(n, -1, 1, 'InputMin',2301,'InputMax',3642)+0.527;
[filepath,name,ext] = fileparts(inname);
outname = fullfile(outdir, name + '.bmp');
plot(m) ; % use your variable in the plot
saveas(gcf,outname)
end
But when I run the below code I get error as:
Arrays have incompatible sizes for this operation.
Error in automated_making_plots (line 11)
outname = fullfile(outdir, name + '.bmp');
So, to resolve, I modify the below two line in the code above as:
outname = fullfile(outdir, name);
saveas(gcf,outname,'bmp')
Now, my code runs but the files that it saves is not in the bmp format but MATLAB is instead taking the string after the "." as the fomat. For example my file is "T15.11.02.38.csv", so instead of taking name as "T15.11.02.38.bmp", it creates file but with extension ".38".
Can someone please help? Thanks

Accepted Answer

Image Analyst
Image Analyst on 17 Mar 2022
Try this:
clearvars
indir = '.'; %current directory
outdir = 'C:\Users\gagan\Downloads\testing_lab\Stage-1 testing\plots'; %where to write the results
files = dir( fullfile(indir, '*.csv'));
for k = 1 : length(files)
inname = fullfile(files(k).folder, files(k).name);
n = readmatrix(inname);
m = rescale(n, -1, 1, 'InputMin',2301,'InputMax',3642)+0.527;
% Now plot.
plot(m) ; % use your variable in the plot
% Now that you have a figure up, save the figure window
[~, nameNoExt, ext] = fileparts(inname);
fullOutputFileName = fullfile(outdir, [nameNoExt, ext]);
exportgraphics(gcf, fullOutputFileName);
end
  5 Comments
Giggs B.
Giggs B. on 17 Mar 2022
Thank you!

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