Problem with saving plots

Question

Giggs B. 2022-3-17

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1674269-problem-with-saving-plots

评论： Giggs B. 2022-3-17

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

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Answer 1

Image Analyst 2022-3-17

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1674269-problem-with-saving-plots#answer_920534

在 MATLAB Online 中打开

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