Solve Eror Saveas nome

Hello

I try to save figure gcf, in different folder.

Each loop a figure, in a new folder.

name = [ "Pedestal_AC"
"Pc_Ecart"
"ratioE2FWHM"
"ratioDT_AC"
"lim75E_AC"
"RatioI"]

kk=1;
    for zz=1:6%length(name)
        folder = convertStringsToChars(name(zz));
if ~isdir(folder)
    mkdir(folder);
end
cd (folder)
    
        frame = getframe(zz);
        im = frame2im(frame);
        [imind,cm] = rgb2ind(im,256);
        figure(zz)
%          saveas(gcf,[convertStringsToChars(name(zz)) '\'  strcat(num2str(kk),'.png')])
                 saveas(gcf,[  num2str(kk)  '.png'])
    end
    

If I run [ num2str(kk) '.png'] , it provides me : '1.png'

but if I run the code :

Error using matlab.graphics.internal.name (line 112)
Cannot create output file '.\1.png'.

Can not understand

If you have solution I will take it

regards

[Walter Roberson]

note that you never cd back.

You should avoid using cd. Use fullfile(folder, kk+".png")

Also you are assuming that if the folder already exists that you have permission to write into it, which might not be true

Answer 1

[Rik]

Perhaps you meant saveas(gcf,[num2str(zz) '.png']) instead, since you never define kk in your code.

[MartinM]

Dear Rik

Thank for your answer,

kk is define on the top of the code, I only paste a part.

Sorry for that.

I add it

[MartinM]

I have try

saveas(gcf,[sprintf('%1d',kk),'.png'])

saveas(gcf,[convertStringsToChars(name(zz)) '\' strcat(num2str(kk),'.png')])

[Rik]

Neither of those should result in the error you posted. Perhaps you want something like the code below.

Do you see how the indentation already cleans up your post? Now you only need to write comments explaining why you're using this code.

name = [ "Pedestal_AC"
    "Pc_Ecart"
    "ratioE2FWHM"
    "ratioDT_AC"
    "lim75E_AC"
    "RatioI"];

if numel(unique(name))~=numel(name) % check for duplicates
    error('this will result in overwritten files')
end

kk=1;
for zz=1:numel(name)
    folder = convertStringsToChars(name(zz));
    if ~isdir(folder)
        mkdir(folder);
    end
    filename = fullfile(folder,strcat(num2str(kk),'.png'));
    
    f = figure(zz);
    if zz==numel(name) % since these all get overwritten, we only need to do the last
        frame = getframe(f);
        im = frame2im(frame);
        [imind,cm] = rgb2ind(im,256);
    end
    saveas(f,filename)
end

this call to saveas will write the file Pedestal_AC/1.png
this call to saveas will write the file Pc_Ecart/1.png
this call to saveas will write the file ratioE2FWHM/1.png

this call to saveas will write the file ratioDT_AC/1.png

this call to saveas will write the file lim75E_AC/1.png

this call to saveas will write the file RatioI/1.png

function saveas(f,fn)
% Overload saveas to show what would happen
if exist(fileparts(fn),'dir')
    fprintf('this call to saveas will write the file %s\n',fn);
else
    fprintf('an error will occur')
end

% close the figure to avoid cluttering the post with empty images
close(f);
end