Problem by saveas plot

Hi everyone, I do not understand what I'am doing woring in saving my plot.
My code:
Temp=[num2str(vaiable), 'Myplotnumber' ,num2str(n) ,'-dpng'];
saveas(gcf,Temp);
it save the figure always with Var1Myplotnumber2.png.fig
why put matlab .fig at the end?
Thank you?

3 个评论

If I use print(gca, Temp)
I got:
Error using alternatePrintPath
Invalid or unsupported printer '' specified.
Error in print (line 83)
pj = alternatePrintPath(pj);
Pass gcf and not axes
print(gcf, 'test', '-dpng', '-r400')

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 采纳的回答

CSCh
CSCh 2021-1-4

0 个投票

Thank you all so much for your help. In my case the '-dpng' ending did not work.
if I change to:
Temp=['%MyName%' ,'.png'];
saveas(gcf, Temp)
it saves png format.
BR

更多回答(3 个)

Image Analyst
Image Analyst 2020-12-20

0 个投票

Use exportgraphics() instead if you have R2020a or later.

7 个评论

If I use
exportgraphics(f,Temp)
i got this error
Error using exportgraphics
When exporting to file specify both a file name and extension.
Hoewever Temp = "Var1Myplotnumber2.png" is working in the command line.
If I use:
hgexport it works without error, but I got:
Var1Myplotnumber2.png.eps
With f= figure(1)
How about if you do this:
g = gcf; % Or gca, whatever you want.
exportgraphics(g, Temp);
Got the same error message
Try this code in a simple script or in the command window.
plot(1:11, 'b-', 'LineWidth', 2);
fullFileName = fullfile(pwd, 'Delete me.png');
exportgraphics(gcf, fullFileName);
Does it create the file? For me it does.
Yes that works for me, but why does not my code work? Maybe something with my loop (num2str (n)), I have to check..
I don't know. You never showed me your exportgraphics() code that didn't work. You only showed it where it worked in the command window with a hard-coded filename string. Please post the non-working code from your m-file. Apparently it thinks your Temp did not have an extension on it. Are you sure Temp ends in '.png'?

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Temp = {sprintf('%dMyplotnumber%d.png', vaiable, n),'-dpng'};
saveas(gcf, Temp{:})
You can do
baseFileName = sprintf('%d Myplotnumber %d.png', variable, n); % Name without folder.
fullFileName = fullfile(yourFolder, baseFileName); % Prepend folder.
saveas(gcf, fullFileName);

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