Export figure using print with variable as the file name

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Miraboreasu
Miraboreasu 2023-1-6
评论： Miraboreasu 2023-1-8
Ran in:
x1=1:1:1000;
check = rand(1000,35);
cmap = hsv(5);
for K = 1 : 5
thiscolor = cmap(K,:);
figure
for J = K:5:35
plot(x1,check(:,J), '-o','color', thiscolor);
grid on
grid minor
hold on
end
set(gca,'fontweight','bold','FontSize',25)
print(gcf,'E%d.png',K,'-dpng','-r600'); %Here is the problem
end
How to export the figure with K as the variable

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采纳的回答

Adam Danz
Adam Danz 2023-1-6
编辑：Adam Danz 2023-1-7
Use exportgraphics (or another function export function, if needed) and define the filename using sprintf.
Example:
fig = figure();
% do your plotting here
filename = sprintf('E%d.png', k);
exportgraphics(fig,filename,'Resolution',600)
Alternatively,
filename = string(k);

更多回答（1 个）

Adam
Adam 2023-1-6
The problem with this code is that the print function is not being used correctly. The first argument to print should be the file name to save the plot to, but in this case it is the handle to the figure object that is being plotted. The file name should be specified as the second argument, using the '-f' option.
To fix the problem, you can change the line
print(gcf,'E%d.png',K,'-dpng','-r600');
TO
print('-f','E%d.png',K,'-dpng','-r600');

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