How to save a figure through each run of a for loop?

Hello,

I am running a for loop:

for i=1:5

and in each loop, I am creating and saving a plot:

h=figure
plot(...)

saveas(h,'FIG','png');
end

This is problematic because 'FIG.png' is overwritten each time the for loop runs. How do I make it so that it saves 'FIG1.png','FIG2.png','FIG3.png', etc? In other words, how do I save FIG(i).png?

Thank you for your time.

Answer 1

[Azzi Abdelmalek]

for k=1:5
 h=figure
 plot(...)
 saveas(h,sprintf('FIG%d.png',k)); % will create FIG1, FIG2,...
end

[Cheerful]

Thanks Azzi. Happy world cup day

[Sai M]

How can i hold on to each graph and get series of images

[Azzi Abdelmalek]

Just add

hold on

[Sai M]

Sorted the issue :)

[Kristian]

Hi, could I ask if there is a way to implement this using the print function? The saveas function doesn't allow me to change the resolution, so that is why I would want to use the print function. Or maybe there are other functions more suitable? Thank you!

Answer 2

[serena dsouza]

Hi, I am having same type of code but i want to save figures from two for loop.how can I do this.I have tried by following command but it is giving error.Thank you

for i=1:3
.
.
for k=1:5
 h=figure
 plot(...)
 saveas(h,sprintf('FIG%d%d.png',ik)); 
end
end

Answer 3

[Image Analyst]

If you have r2020a or later, try exportgraphics().

[serena dsouza]

I don't have it. I am working on r2016a. Is there any other solution??

[Sudheer Bhimireddy]

You can try this,

for i=1:3
.
.
for k=1:5
 h=figure;
 plot(..);
 fig_name = strcat('FIG_',num2str(i),'_',num2str(k));
 print(h,fig_name,'-dpng','-r400'); 
end
end

This way you can print to your desired format and resolution.

Answer 4

[Image Analyst]

Try export_fig: http://blogs.mathworks.com/pick/2010/05/28/creating-and-exporting-publication-quality-graphics/