How to give print of a certain axis in the guide?

I'm trying to get print out of a particular axis where the video is but I can not. I can only print from the whole window, but not from a specific axis. The function I used was:

set (gcf, 'PaperPositionMode', 'auto');

print ('PeaksSurface', '-dpng', '-r0');

Result:

Only prints the entire screen. I need to print only the video.

Answer 1

[Walter Roberson]

https://www.mathworks.com/matlabcentral/fileexchange/23629-export-fig

[Walter Roberson]

I see that you had Accepted this answer but then revoked that indicating that the answer did not work for you.

There are two methods for printing an individual axis:

1. getframe() the axis, imwrite() the resulting array, and tell your system printer function to print the resulting image (your printer driver will run the image through some internal conversion routine to get something it can print); or
2. copy the figure items that are associated with the axis into a new figure that has nothing else, and then use the routines that can print an entire figure. This is the basic tactic used by export_fig, which has had a lot of work put into it to take care of all of the details.

[Raphael Ferreira]

I faced another problem.

My code is written in Portuguese, so I'm going to try to explain it.

- The panel on the left (showing the arduino board) has an axis with the tag "eixoVideo". To be clearer: eixoVideo is the tag of the AXIS, not the panel's.

- The empty panel on the right has an axis with the tag "eixoTracado". Again: eixoTracado is the tag of the AXIS, not the panel's.

So now, here is what I am doing:

h = guihandles; % shows the available handles of the GUI
F = getframe(h.eixoVideo); % gets a snapshot of the image in the video axis
Image = frame2im(F); % transforms the frame into an image
imwrite(Image, 'Image.png') % saves the image

In order to understand how the code works, I commented the above code, ran the GUI, and tried to run these 4 lines of code in the command window separatedly (line by line). After I ran the first line, the handle "eixoVideo" wasn't there, but the handle "eixoTracado" was.

So I tried to switch axes: I put the video in "eixoTracado", and left the "eixoVideo" empty. As I expected, when I ran "h = guihandles;" , the handle "eixoVideo" appeared, but "eixoTracado" was gone.

Does that mean I can't use the axis handle (eixoVideo) when I'm using it to transmit video? If it doesn't, how do I solve this problem?

Thanks in advance!!!

[Walter Roberson]

I suspect you might be using imshow() . imshow() tends to delete axes when it is called the second time. If you are using imshow(), change to using image() instead.

[Raphael Ferreira]

I'm already using image()

[Walter Roberson]

I will probably need to see your code and any associated .fig file.

[Raphael Ferreira]

Okay!

[Raphael Ferreira]

I got it, I used the function "getframe" and turned it into an image and saved it in the "imwrite" function.

Thank you.

result: