how to save a plot with black background/border, white labels and white title to an image file

The following code produces what I want, a plot with a black background, black border, white labels, ticks, and title (see file screen.PNG).

figure(1)

plot([0,1],[0,1])

xlabel('x-label')

ylabel('y-label')

title('title','Color','w')

set(gcf,'Color',[0 0 0]); % color of the frame around the figure

set(gca,'Color','k')%color for the plot area

set(gca,'XColor',[1 1 1]); % Set RGB value to what you want

set(gca,'YColor',[1 1 1]); % Set RGB value to what you want

saveas(gcf,'myfigure.png'); % save as .png file

Nonetheless, the file saved by saveas has a white border without ticks, labels, or title (see saved.png). I obtain the same result if I save it through the File menu. If I print it to a pdf file, my result has white background, white border, black labels, black ticks, and black title (see printed pdf).

How could I save an image file that looks like figure(1)? Your help and advice will be kindly appreciated.

Answer 1

[Kevin Holly]

You could use getframe to capture the axes as an image.

[Joaquin Salas]

Thanks for your fast response, Kevin.

I added the following two instructions to my code:

F = getframe;

im = frame2im(F);

Then, I tried saving my image with imwrite. The resulting image in the files does not have labels, ticks, and title (see from_getframe.png). Then, I tried displaying the image using imagesc, but the ticks changed, the labels disappeared, and the title disappeared (imagesc_saved.png).

[Kevin Holly]

try

F=getframe(gcf)

F = struct with fields:
       cdata: [433×577×3 uint8]
    colormap: []

to get an image of the entire figure window.

figure(1) 
plot([0,1],[0,1])
xlabel('x-label')
ylabel('y-label')
title('title','Color','w')
set(gcf,'Color',[0 0 0]); % color of the frame around the figure
set(gca,'Color','k')%color for the plot area
set(gca,'XColor',[1 1 1]); % Set RGB value to what you want
set(gca,'YColor',[1 1 1]); % Set RGB value to what you want
F=getframe(gcf);

imshow(F.cdata)

[Joaquin Salas]

That worked pretty well! Thanks! I deeply appreciate your support, right to the point and timely. Thanks much.

Here is the code.

%%%%%%%%%%%%

figure(1)

plot([0,1],[0,1])

xlabel('x-label')

ylabel('y-label')

title('title','Color','w')

set(gcf,'Color',[0 0 0]); % color of the frame around the figure

set(gca,'Color','k')%color for the plot area

set(gca,'XColor',[1 1 1]); % Set RGB value to what you want

set(gca,'YColor',[1 1 1]); % Set RGB value to what you want

F = getframe(gcf);

im = frame2im(F);

imwrite(im,'im_from_getframe.png');