How to publish text and pictures in a loop

Question

per isakson 2012-7-7

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评论： jfaulhab 2018-12-13

I want to make a simple catalog over screen clips, which I captured with the Windows 7 Snipping Tool. That's simple with a for-loop, I thought. That would output text, picture, text, picture, etc. However, the script below produces a block of text followed by the pictures. (R2012a).

Next, I included the text in the figure with the function, title. However, I have set a max width as an publish option. In many cases that made the text unreadable small.

Using the errordlg to show the text is not attractive.

Have I missed an option in publish?

Is there a simple work around?

%%Snipping Tool clips
file_spec   = fullfile( folder_spec, '*.png' );
sad         = transpose( dir( file_spec ) );
for sa = sad
    fprintf( '%s | %8u | %s\n', datestr(sa.datenum,31), sa.bytes, sa.name )
    ... create a figure with an axes 
    pic = imread( fullfile( folder_spec, sa.name ), 'png' );
    imagesc( pic )
end

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Walter Roberson 2012-7-7

No drawnow() ?

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Answer 1

Sean de Wolski 2013-7-29

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https://ww2.mathworks.cn/matlabcentral/answers/42989-how-to-publish-text-and-pictures-in-a-loop#answer_93054

在 MATLAB Online 中打开

is a code secton break. You can find more information on it here:

http://www.mathworks.com/help/releases/R2013a/matlab/matlab_prog/run-sections-of-programs.html#brqxeeu-285

You may also be interested in snapnow() to force publish to take a snapshot.

doc snapnow

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jfaulhab 2018-12-13

Is there also a way to publish picture, text, picture, text... inside a loop? Normally with snapnow, the figure is placed at the bottom of the section. Any idea how to accomplish this?

Many thanks in advance!

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Answer 2

per isakson 2012-7-8

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/42989-how-to-publish-text-and-pictures-in-a-loop#answer_52898

编辑：per isakson 2013-8-8

在 MATLAB Online 中打开

I've found the answer, which raises a new question. How come I missed the importance the position of "%%" relative to the loop?

A "%%" need to be inside the loop to "flush the output buffer". The code below does it.

%%Snipping Tool clips
file_spec   = fullfile( folder_spec, '*.png' );
sad         = transpose( dir( file_spec ) );
for sa = sad
    fprintf( '%s | %8u | %s\n', datestr(sa.datenum,31), sa.bytes, sa.name )
    ... create a figure with an axes 
    pic = imread( fullfile( folder_spec, sa.name ), 'png' );
    imagesc( pic )
end

.

Cont.

The code below illustrates the role of cell break, %%, inside the loop. Only Test 1 produces the result

text,picture, text,picture, text,picture

rgb = imread('ngc6543a.jpg');
%
%%Test 1
for ii = 1 : 3
    fprintf( 'Picture: %u', ii )
    image(rgb);
end
%%Test 2
for ii = 1 : 3  
    fprintf( 'Picture: %u\n', ii )
    image(rgb);
end
%%Test 3
for ii = 1 : 3  
    fprintf( 'Picture: %u\n', ii )
    figure, image(rgb);
end
%%Test 4
for ii = 1 : 3  
    fprintf( 'Picture: %u\n', ii )
    figure, image(rgb);
    drawnow()
end

.

2013-08-08: With R2013a and snapnow, this example produces the desired result

text,picture, text,picture, text,picture

%%Test with snapnow
for ii = 1 : 3  
    fprintf( 'Picture: %u\n', ii )
    figure, image(rgb);
    snapnow()
end

Since when has snapnow been around? Sean, thanks for making me aware of it.

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francesco 2013-7-22

Yes, I think this is the only to overcome the problem. Thank you very much for your help ! Best regards

Peter 2013-7-29

And something else to watch out for: Following this answer I discovered (2012b) that a try catch block around the section ment to flush the figures is a problem. For me, I had to remove the try catch, otherwise the %% had no effect in within the loop.

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