insert text in for loop operation

I intend to insert text to each image saved during for loop operation.

I have for loop runs from i = 1:1:200 ;

lets say for image saved duirng i = 1 iteration I need to insert ' t = 0 s' and t = 0.0002 s, t = 0.0004 s, t = 0.0006 s for images saved duirng i = 2, 3, 4 iterations respectively. Please help me with this ...

for i = 1:1:200
    %% image processing
    %% insert text
    %% save image
end

Answer 1

[Turbulence Analysis]

Jan,

Thanks for your answer.

Actually, I am saving images in .bmp format as shown below.. Essentially for each iteration it saves image as S00001.bmp, S00002.bmp and so on...

   for i = 1:1:100
       %% save image to the folder 
fname  = fullfile(inputFolder, fname); 
    thisBaseFileName = sprintf('S%4.5d.bmp', i); 
    fullFileName = fullfile(outputFolder, thisBaseFileName); 
    saveas(gcf, fullFileName)
  clf
   end

And text should appear somewhere in the image like (x,y) = (10, -35) as shown in attached figure ..

text (10, -35, 'my text')

[Turbulence Analysis]

Hi,

I tried as follows . I works well. But It prints on image as t = 2.000000e-4 s, But I just need to show t = 2e-4 s.. How to do that ??

text(10,-35,['t= ',sprintf('%ds',((i-1)*0.0002))],'FontSize',18,'Interpreter','latex');

[Jan]

Replace "['t= ',sprintf('%ds',((i-1)*0.0002))]" by

sprintf('t = %gs', (i-1) * 0.0002)

[Turbulence Analysis]

Hi,

Thanks for the correction..

I have used as follows, Now I am getting the intended one ...

t = 0.0002 * (i);
text(5,-35,[sprintf('t = %g s', t)],'FontSize',18,'Color','b','Interpreter','latex');

Answer 2

[Jan]

The question is not clear yet. Where should ' t = 0 s' appear? As title of an axes?

for i = 1:200
    %% image processing
    %% insert text
    %% save image
    t = 0.0002 * i;
    FigH = figure;
    axes;
    title(sprintf('t = %g s', t));
    % Now "save" the image
    
end

What does "save"! means here? Print as PDF, a screenshot, a fig file? Maybe:

savefig(FigH, sprintf('Figure%04d.fig', i), 'compact')