Insert text to the image in for loop

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Turbulence Analysis
Turbulence Analysis el 14 de Mayo de 2021
Comentada: Turbulence Analysis el 15 de Mayo de 2021
Hi,
I am trying to insert text to the series of images being generated for each iteration in for loop. For instance, lets say for f = 1:1:200, at f = 1 ieration i need to insert text of t = 0 s likewise t = 0.0002 s, t = 0.0004 s, t = 0.0006s for f = 2, 3, 4 ans so on respectively..
Please help me with this..
  2 comentarios
KSSV
KSSV el 14 de Mayo de 2021
Read about text.
Turbulence Analysis
Turbulence Analysis el 14 de Mayo de 2021
I did tried as follows, but text getting overlapped on each image !!
for g = 0:0.00002:0.04
text(25,-35,['t= ',sprintf('%d',g)])
end

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Respuesta aceptada

Rik
Rik el 14 de Mayo de 2021
Editada: Rik el 14 de Mayo de 2021
Instead of recreating graphics object every iteration of your loop, it is often faster to create the object once and then update the properties:
text_handle=text(25,-35,'');
for g = 0:0.00002:0.04
text_handle.String=sprintf('t= %.5f',g);
drawnow % force graphics update
end
  3 comentarios
Rik
Rik el 14 de Mayo de 2021
Editada: Rik el 14 de Mayo de 2021
Ah, yes, sorry. I had at first set it print a 0 that way when initializing the object. I'll edit my answer. (you'll also have to change the FormatSpec to print the actual values, instead of telling Matlab to treat your values as integers)
Did this solve your question? If so, please consider marking it as accepted answer. If not, feel free to post a comment with your remaining issues.
Turbulence Analysis
Turbulence Analysis el 15 de Mayo de 2021
Yes.. I have sorted the issue..
I am using as follows, now its better
t = 0.0002 * (i);
text(5,-35,[sprintf('t = %g s', t)],'FontSize',18,'Color','b','Interpreter','latex');

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