How can I put a display that shows changing variables in a plot?

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Carlos Alan Parra Amaya
编辑： Adam Danz 2019-12-10
I wanted to know if I could put a display that shows me a number that changes in a plot.

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回答（2 个）

Aquatris
Aquatris 2019-12-5
Assuming you plot in a for loop and the changing variable is x, below code will update the title of the plot to be equal to x
for i = 1:length(x)
plot(t,x(i))
title(x(i))
pause(0.001)
end
Adam Danz
Adam Danz 2019-12-5
编辑：Adam Danz 2019-12-10
Use h=text(. . .) to create the text object and then update the handle as needed.
Here's a demo
clf()
axh = axes();
h = text(.5, .5, ''); % initialize as empty
for i = 1:15
h.String = i;
pause(.5)
end
You may want to format your numeric input using
sprintf(. . .)
h.String = sprintf(. . .);

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