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Removing one of two plots on a single axis

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Eli Roos
Eli Roos 2020-12-11
回答： Paul Hoffrichter 2020-12-11
Hey there,
I have created a figure with an interactive text box and a callback function that plots based on the user input.
I have an axis and i plotted a line on it once, but then later in my code i plot a red dot based on what the user inputs, but I need to be able to remove that red dot once the user inputs another number and create a red dot for that new number.
I can share my code but it's awfully long, I was also advised using findobj might work, or something with axes handle could work.

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Paul Hoffrichter
Paul Hoffrichter 2020-12-11
t =0:.01:1;
y = sin(2*pi*4*t); hold on;
h1 =plot(.2,.5,'ro');
pause
delete(h1)
Hit a spacebar and the red circle will disappear leaving the rest of the plot intact.

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