I run a GUI where i enter values through edit boxes in order to take a plot, for example a simple line between A and B (i enter their coordinates through the boxes)
The function that plot the line is called from a push button.
I enter the A,B coordinates, press the button and get the plot with the line.
If, while still running the GUI, i enter a different value for A or B and press the button i get two lines in the plot.
What can i do so that when i press the button for a second time the first plot gets erased and the second plot is displayed alone?
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