how do i check if line in plot exists and if yes delete it otherwise nothing

Asked by Jakub on 6 Nov 2012

Latest activity Answered by Sonima on 24 Jan 2019

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I have GUI with some plots. and in the plot there migt be lines in it. and when i pres certain button i want to check if there are some lines in plot and if so delete them. if there arent any do nothing... Thanks for help!

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Answer by Arthur on 6 Nov 2012

Accepted Answer

Dirty way:

cla(axes_handle)

If you know the handle of the line:

if ishandle(line_handle)
delete(line_handle)
end

if you don't know the line handle, use get(axeshandle,'Children') to find it.

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Answer by Sonima on 24 Jan 2019

Hi!

I want to do the same, delete a line if exist in a plot in a fuction.

I used the suggeste code

if ishandle(line_handle)
delete(line_handle)
end

But I got the error:

Undefined function or variable 'line_handle'.

How can I fix it?!

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