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

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!

Answer 1

[Arthur]

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.

Answer 2

[Sonima]

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?!