matplotlib-users

[Matplotlib-users] Deleting lines from a plot

[Carl M. <car...@bi...>]

Is it possible to delete a line from a plot without clearing the entire
axis, or effecting
any other lines that may be their? In Matlab, it is possible to delete(h)
where h is
the handle to a line. However, I can't seem to find an equivelent command in
Matplotlib (either in the Pylab or OO interface).

Thanks,
Carl

Re: [Matplotlib-users] Deleting lines from a plot

[Wendell C. <wcr...@uf...>]

Hi,

One way of doing this is to plot the same line again with the color set to
the background color. 

Wendell Cropper


At 05:56 PM 5/5/2005 +1000, you wrote:
>Is it possible to delete a line from a plot without clearing the entire
>axis, or effecting
>any other lines that may be their? In Matlab, it is possible to delete(h)
>where h is
>the handle to a line. However, I can't seem to find an equivelent command in
>Matplotlib (either in the Pylab or OO interface).
>
>Thanks,
>Carl
>
>
>
>
>-------------------------------------------------------
>This SF.Net email is sponsored by: NEC IT Guy Games.
>Get your fingers limbered up and give it your best shot. 4 great events, 4
>opportunities to win big! Highest score wins.NEC IT Guy Games. Play to
>win an NEC 61 plasma display. Visit http://www.necitguy.com/?r=20
>_______________________________________________
>Matplotlib-users mailing list
>Mat...@li...
>https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>


University of Florida
School of Forest Resources and Conservation
214 Newins-Ziegler
PO Box 110410
Gainesville, FL 32611-0410

352-846-0859  phone
352-392-1707  fax

wcr...@uf...

Re: [Matplotlib-users] Deleting lines from a plot

[John H. <jdh...@ac...>]

If you know which line you want to delete, you can call
ax.lines.remove(line) where line is a line instance.

    In [1]: line1, = plot(rand(10), 'ro')
    In [2]: line2, = plot(rand(20), 'b--s')
    In [3]: ax = gca()
    In [4]: ax.lines.remove(line1)
    In [5]: draw()

If you haven't saved the line instance, but can otherwise identify it
(eg you know it was the first line you plotted), you can do something
like

  ax.lines.remove(ax.lines[0])

or if you have labeled the line, you can identify and remove it with

  plot(x,y,label='my line')
  line = [line for line in ax.lines if line.get_label()=='my line'][0]
  ax.lines.remove(line)

JDH

Re: [Matplotlib-users] Deleting lines from a plot

[Carl M. <car...@bi...>]

So obvious when someone tells you! Thanks for this, it is exactly what I was
looking for. 

Carl

----- Original Message ----- 
From: "John Hunter" <jdh...@ac...>
To: "Carl Mouser" <car...@bi...>
Cc: <mat...@li...>
Sent: Thursday, May 05, 2005 11:55 PM
Subject: Re: [Matplotlib-users] Deleting lines from a plot


> 
> If you know which line you want to delete, you can call
> ax.lines.remove(line) where line is a line instance.
> 
>     In [1]: line1, = plot(rand(10), 'ro')
>     In [2]: line2, = plot(rand(20), 'b--s')
>     In [3]: ax = gca()
>     In [4]: ax.lines.remove(line1)
>     In [5]: draw()
> 
> If you haven't saved the line instance, but can otherwise identify it
> (eg you know it was the first line you plotted), you can do something
> like
> 
>   ax.lines.remove(ax.lines[0])
> 
> or if you have labeled the line, you can identify and remove it with
> 
>   plot(x,y,label='my line')
>   line = [line for line in ax.lines if line.get_label()=='my line'][0]
>   ax.lines.remove(line)
> 
> JDH