comp.lang.idl-pvwave archive: archive » Re: Adding straight lines to a plot

Home » Public Forums » archive » Re: Adding straight lines to a plot

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Adding straight lines to a plot [message #73472 is a reply to message #73471]

Thu, 11 November 2010 15:02

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

fgg writes:

>
> Is there a function in IDL to add a straight line through an existing
> plot? Something like the 'abline' function in R, where all you need is
> to specify the y-value for a horizontal line (or the x-value for a
> vertical line).

Here you go.

PRO ABLine, value, $
VERTICAL=vertical, $
LINESTYLE=linestyle, $
THICK=thick, $
COLOR=color

IF N_Elements(color) EQ 0 THEN color = 'white'

IF Keyword_Set(Vertical) THEN BEGIN
PLOTS, [value, value], [!Y.CRange[0], !Y.CRange[1]], $
LINESTYLE=linestyle, THICK=thick, $
COLOR=FSC_Color(String(color))
ENDIF ELSE BEGIN
PLOTS, [!X.CRange[0], !X.CRange[1]], [value, value], $
LINESTYLE=linestyle, THICK=thick, $
COLOR=FSC_Color(color)
ENDELSE

END

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

Report message to a moderator

[Message index]

		Re: Adding straight lines to a plot By: fgg on Thu, 11 November 2010 15:22
		Re: Adding straight lines to a plot By: David Fanning on Thu, 11 November 2010 15:02
		Re: Adding straight lines to a plot By: penteado on Thu, 11 November 2010 14:38
		Re: Adding straight lines to a plot By: Paul Van Delst[1] on Fri, 12 November 2010 06:32

Previous Topic:	IDL_IDLBridge limited to 4?
Next Topic:	Adding straight lines to a plot

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Tue Dec 02 22:04:52 PST 2025

Total time taken to generate the page: 1.12414 seconds