gsnYRefLine and gsn_csm_xy2

From: Saji N. Hameed (saji AT hawaii.edu)
Date: Mon Sep 19 2005 - 16:34:56 MDT


Hello,

A colleague of mine encountered an unexpected behavior when he used the
attribute gsnYRefline along with gsn_csm_xy2 -- one of the two line plots
was shifted by an arbitrary distance.

To illustrate the problem, consider the following code:

;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

         time=ispan(1,20,1)
         x=cos(time)
         y=20*cos(time)

           wks = gsn_open_wks("x11","xy")
           resL = True
           resR = True
           resR@xyDashPatterns = 1

         plot = gsn_csm_xy2(wks,time,x,y,resL,resR)

; If you add the attribute gsnYRefLine, the behavior is unexpected.

           resL@gsnYRefLine = 0.0
         plot = gsn_csm_xy2(wks,time,x,y,resL,resR)
;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Is this a feature or a bug?

  NCAR Command Language Version 4.2.0.a032
  Operating System (Linux, also encountered the bug on NCL running
                           on Mac OS:Tiger)

saji
.....

Saji N. Hameed
Assistant Researcher
International Pacific Research Center,
2525 Correa Road, Honolulu, HI 96822

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