Re: gsnXRefLine

From: Erika Folova <e.folova_at_nyahnyahspammersnyahnyah>
Date: Sat Feb 22 2014 - 15:17:42 MST

Hi Will,

I have no Idea why I got this error: *warning:gsFillColor is not a valid
resource*,
my plot resources are:

  res = True
  res@gsnDraw = False
  res@gsnFrame = False
  res@xyLineThicknesses = 2.0
  res@xyLineColors = "blue"
  ;res@xyMonoDashPattern = False
  res@gsnXYBarChart = True
  res@gsnXYBarChartOutlineOnly = True ;(even if i set this "False" still
produced the same error)

  res@tmXBMode = "Explicit"
  res@tmXBValues = (/-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7/)
  res@tmXBLabels = (/-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7/)
  res@tmXMajorGrid = True
  res@tmXMajorGridThicknessF = 1.0 ; 2.0 is default
  res@tmXMajorGridLineDashPattern = 2 ; select short dash lines
  res@tmYMajorGrid = True ; implement y grid
  res@tmYMajorGridThicknessF = 1.0 ; 2.0 is default
  res@tmYMajorGridLineDashPattern = 2 ; select short dash lines

* res@gsnXRefLine = 0.0 *
* res@gsnXRefLineThicknessF = 3.0*
* cols = where(yy.lt.0, "blue", "red") *
  res@gsFillColor = cols

  plotD = gsn_csm_xy (wks, xx, yy, res)

Thank you Will,
Erika

On Sun, Feb 23, 2014 at 7:02 AM, Will Hobbs <Will.Hobbs@utas.edu.au> wrote:

> Erika
>
> Have you looked at the histogram examples on the NCL help files? There
> aren't any examples that do exactly what you want, but there should be
> enough there to pint you in the right direction
>
> http://www.ncl.ucar.edu/Applications/histo.shtml
>
> I can think of two ways of doing what you what. The first would be to
> plot values below zero and above zero separately with different colors (use
> the gsFillColor resource), and then overlay.
>
> The second, probably easier way, would be to set up an array of fill
> colors the same size as the 'x' array.
>
> > cols = where(xx.lt.0, "blue", "red") ; new array of size Nbin,
> where Nbin is the number of bins. Blue where xx is less than 0, red
> otherwise
> > res@gsFillColor = cols
>
> > plotD = gsn_csm_xy (wks, xx, yy, res)
>
> Good luck
>
> Will
>
>
> From: Erika Folova <e.folova@gmail.com>
> Date: Saturday, 22 February 2014 9:09 PM
> To: NCL-talk <ncl-talk@ucar.edu>
> Subject: gsnXRefLine
>
> NCL,
>
> I am wondering whethere there is a function that works similar like
> res@gsnAboveYRefLineColor or res@gsnBelowYRefLineColor but for
> gsnXRefLine?
> I would like to shade my histogram with gray for the value lower than zero:
>
> e.g.
>
> [SNIP]
>
> res = True
> res@gsnDraw = False
> res@gsnFrame = False
> res@xyLineThicknesses = 2.0
> res@xyLineColors = "blue"
> res@xyMonoDashPattern = False ; all solid
> res@tiYAxisString = "PDF (%) "
> res@tiXAxisString = "PC "
> res@gsnXYBarChart = True ; Create bar plot
> ;res@gsnXYBarChartOutlineOnly = True
>
> res@trXMinF = -5.0 ; min value on y-axis
> res@trXMaxF = 7.0
> res@trYMinF = 0.0 ; min value on y-axis
> res@trYMaxF = 10.0
> res@vpHeightF= 0.3 ; change aspect ratio of plot
> res@vpWidthF = 0.90
>
>
> res@tmXBMode = "Explicit"
> res@tmXBValues = (/-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7/)
> res@tmXBLabels = (/-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7/)
> res@tmXMajorGrid = True
> res@tmXMajorGridThicknessF = 1.0 ; 2.0 is default
> res@tmXMajorGridLineDashPattern = 2 ; select short dash
> lines
> res@tmYMajorGrid = True ; implement y grid
> res@tmYMajorGridThicknessF = 1.0 ; 2.0 is default
> res@tmYMajorGridLineDashPattern = 2 ; select short dash
> lines
>
> res@vpXF = 0.07 ; position and size
> res@vpYF = 0.45
>
>
> res@tiMainFontHeightF = 0.018
> res@tmXBLabelFontHeightF = 0.014
> res@tmYLLabelFontHeightF = 0.014
>
> * res@gsnXRefLine = 0.0 *
> * res@gsnXRefLineThicknessF = 3.0*
> * res@gsnRightXRefLineColor = "red" ; above ref line fill red*
> * res@gsnLeftXRefLineColor = "blue"*
>
> plotD = gsn_csm_xy (wks, xx, yy, res)
>
> ---
>
> Thanks
>
> Erika
>
>
> _______________________________________________
> ncl-talk mailing list
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
>

_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk
Received on Sat Feb 22 15:17:53 2014

This archive was generated by hypermail 2.1.8 : Mon Mar 03 2014 - 14:26:18 MST