polyline help

Hi-
I am having some serious trouble drawing a polyline using gsn_add_polyline. The map appears but not the line. There is no error, just a map with no line.

; show map with the cross section line
resa = True
  WRF_map_c(a, resa, 0) ; reads info from file
  resa_at_tfDoNDCOverlay = True
  resa_at_gsnMaximize = True ; maximize size
  resa_at_gsnSpreadColors = True ; use full range of colormap
  resa_at_gsnScalarContour = True ; contours desired

  resa_at_cnFillMode = "RasterFill" ; raster
  resa_at_cnLevelSelectionMode = "ExplicitLevels" ; explicit [unequal] cn levels

  resa_at_vcGlyphStyle = "WindBarb"
  resa_at_vcRefLengthF = 0.025 ; ref vec length
  resa_at_vcMinDistanceF = 0.02 ; larger means sparser
  resa_at_vcWindBarbTickLengthF = 0.3 ; default 0.3
  resa_at_vcRefAnnoOn = False
  qlevs = (/0,1,2,3/)
  resa_at_mpGeophysicalLineThicknessF = 2.0
  resa_at_mpUSStateLineThicknessF = 2.0

  resa_at_gsnLeftString = "Wind Vectors (m/s), Temp, Hght"
  resa_at_gsnRightString = "MYJ"
   resa_at_gsnDraw = False
   resa_at_gsnFrame = False
print("plotting")
    plota = gsn_csm_map(wks,resa)
        resp = True
        resp_at_gsLineColor = "Black"
        resp_at_gsLineThicknessF = 2.0
        resp_at_gsLineLabelString = "A"

xp = (/plane(0),plane(2)/)
yp = (/plane(1),plane(3)/)
print("dum")
       dum = gsn_add_polyline(wks,plota,xp,yp,resp)
print("frame")
 draw(plota)
 frame(wks)

James Correia Jr
Post Doc
PH: 372-6463
james.correia_at_pnl.gov

"Wisdom. Strength. Courage. Generosity. Each of us are born with one of these. We must find the other three inside of us."
-from "Into the West"

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Received on Wed May 13 2009 - 02:45:32 MDT