[ncl-talk] Strange white lines across plot

[Michael Notaro]

I am using NCL 6.1.2. Please see the attached plot

and note the odd white lines across the figure. Any

idea what caused it and how to remove it?




The plotting lines are listed below.




If I change the data values in the plot to some

arbitrary value, sometimes the lines go away.




Michael







wks=gsn_open_wks("ps","bar_revised2")
 
gsn_define_colormap(wks, "NCV_blue_red")
 


 
res = True
 
res at gsnDraw = False
 
res at gsnFrame = False
 
res at cnRasterModeOn=True
 
res at cnFillDrawOrder = "PreDraw"
 
res at tmXTOn = False
 
res at tmXTBorderOn = False
 
res at tmYROn = False
 
res at tmYRBorderOn = False
 
res at tmXBOn = False
 
res at tmXBBorderOn = False
 
res at tmYLOn = False
 
res at tmYLBorderOn = False
 
res at lbLabelFont = 25
 
res at lbLabelFontHeightF = 0.012
 
res at lbBottomMarginF = 0.5
 
res at lbTopMarginF = 0.25
 
res at cnFillOn = True
 
res at cnLinesOn = False
 
res at cnLevelSelectionMode = "ManualLevels"
 


 
lower=int2flt(floattointeger(min(VAR3)*100.))/100.
 
upper=int2flt(floattointeger(max(VAR3)*100.))/100.
 
delta=fabs(lower-upper)
 


 
res at cnLevelSpacingF=0.01
 


 
if ( (delta.ge.0.).and.(delta.lt.0.0025) ) then
 
 res at cnLevelSpacingF=0.00001
 
end if
 
if ( (delta.ge.0.0025).and.(delta.lt.0.025) ) then
 
 res at cnLevelSpacingF=0.0001
 
end if
 
if ( (delta.ge.0.025).and.(delta.lt.0.25) ) then
 
 res at cnLevelSpacingF=0.001
 
end if
 
if ( (delta.ge.0.25).and.(delta.lt.2.5) ) then
 
 res at cnLevelSpacingF=0.01
 
end if
 
if ( (delta.ge.2.5).and.(delta.lt.25.0) ) then
 
 res at cnLevelSpacingF=0.1
 
end if
 
if ( (delta.ge.25.).and.(delta.lt.250) ) then
 
 res at cnLevelSpacingF=1.0
 
end if
 
if ( (delta.ge.250.).and.(delta.lt.2500.) ) then
 
 res at cnLevelSpacingF=10.0
 
end if
 


 
res at gsnSpreadColors=True




if ( (lower.ge.0.).and.(upper.ge.0.) ) then

 res at gsnSpreadColorStart=120

 res at gsnSpreadColorEnd=2

end if

if ( (lower.le.0.).and.(upper.le.0.) ) then

 res at gsnSpreadColorStart=255

 res at gsnSpreadColorEnd=137

end if




if ( (lower.lt.0.).and.(upper.gt.0.) ) then

 ratio=fabs(lower)/fabs(upper)

 res at gsnSpreadColorStart=255

 res at gsnSpreadColorEnd=128-floattointeger(128./ratio)

end if




res at cnMinLevelValF=lower

res at cnMaxLevelValF=upper




res at lbBoxLinesOn=False




 

plot = gsn_csm_contour(wks, VAR3, res)
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