Re: Lat long line labels

Hi David,

There's no automatic way to add lat/lon labels to a masked LC plot.

I created an example showing how you might do this using gsn_add_text. Please see example 4 at:

http://www.ncl.ucar.edu/Applications/lcmask.shtml

--Mary

On Jan 23, 2011, at 11:07 PM, David Small wrote:

> Hi everyone,
>
> I'm plotting vectors/scalar and then laying two other contours over with the overlay function. The masked lambert conformal map doesn't display labels for the latitude and longitude lines. Can anyone tell me how to turn them on?
>
> Thanks.
>
> David Small
>
> wks = gsn_open_wks("eps" ,"TROP."+year(j)+"."+month(j)+"."+day(j)+"."+hour(j)) ; open a ps file
> gsn_define_colormap(wks,"ViBlGrWhYeOrRe") ; choose colormap
>
> res2 = True
> res2@mpProjection = proj
> res2@gsnMaskLambertConformal = True
> res2@cnFillOn = True ; color fill
> res2@cnLinesOn = False ; no contour lines
> res2@gsnSpreadColors = True ; use total colormap
> res2@mpGridAndLimbOn = True
> res2@pmTickMarkDisplayMode = "Always" ; turn on tickmarks
>
> res2@gsnAddCyclic = True ; regional data
> res2@mpMinLatF = lato ; range to zoom in on
> res2@mpMaxLatF = latf
> res2@mpMinLonF = lono
> res2@mpMaxLonF = lonf
> res2@mpCenterLonF = lonc
> res2@lbOrientation = "horizontal"
> res2@gsnMaximize = True ; must include w/ Paper Orientation
>
>
> res2@gsnScalarContour = True ; vectors over scalars
>
> res2@cnLevelSelectionMode = "ManualLevels"
> res2@cnMinLevelValF = 260 ; min lev
> res2@cnMaxLevelValF = 380 ; max lev
> res2@cnLevelSpacingF = 5
> res2@gsnMaximize = True ; enlarge plot
> res2@cnLineLabelsOn = False
> res2@gsnStringFont = "times-roman"
> res2@mpFillOn = True
> res2@mpOutlineBoundarySets = "Geophysical"
> res2@mpDataResolution = "Fine"
> res2@mpFillOn = False
>
> res2@vcRefMagnitudeF = 10.0 ; define vector ref mag
> res2@vcRefLengthF = 0.020 ; define length of vec ref
> ; res2@vcGlyphStyle = "CurlyVector" ; turn on curly vectors
> res2@vcGlyphStyle = "WindBarb" ; turn on curly vectors
> res2@vcMinDistanceF = 0.02 ; thin vectors
> res2@vcRefAnnoOrthogonalPosF = .1 ; move ref vector down
> res2@mpDataBaseVersion = "MediumRes"
> res2@mpGeophysicalLineThicknessF = gthick
> res2@vcRefAnnoOn = False
> ; res2@vcMinDistanceF = 0.025
> res2@gsnSpreadColorStart = 2 ; Don't start at index 2.
>
>
> res2@gsnDraw = False ; don't draw
> res2@gsnFrame = False ; don't advance frame
> res2@cnLineDashPattern = 12 ; dashed lines
> res2@cnLineThicknesses = 1.0
> res2@cnLineLabelFontHeightF = .0045
>
> res2@cnInfoLabelFontHeightF = 0.0
>
> res2@mpFillOn = False
> res2@mpGeophysicalLineThicknessF = gthick
>
> res2@mpGridLineThicknessF = 0.5
>
>
> res2@gsnLeftString = ""
> res2@gsnRightString = nme
>
> dres@gsnLeftString = ""
> dres@gsnRightString = ""
>
> res2@lbLabelAutoStride = True
> res2@tmLabelAutoStride = True
> res2@tmXTOn = True
> res2@tmYROn = True
>
> res2@mpOutlineDrawOrder = "PostDraw"
>
> res2@tmXTLabelsOn = True
> res2@tmYRLabelsOn = True
> res2@tmXBLabelFont="times-roman"
>
> plot = gsn_csm_vector_scalar_map(wks,u(j,:,:),v(j,:,:),f(j,:,:),res2)
> plot3 = gsn_csm_contour(wks,VORT850(j,:,:),vres)
> overlay(plot,plot3)
> plot2 = gsn_csm_contour(wks,dv(j,:,:),dres)
> overlay(plot,plot2)
>
> draw(plot)
> frame(wks)
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Received on Mon Jan 24 12:41:36 2011