Hi, I used the 1st example on Classification (Categorical) Data page
to make the following plot ( attached).
I want the label bar to go from 1 to 24. For some reason the label bar
is not starting at "1" and is only plotting every 2nd number, even
though I use the command(s):
res@lbOrientation = "vertical"
res@lbLabelPosition = "Center" ; label position
res@lbLabelAlignment = "BoxCenters" ; label orientation
res@lbLabelStrings = ispan(1,24,1)
How may I fix this?
Thank you ahead of time.
Sincerely.
-- - Erik - SCRIPT ________ ;================================================ ; based on vegland_1.ncl ;================================================ ; Concepts illustrated: ; - Creating a vegetation classification plot using raster contours ; - Plotting "byte" data ; - Customizing a labelbar for a contour plot ; - Centering labels with respect to labelbar boxes ; - Changing the width and height of a labelbar ; - Centering the labels inside each box in a labelbar ; - Changing the labelbar labels ; - Drawing text on the frame using NDC coordinates ; - Using the "where" function to create a land-sea mask ;================================================ load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl" load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl" load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl" begin diri = "./" ; input directory fili = "post_wrfout_d01_2006-09-02_00:00:00.nc" ;---read in data dir = "./" a = addfile(diri+fili,"r") veg = a->LandUse(0,:,:) lat = a->latitude lat!0 = "lat" lat@units = "degrees_north" lon = a->longitude lon!0 = "lon" lon@units = "degrees_east" latRange = (/min(lat), max(lat)/) lonRange = (/min(lon), max(lon)/) ; Add meta data for plotting purposes ;fix ; go back laveg and fix in wrf script veg!0 = "lat" veg!1 = "lon" veg&lat = lat veg&lon = lon info = (/ " 1 Urban or Built Land", \ ; n=0 " 2 Dry C&P ", \ " 3 Irrigated C&P", \ " 4 Mixed C&P ", \ " 5 Cropland/Grassland", \ " 6 Cropland/Woodland", \ " 7 Grassland", \ " 8 Shrubland", \ " 9 Mixed Shrub/Grass", \ "10 Savanna", \ "11 Deciduous Broadleaf", \ "12 Deciduous Needleleaf", \ "13 Evergreen Broadleaf", \ "14 Evergreen Needleleaf", \ "15 Mixed Forest", \ "16 Water Bodies ", \ "17 Herbaceous Wetland", \ "18 Wooden Wetland", \ "19 Barren", \ "20 Herbaceous Tundra", \ "21 Wooded Tundra", \ "22 Mixed Tundra", \ "23 Bare Ground Tundra", \ "24 Snow or Ice" /) ; n=23 colors = (/ "white","black","purple", \ ; n=0 "coral", \ ;2 "coral2", \ ;3 "chocolate1", \ ;4 "lightgoldenrod1", \ ;5 "chocolate4", \ ;6 "darkolivegreen2", \ ;7 "darkolivegreen1", \ ;8 "greenyellow", \ ;9 "darkolivegreen3", \ "green2", \ "darkkhaki", \ "darkolivegreen", \ "darkgreen", \ "limegreen", \ "blue", \ ; water; deepskyblue2 "orange1", \ "orange3", \ "gold1", \ "lightslategrey", \ "lightsteelblue2", \ "lightsteelblue1", \ "lightyellow3", \ "lightyellow1" /) ; n=23 ;************************************************ ; create plot ;************************************************ wks = gsn_open_wks("pdf","domain_veg") gsn_define_colormap(wks, colors) res = True ; plot mods desired res@gsnDraw = False res@gsnFrame = False ; res@gsnMaximize = True res@cnFillOn = True ; color Fill res@cnFillMode = "RasterFill" ; Raster Mode res@cnLinesOn = False ; Turn off contour lines res@cnLevelSelectionMode = "ExplicitLevels" ; set explict contour levels res@cnLevels = integertobyte( ispan(2,24,1) ) res@lbOrientation = "vertical" res@lbLabelPosition = "Center" ; label position res@lbLabelAlignment = "BoxCenters" ; label orientation res@lbLabelStrings = ispan(1,24,1) ; res@pmLabelBarHeightF = 0.075 ;res@pmLabelBarWidthF = 0.60 ; default is 0.6 res@pmLabelBarOrthogonalPosF = -0.0005 ; move up smidge ;res@mpCenterLonF = 0 ; set map center res@mpFillOn = False ;=======;zoom part res@gsnAddCyclic = False ;res@mpProjection = "Mercator" res@mpLimitMode = "Corners" res@mpLeftCornerLatF = latRange(0) res@mpLeftCornerLonF = lonRange(0) res@mpRightCornerLatF = latRange(1) res@mpRightCornerLonF = lonRange(1) res@pmTickMarkDisplayMode = "Always" ; Toggle b/t these two for tick mark effect res@mpGridAndLimbOn = True res@mpGridSpacingF = 5 res@mpGridLineThicknessF = 1.0 res@mpGridLineColor = "Gray30" res@tmXBTickSpacingF = 15 res@tmYLTickSpacingF = 10 res@tmXBLabelFontHeightF = 0.015 res@tmYLLabelFontHeightF = 0.015 res@mpFillOn = False res@gsnLeftString = "Land Use" res@gsnCenterString = "WRF Model Domain" res@gsnRightString = "USGS Categories" res@txFontHeightF = 0.015 res@pmTickMarkDisplayMode = "Always" ; Toggle b/t these two for tick mark effect plot = gsn_csm_contour_map_ce(wks, veg, res) ; create plot ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;Overlay boxes over regions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;************************************************ ; create points for box1 ;************************************************ ypts1 = (/ 20.0, 20.0, 5.0, 5.0, 20.0/) xpts1 = (/-20.0, 10.0,10.0, -20.0,-20.0/) ;************************************************ ; add the boxes ;************************************************ res1 = True ; polyline mods desired res1 = res res1@gsLineColor = "red" ; color of lines res1@gsLineThicknessF = 8.0 ; thickness of lines ; create array of dummy graphic variables. This is required, b/c each line ; must be associated with a unique dummy variable. dum1 = new(4,graphic) ; draw each line separately. Each line must contain two points. do i = 0 , 3 dum1(i)=gsn_add_polyline(wks,plot,xpts1(i:i+1),ypts1(i:i+1),res1) end do ;************************************************ ; label the box with additional text ;************************************************ ; tres = True ; tres@txFontHeightF = 0.015 ; tres@txFontColor = "red" ; gsn_text(wks,plot,"Sahel",0.0,13.0,tres) ; Catagories rtxt = True rtxt@txJust = "CenterLeft" rtxt@txFontHeightF = 0.009 ; 4 rows x 6 columns of text n = -1 xx = .04 do ncol=0,5 yy = 0.16 do nrow=0,3 n = n+1 gsn_text_ndc (wks,info(n),xx,yy,rtxt) yy = yy - 3*rtxt@txFontHeightF end do xx = xx + 0.155 end do draw(plot) frame(wks) end
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