[ncl-talk] Hown to turn on color fill of map with add labelbar

[Rick Brownrigg]

Hi,

Try adding these resources to your mpres variable:

  mpres at gsnOldLabelBar = False
  mpres at lbLabelBarOn = False

This works for me. I do not have a good explanation for why this is needed.
The gsnOldLabelBar is an undocumented, "internal", resource; its set to
True by default.  I traced into the code far enough to see that there is an
interaction with that resource=True and cnFillOn=True. But there must be
more to it than that, or otherwise we would see this issue all the time.
There's evidently a bug in there somewhere, but I am not in a position to
go track it down.

Setting lbLabelBarOn = False is not strictly necessary, but if you don't
you'll get a second labelbar that is for the terrain. In the current setup,
it partially overlaps the labelbar you are explicitly adding.

I hope that helps...
Rick

On Thu, Nov 14, 2019 at 3:23 PM juki juki <juky_emc2 at yahoo.com> wrote:

> line 216 is
>
> map = gsn_csm_contour_map(wks,data1T,mpres)
>
> This appears when I set:
>
> mpres at cnFillOn              = True     ; turn on color fill
>
> If I set
>
> mpres at cnFillOn              = False     ; turn on color fill
>
> there is no error but I want to have topography background ins the map.
>
> Juki
>
>
>
> On Friday, November 15, 2019, 05:16:20 AM GMT+7, Rick Brownrigg <
> brownrig at ucar.edu> wrote:
>
>
> What is line 216 in your script?  Is that the only error/warning messages?
>
>
>
>
>
> On Thu, Nov 14, 2019 at 2:57 PM juki juki via ncl-talk <ncl-talk at ucar.edu>
> wrote:
>
> Sorry I re-send my previous question and hope some helps.
>
> Juky
>
>
> On Wednesday, November 13, 2019, 09:43:00 PM GMT+7, juki juki via ncl-talk
> <ncl-talk at ucar.edu> wrote:
>
>
> Hi all !
>
> I am using the following add labelbar for my contour plot:
> http://www.ncl.ucar.edu/Applications/Scripts/polyg_8_lbar.ncl
>
> I am plotting the topography as the background instead of
>
> map = gsn_csm_map(wks,mpres)
>
> The following is my simple ncl:
>
>  wks = gsn_open_wks("png","polyg")              ; send graphics to PNG file
>
> ;---Set up some map resources.
>   mpres                       = True
>   mpres at gsnMaximize           = False             ; Maximize plot in
> frame.
>   mpres at gsnDraw               = False            ; Will draw later
>   mpres at gsnFrame              = False            ; Don't advance the frame
>  ; mpres at pmTickMarkDisplayMode = "Always"
>   mpres at gsnAddCyclic          = False    ; data already has cyclic point
>   mpres at mpGeophysicalLineThicknessF = 1.5          ; thickness of outlines
>   mpres at mpDataBaseVersion     = "MediumRes"  ; Medium resolution database
>   mpres at cnFillOn              = True     ; turn on color fill
>   mpres at cnLinesOn             = False    ; turn of contour lines
>
>   mpres at cnLineLabelsOn = False ;-- turns off contour line labels
>   mpres at cnInfoLabelOn = False ;-- turns off contour info label
>   mpres at cnLevelSelectionMode = "ManualLevels"    ; Set contour levels
>   mpres at cnMinLevelValF       = 200               ; the same for each plot.
>   mpres at cnMaxLevelValF       =  3000
>   mpres at cnLevelSpacingF      =   200
>
>
>   mpres at mpMinLatF             = -7.
>   mpres at mpMaxLatF             = 7.
>   mpres at mpMinLonF             = 94.
>   mpres at mpMaxLonF             = 108.
>   mpres at mpShapeMode  = "FreeAspect"
>   mpres at vpWidthF      = 0.35
>   mpres at vpHeightF     = 0.25
>
>   mpres at tmXBLabelFontHeightF = 0.01                 ; resize tick labels
>   mpres at tmYLLabelFontHeightF = 0.01
>   mpres at gsnMajorLatSpacing = 2
>   mpres at gsnMajorLonSpacing = 2
>   mpres at gsnStringFontHeightF = 0.01
>
>
>
>   map = gsn_csm_contour_map(wks,data1T,mpres)
>
> ;data1T is topography data
>
> ;--Create logical variables to hold the marker resources.
>   gsres               = True
>   gsres at gsMarkerIndex = 16          ; Use filled dots for markers.
> ;
> ; Loop through each grouping of markers, and draw them one set at
> ; a time, assigning the proper color and size with gsn_marker.
> ;
>   base_size = 0.005
>   pmid = new(num_distinct_markers,graphic)
>   do i = 0, num_distinct_markers-1
>     if (.not.ismissing(lat_new(i,0)))
>       gsres at gsMarkerColor      = colors(i,:)
>       ;gsres at gsMarkerSizeF      = base_size * (i+1)/3.
>       gsres at gsMarkerSizeF      = base_size
>       gsres at gsMarkerThicknessF = 0.7*(i+1)
>       pmid(i) = gsn_add_polymarker(wks,map,lon_new(i,:),lat_new(i,:),gsres)
>     end if
>   end do
>
> ;---Draw labelbar and advance frame.
>   add_labelbar(wks,map,levels,colors)
>   draw(map)
>   frame(wks)
>
> Question: How to turn on the color fill? When I set  mpres at cnFillOn
>         = True     ; turn on color fill, I got the following error:
>
> fatal:["Execute.c":8637]:Execute: Error occurred at or near line 7901 in
> file /usr/local/lib/ncarg/nclscripts/csm/gsn_csm.ncl
>
> fatal:["Execute.c":8637]:Execute: Error occurred at or near line 11301 in
> file /usr/local/lib/ncarg/nclscripts/csm/gsn_csm.ncl
>
> fatal:["Execute.c":8637]:Execute: Error occurred at or near line 216 in
> file rata.ncl
>
> Thank you for help
>
> Juky
>
>
>
>
>
>
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