[ncl-talk] Hown to turn on color fill of map with add labelbar
Rick Brownrigg
brownrig at ucar.edu
Thu Nov 14 16:29:43 MST 2019
I spoke too soon -- I *do* know the reason this occurs: add_labelbar is
an internal function is gsn_csm.ncl! But its being redefined at the top of
your script after gsn_csm.ncl is loaded. Thus internal code within
gsn_csm.ncl ends up trying to call your version, which expects different
parameters, and things go downhill from there quickly.
So (much to my relief), if you merely rename your version of add_labelbar,
the setting of gsnOldLabelBar is not necessary (you'll probably still want
lbLabelBarOn=False or you'll still end up with 2 overlapping labelbars).
Rick
On Thu, Nov 14, 2019 at 4:22 PM Rick Brownrigg <brownrig at ucar.edu> wrote:
> 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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