[ncl-talk] Ease grid map is misaligned
Ipshita Majhi
ipmajhi at alaska.edu
Thu Jun 2 15:30:39 MDT 2016
Hi Mary,
I noticed that my plot has straight lines that run through it. I removed
part of those lines when I commented out res at trGridType = "TriangularMesh.
But some of the lines still remain.
How do I remove those lines?
I am attaching my code and the picture of the map with this email.
**************************************************************************
;*******************************************
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"
;*******************************************
;============================================
; set up parameters
;============================================
;********************************************
;This is reading in Snow water equivalent which goes from 0 to 250 mm
; from 1982 to 2012
;********************************************
a=addfile("/Users/ipshita/Desktop/GlobsnowV2.0/version02/monthly_82_13.nc
","r")
b=addfile("/Users/ipshita/Desktop/GlobsnowV2.0/version02/2011/
GlobSnow_SWE_L3A_20110101_v2.0.nc","r")
swe=a->swe
time=a->time
lat=b->lat
lon=b->lon
swe at lat2d=lat
swe at lon2d=lon
printMinMax(lat,False)
printMinMax(lon,False)
swe_FillValue=-9.99e+08
printVarSummary(swe)
utc_date = cd_calendar(time, 0)
year=utc_date(:,0)
month=utc_date(:,1)
;********************************************
;*******************************************
; Create plots
;*******************************************
wks = gsn_open_wks("png","ease_map")
gsn_define_colormap(wks,"amwg") ; Change color map
res = True ; Plot modes desired.
res at gsnMaximize = True ; Maximize plot
;---This resource not needed in V6.1.0
res at gsnSpreadColors = True ; use full range of colormap
res at cnFillOn = True ; color plot desired
res at cnLinesOn = False ; turn off contour lines
res at pmLabelBarWidthF = 0.9 ; make wider
res at pmLabelBarHeightF = 0.1 ; default is taller
res at lbLabelFontHeightF = .018 ; default is HUGE
; res at cnLevelSelectionMode= "ExplicitLevels" ; set explicit contour
levels
; res at cnLevels = (/0,1,5,10,25,100,200,300,400/)
;************************************************
;No georeferencing: simple contour. Draws faster
;************************************************
res at tiMainString = "Polar Plot"
; plot = gsn_csm_contour(wks,swe(0,:,:),res) ; contour, no map
;*******************************************
; georeferencing: plot on polar projection
;*******************************************
; res at trGridType = "TriangularMesh" ; allow missing coordinates
res at gsnAddCyclic = False
res at gsnPolar = "NH" ; specify the hemisphere
res at mpMinLatF = 35
res at tiMainString = "gsn_csm_contour_map_polar"
plot = gsn_csm_contour_map_polar(wks,swe(0,:,:),res)
On Wed, Jun 1, 2016 at 3:49 PM, Mary Haley <haley at ucar.edu> wrote:
> Hi Ipshita,
>
> This is indeed strange.
>
> As a quick test, can you try (for the gsn_csm_contour_map plot):
>
> res at gsnAddCyclic = False
>
> Also, are you getting any kind of error messages?
>
> You can also try using raster contours:
>
> res at cnFillMode = "RasterFill"
>
> If you continue to have problems, we may need to take a look at your data,
> and in particular the lat/lon arrays on the file. It looks like you are
> doing everything correctly otherwise.
>
> --Mary
>
>
> On Wed, Jun 1, 2016 at 5:33 PM, Ipshita Majhi <ipmajhi at alaska.edu> wrote:
>
>> Dear NCL,
>>
>> I have been trying to plot this map correctly for a long time. I don't
>> know where I am going wrong. I will be grateful if you could guide me on
>> this. I am also attaching the pdf version of the map I am getting.
>>
>> Best Regards
>> Ipshita
>> ;***************************************************
>> ;*******************************************
>> 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"
>> ;*******************************************
>>
>> ;============================================
>> ; set up parameters
>> ;============================================
>>
>> ;********************************************
>> ;This is reading in Snow water equivalent which goes from 0 to 250 mm
>> ; from 1982 to 2012
>> ;********************************************
>>
>> a=addfile("/Users/ipshita/Desktop/GlobsnowV2.0/version02/monthly_82_13.nc
>> ","r")
>>
>> swe=a->swe
>>
>> time=a->time
>> lat=a->lat
>> lon=a->lon
>>
>> swe_FillValue=-9.99e+08
>>
>> printVarSummary(swe)
>>
>> utc_date = cd_calendar(time, 0)
>> year=utc_date(:,0)
>> month=utc_date(:,1)
>>
>> ;********************************************
>>
>> ;*******************************************
>> ; Create plots
>> ;*******************************************
>>
>> wks = gsn_open_wks("pdf","ease_map")
>> gsn_define_colormap(wks,"amwg") ; Change color map
>>
>> res = True ; Plot modes desired.
>> res at gsnMaximize = True ; Maximize plot
>>
>> ;---This resource not needed in V6.1.0
>> res at gsnSpreadColors = True ; use full range of
>> colormap
>>
>> res at cnFillOn = True ; color plot desired
>> res at cnLinesOn = False ; turn off contour lines
>> res at pmLabelBarWidthF = 0.9 ; make wider
>> res at pmLabelBarHeightF = 0.1 ; default is taller
>> res at lbLabelFontHeightF = .018 ; default is HUGE
>>
>> res at cnLevelSelectionMode= "ExplicitLevels" ; set explicit contour
>> levels
>> res at cnLevels = (/0,1,5,10,25,100,200,300,400/)
>>
>> ;************************************************
>> ;No georeferencing: simple contour. Draws faster
>> ;************************************************
>> res at tiMainString = "gsn_csm_contour"
>> plot = gsn_csm_contour(wks,swe,res) ; contour, no map
>>
>> ;*******************************************
>> ; georeferencing: plot on polar projection
>> ;*******************************************
>> ; georeference
>> swe at lat2d = a->lat
>> swe at lon2d = a->lon
>>
>> res at trGridType = "TriangularMesh" ; allow missing coordinates
>>
>> res at gsnPolar = "NH" ; specify the
>> hemisphere
>> res at mpMinLatF = 35
>> res at tiMainString = "gsn_csm_contour_map_polar"
>>
>> plot = gsn_csm_contour_map_polar(wks,swe(0,:,:),res)
>>
>>
>> --
>> Ipshita Majhi
>> PhD Candidate
>> University of Alaska , Fairbanks
>> Atmospheric Science Department
>> (907)978-4220 ipmajhi at alaska.edu
>>
>> _______________________________________________
>> ncl-talk mailing list
>> ncl-talk at ucar.edu
>> List instructions, subscriber options, unsubscribe:
>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>
>>
>
--
Ipshita Majhi
PhD Candidate
University of Alaska , Fairbanks
Atmospheric Science Department
(907)978-4220 ipmajhi at alaska.edu
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