[ncl-talk] Overlay a box and a marker over WRF field
Rabah Hachelaf
hachelaf at sca.uqam.ca
Tue May 26 19:06:45 MDT 2015
Hi Alex ,
When i add
opts at gsnDraw = False
opts at gsnFrame = False
or
res at gsnDraw = False
res at gsnFrame = False
and also
pltres at gsnDraw = False
pltres at gsnFrame = False
I get only grid with the box and the marker like attached.
2015-05-26 20:47 GMT-04:00 Alex Schaefer <alexander.schaefer at mines.sdsmt.edu
>:
> Rabah,
>
> Where in your script did you add the resources suggested by Jared?
>
> Since you have a bunch of different resource objects you will need to set
> it in each going into plots controlling plot resources. For you this should
> include res or opts and likely pltres.
>
> -Alex
>
>
> On May 26, 2015, at 6:36 PM, Rabah Hachelaf <hachelaf at sca.uqam.ca> wrote:
>
> Hi Jared,
>
> Thanks for your reponse,
>
> But add
>
>
> res at gsnDraw = False
> res at gsnFrame = False
>
> doesn't change any things.
>
> Rabah
>
>
> 2015-05-26 18:34 GMT-04:00 Jared Lee <jaredlee at ucar.edu>:
>
>> Hi Rabah,
>>
>> I believe what you're missing is these two lines where you set other
>> 'res' resources:
>>
>> res at gsnDraw = False
>> res at gsnFrame = False
>>
>> By default they're both set to True, which would give you two separate
>> images. If you set both to false you should get a single plot with your
>> polymarker overlaid.
>>
>> Hope that helps.
>>
>> Jared
>>
>> On Tue, May 26, 2015 at 4:21 PM, Rabah Hachelaf <hachelaf at sca.uqam.ca>
>> wrote:
>>
>>>
>>>
>>> Hello NCL users,
>>>
>>> I am using the script below to plot a box and a marker dot over
>>> topography field from WRF outputs,
>>>
>>> My problem is i can not get one figure, i get two separate figures like
>>> attached.
>>>
>>> Any suggestion to solve this.
>>>
>>>
>>>
>>>
>>>
>>> ; Example script - plot terrain (using some basic WRF scripts)
>>> ; Overwrite basic map background settings
>>> ; November 2008
>>>
>>> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
>>> load "$NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl"
>>>
>>> begin
>>>
>>> a = addfile("../geo_em.d02.nc","r") ; Open a file
>>> filename = "../namelist.wps"
>>>
>>> npres= True
>>> npres at ref_lat = stringtofloat(systemfunc("grep ref_lat "
>>> +filename+ " | cut -f2 -d'=' | cut -f1 -d','" ) )
>>> npres at ref_lon = stringtofloat(systemfunc("grep ref_lon "
>>> +filename+ " | cut -f2 -d'=' | cut -f1 -d','" ) )
>>>
>>> type = "png"
>>> wks = gsn_open_wks(type,"plt_geo_6") ; Create a plot
>>> workstation
>>>
>>>
>>> opts = True ; Set some Basic Plot
>>> options
>>> opts at MainTitle = "GEOGRID FIELDS"
>>> opts at InitTime = False ; Do not plot time or
>>> footers
>>> opts at Footer = False
>>>
>>> ter = wrf_user_getvar(a,"HGT_M",0) ; Read the variable to
>>> memory
>>> lon = a->XLONG_U(0,:,:)
>>> lat = a->XLAT_U(0,:,:)
>>> printVarSummary(lat)
>>>
>>> print (lat(0,0)+", "+lon(0,0)+",0,")
>>> print (lat(0,60)+", "+lon(0,60)+",0,")
>>> print (lat(59,60)+", "+lon(59,60)+",0,")
>>> print (lat(59,0)+", "+lon(59,0)+",0")
>>>
>>>
>>> res = opts ; Use basic options for
>>> this field
>>> res at cnFillOn = True ; Create a color fill
>>> plot
>>> res at ContourParameters = (/ 0., 1000., 50. /) ; Set the levels
>>>
>>> contour = wrf_contour(a,wks,ter,res)
>>>
>>> pltres = True ; Set plot options
>>> mpres = True ; Set map options
>>> mpres at mpGeophysicalLineColor = "Black" ; Overwrite basic map
>>> settings
>>> mpres at mpGridLineColor = "Black"
>>> mpres at mpLimbLineColor = "Black"
>>> mpres at mpNationalLineColor = "Black"
>>> mpres at mpPerimLineColor = "Black"
>>> mpres at mpUSStateLineColor = "Black"
>>> mpres at mpProjection = "LambertConformal"
>>> mpres at mpLambertParallel1F = 30
>>> mpres at mpLambertParallel2F = 60
>>> mpres at mpLambertMeridianF = -98
>>> mpres at mpGridSpacingF = 0.25
>>> ;************************************************
>>> ; add the box
>>> ;************************************************
>>> ;************************************************
>>> ypts = (/ lat(10,10), lat(10,50), lat(49,50), lat(49,10), lat(10,10)/)
>>> xpts = (/ lon(10,10), lon(10,50), lon(49,50), lon(49,10), lon(10,10)/)
>>> ;************************************************
>>>
>>> resp = True ; polyline mods
>>> desired
>>> resp at gsLineColor = "black" ; color of lines
>>> resp at gsLineThicknessF = 2.0 ; thickness of lines
>>> ; resp at gsLineLabelString= "test" ; adds a line
>>> label string
>>>
>>>
>>>
>>> plot = wrf_map_overlays(a,wks,(/contour/),pltres,mpres) ; Plot field
>>> over map background
>>>
>>>
>>> dum = new(4,graphic)
>>> do i = 0 , 3
>>> dum(i)=gsn_add_polyline(wks,plot,xpts(i:i+1),ypts(i:i+1),resp)
>>> end do
>>> ;*********************************************************
>>> mpres at gsMarkerColor = "Black"
>>> mpres at gsMarkerIndex = 16
>>> mpres at gsMarkerSizeF = 0.005
>>> gsn_polymarker(wks,plot,npres at ref_lon,npres at ref_lat,mpres)
>>>
>>> draw(plot)
>>> frame(wks)
>>>
>>> end
>>>
>>> --
>>> ------------------------------
>>> Cordialement,
>>> Best regards,
>>> Rabah Hachelaf
>>>
>>> _______________________________________________
>>> ncl-talk mailing list
>>> List instructions, subscriber options, unsubscribe:
>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>
>>>
>>
>>
>> --
>> ===============================
>> Jared A. Lee, Ph.D.
>> Project Scientist I
>> Research Applications Laboratory
>> National Center for Atmospheric Research
>> Boulder, Colorado, USA
>>
>> Email: jaredlee at ucar.edu (w)
>> Phone: 303.497.8485 (w)
>> Web: https://staff.ucar.edu/users/jaredlee
>> ===============================
>>
>> _______________________________________________
>> ncl-talk mailing list
>> List instructions, subscriber options, unsubscribe:
>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>
>>
>
>
> --
> ------------------------------
> Cordialement,
> Best regards,
> Rabah Hachelaf
> _______________________________________________
> ncl-talk mailing list
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
>
>
--
------------------------------
Cordialement,
Best regards,
Rabah Hachelaf
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