Hi Addy,
Here is a very short script that draws a mercator projection map, shifted 45
degrees east, with the tick marks on. (Thanks to Sylvia for showing me how to
turn the tick marks on.)
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
a = addfile("test.nc","r")
array = a->PSL(0,:,:)
wks = gsn_open_wks("x11","test")
res = True
res@mpProjection = "Mercator" ; choose projection
res@mpGridAndLimbOn = True ; turn on lat/lon lines
res@mpGridLatSpacingF = 20. ; spacing for lat lines
res@mpGridLonSpacingF = 30. ; spacing for lon lines
res@mpFillOn = True
res@mpCenterLonF = 225. ; Center the plot at 225E longitude
res@pmTickMarkDisplayMode = "Always" ;Needed to turn on tick marks for
;mercator projections
plot = gsn_csm_contour_map(wks,array,res)
end
Let us know if this isn't what you were looking for.
Adam
>Delivered-To: asphilli AT ucar.edu
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>Date: Thu, 21 Oct 2004 11:45:26 +0800
>From: Addy Fu <addyfu AT hko.gov.hk>
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>Cc: Addy Fu <addyfu AT hko.gov.hk>
>Subject: Create a Rotated Mercator Map
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>Dear Everyone,
>
>I am trying to plot a map in Mercator projection with a rotation of 45
>degree clockwisely.
>
>It will be great if any of you can guide me to produce such map with
>tick mark. I tried to use mpCenterRotF but failed to generate a Mercator
>map.
>
>Thanks a lot for all your help.
>
>Best regards,
>Addy
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-------------------------------------------------------------
Adam Phillips email: asphilli AT ucar.edu
Climate and Global Dynamics Division tel: (303) 497-1726
National Center for Atmospheric Research fax: (303) 497-1333
P.O. Box 3000
Boulder, CO 80307-3000 http://www.cgd.ucar.edu/~asphilli
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