The way to access a subset of (say) a Lambert conformal
projection is via standard subscripting.
There is no magic bullet. NCL's syntax [ie the {..}]
for accessing coordinates is not possible for arrays
with two-dimensional coordinate arrays. This is not
supported by the underlying netCDF software.
The user must manually specify the subscripts.
iLowerLeft = 30
jLowerLeft = 24
iUpperLeft = 72
jUpperLeft = 26
[etc]
This could, of course, be automated.
D
>
>On Tue, 2 Nov 2004, Benjamin Lamptey wrote:
>
>> Hello,
>> The examples on the following website which illustrates how to plot
>> data with 2D lat/lon does not have an example on plotting a subset
>>
>> http://www.cgd.ucar.edu/csm/support/CSM_Graphics/popscal.shtml
>>
>> I tried
>> res@mpMinLatF = minlat
>> res@mpMaxLatF = maxlat
>> res@mpMinLonF = minlon
>> res@mpMaxLonF = maxlon
>>
>> where minlat,maxlat,minlon,maxlon are defined. But did not get a
>> satisfactory plot (see plot attached).
>>
>> I do not want to use something like
>> res@mpLimitMode = "Corners" ; choose range of map
>> res@mpLeftCornerLatF = lat2d(0,0)
>> res@mpLeftCornerLonF = lon2d(0,0)
>> res@mpRightCornerLatF = lat2d(nlon-1,nlat-1)
>> res@mpRightCornerLonF = lon2d(nlon-1,nlat-1)
>>
>> used for making plots of Lambert Confromal projection that I used when
>> I read my data from a binary file because the purpose of converting
>> the binary data files to netcdf will be defeated.
>>
>> The reason why I am converting the binary files to netcdf is because I
>> shall have to use one NCL script to make a panel plot of data from
>> different files; one file is netcdf, the 2nd file has Lambert Conformal
>> Project (binary file) and the third file has Mercator projection (binary).
>>
>> I shall appreciate any ideas.
>>
>> I also want to avoid having to set different plotting resources for the
>> different datasets if possible. If not, then that will be my last resort
>> in which case I do not need to convert my binary files into netcdf,
>> correct?
>>
>> Thanks
>> Ben
>>
>> --
>>
>>
>> Benjamin L. Lamptey Phone: (814) 865-9911 (office)
>> Pennstate (EMS Environment Institute) (814) 237-8193 (home)
>> 2217 Earth-Engineering Sciences Bldg Fax : (814) 865-3191
>> University Park, PA 16802 WWW:http://www.essc.psu.edu/~lamptey
>>
>>
>>
>>
>
>
>
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>NCAR CGD/CSEG PHN: 303-497-1720
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>Boulder CO 80305
>
>
>WEB: http://www.cgd.ucar.edu/csm/support/
> http://www.cgd.ucar.edu/csm/support/CSM_Graphics/
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