Hi Chao,
You don't want to use the wrf_xxx functions on non-WRF data.
Maybe the "getind_latlon2d" function will work for you:
http://www.ncl.ucar.edu/Document/Functions/Contributed/getind_latlon2d.shtml
--Mary
On Apr 4, 2013, at 2:36 PM, Luo, Chao wrote:
> Hello,
>
> I am working on the comparisons between observations and CMAQ model output, and try to find coordinator of i,j according to lat/lon of observed sites by using wrf_ll_to_ij function. ref_lat and ref_lon in this function must be from WRF domain definition, since our CMAQ model central lat and central lon (output by mcip) are not same as WRF, and how to calculate input parameters KNOWI and KNOWJ in this function?
> Very appreciate any suugestions and help!
>
> CL
> _______________________________________________
> ncl-talk mailing list
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk
Received on Sat Apr 6 15:18:53 2013
This archive was generated by hypermail 2.1.8 : Sun Apr 07 2013 - 21:13:30 MDT