Get a value at agiven lat/lon point

Hi, How can I get a discrete value at a given point, which is not necessarily on a grid point ? Does NCL interpolate ? I've tried this : ---------------------- gust = fin->GUST_P0_L1_GLC0 lat =45 lon=29 gust({lat},{lon}) ---------------------- fatal:Dimension (xgrid_0) of (gust) does not have an associated coordinate variable fatal:["Execute.c":7743]:Execute: Error occurred... Here's details on my var : Variable: gust Type: float Total Size: 4428 bytes             1107 values Number of Dimensions: 2 Dimensions and sizes:   [ygrid_0 | 27] x [xgrid_0 | 41] Coordinates: Number Of Attributes: 14   center :      US National Weather Service - NCEP (WMC)   production_status :   Operational products   long_name :   Wind speed (gust)   units :       m s-1   _FillValue :  1e+20   coordinates : gridlat_0 gridlon_0   grid_type :   Lambert Conformal can be secant or tangent, conical or bipolar   parameter_discipline_and_category :   Meteorological products, Momentum   parameter_template_discipline_category_number :       ( 0, 0, 2, 22 )   level_type :  Ground or water surface   level :        0   forecast_time :       1   forecast_time_units : hours   initial_time :        04/17/2014 (06:00) (0,0)    0 (0,1)    0 (0,2)    0 (0,3)   0.7... Thanks in advance for a reply, Yann.

_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk
Received on Fri Apr 18 08:47:54 2014