[ncl-talk] Open a single level in GRIB2

[Alan Brammer]

The request by Dennis will help clarify answers, but given the comment on your read in line I would imagine the below to work. 

pa = 50000 ; 		lv_ISBL0 are typically in Pascals check the output of ncl_filedump to make sure though. 

v = f-> VGRD_P0_L100_GLL0({pa},:,:)

Documentation here, as well as the reference manual in general. 
http://www.ncl.ucar.edu/Document/Language/subscript_coord.shtml <http://www.ncl.ucar.edu/Document/Language/subscript_coord.shtml>




> On 8 Jun 2016, at 23:43, Dennis Shea <shea at ucar.edu> wrote:
> 
> What does
> 
> %> ncl_filedump 2900.grb2
> 
> return
> 
> On Wed, Jun 8, 2016 at 8:42 PM, Miriam Teresita Llanes Monteagudo <miriam.llanes64 at gmail.com <mailto:miriam.llanes64 at gmail.com>> wrote:
> Hello
> To open a file .grb2 I use the following command
> 
> f = AddFile ("2900.grb2", "r")
> 
> v = f-> VGRD_P0_L100_GLL0 ; [lv_ISBL0 | 26] x [lat_0 | 361] x [lon_0 | 720]
> 
> Thus it opens me to all vertical levels, longitudes and latitudes, but I dont know how to open it only to a specific level, as well as the latitude and longitude. I need to know how I open only the level of 50000 Pa, in a given space
> 
> Thank you very much
> 
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