[gradsusr] MODIS07 Level 2 data product.

[James E. Johnson]

On Tuesday 05 November 2013 11:05:12 pm Maha lakshmi wrote:
> Hi
> I have downloaded MOD07_L2 product from LADS Website
> I am not unable to open in Grads.

Do you realize that Level-2 data are not regularly GRIDDED data, i.e. GrADS 
stands for Grid Analysis and Display System and is designed for GRIDDED data. 
MODIS Level-2 data are 5-minute Swaths.

It may be possible to read in Level-2 data by constructing a control file and 
perhaps defining each Level-2 swath pixel as point data. I.e., it won't be 
simple reading these into GrADS.
------------------------------------------------------------------------------
| James E. Johnson                   | address:                              |
| ADNET Systems, Inc.                |  NASA Goddard Space Flight Center     |
| e-mail: james.johnson at nasa.gov     |  Data and Information Services Center |
| phone:  301-614-5121               |  Code 610.2, Bldg 32, Room S130G      |
| fax:    301-614-5268               |  Greenbelt, MD  20771                 |
------------------------------------------------------------------------------

> I am using windows based OpenGrads.
> I am getting error mentioned below.
> Thanking you in advance.
> My fine name is MOD07_L2.A2013001.0510.005.2013001132505.hdf.
> 
> 
> ga-> sdfopen MOD07_L2.A2013001.0510.005.2013001132505.hdf
> Scanning self-describing file: 
>  MOD07_L2.A2013001.0510.005.2013001132505.hdf gadsdf: SDF file has no
>  discernable X coordinate.
>   To open this file with GrADS, use a descriptor file with an XDEF entry.
>   Documentation is at http://iges.org/grads/gadoc/SDFdescriptorfile.html
>