Hi Stu:
Its not correctly assigning the coordinate transform.
Add the following attributes to the TM variable:
:_CoordinateTransformType = "Projection";
:_CoordinateAxisTypes = "GeoX GeoY";
Stuart Wier wrote:
John,
>
> can you send the acctual netcdf file, or put it on ftp?
>
It is on http://geon.unavco.org/unavco/NETCDF/Kanto_m8.nc
I also have the latitude and longitude for each grid point, 6020 unique
locations, if that would help. But they do not form a regular grid with
uniform spacing so I could not see how to make them into dimensions for
a grid.
Thanks for your help
Stu
Hi stu:
can you send the acctual netcdf file, or put it on ftp?
Subject:
IDV - NetCDF format for xyz data grid mapping to transverse Mercator
From:
"Stuart Wier" <wier@xxxxxxxxxx>
Date:
Wed, 21 Dec 2005 11:04:44 -0700 (MST)
To:
support-idv@xxxxxxxxxxxxxxxx
To:
support-idv@xxxxxxxxxxxxxxxx
Institution: UNAVCO
Package Version: 1.2b2
Operating System: linux
Hardware Information: the usual
Inquiry: I have a GEON IDV user who has a regular xy-depth grid with
5 km spacing, and knows the mapping to a transverse Mercator
projection. I made a NetCDF file whose CDL is attached. The NetCDF
file appears in the IDV as a 3d grid ok, the depth levels are ok, but
it seems the x and y values are taken for lon and lat. Can the cdl
header information be changed so this will appear at the true grid
location, a small area near 139 E, 36N?
This looks to be a pretty standard kind of upper mantle data in the
solid earth sciences so I expect to see a continuing demand for use
of data like this in the IDV.
Is "false_easting" required for the transverse mercator mapping? I am
not clear what it is for.
Stuart
Most of the parameter data values are cut from the file to save space.
