It appears that the problem is that the convention of netcdf that I'm using
(models3) defaults to the nad83 datum instead of wgs84. Which certainly
would explain why everything is shifted. Are there any convenience fields
for creating a nad83 datum like there are for wgs84? If not what would be
the best method for creating the nad83 datum (I'm far from an expert on how
to create these things).
Thanks,
Tom
On 4/5/07, Martin Desruisseaux <[EMAIL PROTECTED]> wrote:
Tom Howe a écrit :
> Martin,
> thanks for your help. I've made some headway. Given the info in my
> netcdf file I've done the following:
>
> (...snip...)
>
> gcs is a projection Object from the ucar netcdf library. when I try to
> do a transform, I get very incorrect results. Does the above look like
> it's missing anything? Have you done any work with this stuff?
I have not yet started the work on NetCDF. The code sound good. Maybe some
point
that may worth to be checked:
- What are the units of the values returned by "gcs"? Is is degrees or
metres?
- What are the axis order expected by the NetCDF library?
- How do you perform your projection?
- Have you tried to project a single point? Which result do you expect
and which one do you get?
It may be worth to look at the output of System.out.println
(theProjectedCRS).
Martin
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