[ncl-talk] transformation of lat/lon coordinates to Lambert coordinates

[Rick Brownrigg]

Hi Gerard,

In NCL versions >= 6.2.1, there is an undocumented interface to the Proj4
cartographic projections library. Its function signature is:

    transform_coordinate(SrcProjStr, DestProjStr, x[], y[], z[])

where the two strings are the Proj4 projection strings, and x/y/z are
arrays of type double. The transformed results are returned in the arrays,
overwriting the original values.

If you are unfamiliar with proj4 strings, send me the details of your
projection (standard parallels, center of projection, etc.) and I will send
back appropriate strings.

Hope that helps...
Rick


On Thu, Oct 27, 2016 at 8:02 AM, G. Hesselmans <hesselmans at hermess.nl>
wrote:

> NCL support
>
> I am writing python code to retrieve data from WRF results.
>
> For this purpose I would like to convert WGS84 lat/lon coordinates to the
> Lambert coordinates used by WRF.
>
> To test my code for other scripts I have been using NCL.
>
> Unfortunately, so far I have not been able to output Lambert coordinates
> from NCL.
>
> Please can you suggest how I can print Lambert coordinates after feeding
> NCL with lat/lon coordinates.
>
> Kind regards, Gerard
>
>
>
> --
> Dr. G. (Gerard) Hesselmans
> Director, Remote Sensing Expert
>
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