Sounds doable. Grab the ChangeProjection DX module which is built on
USGS's Proj4 library. Once you get the args set right for your forward or
backward projection, it's trivial to use.
A few years ago I did some precip viz work with it in Polar
Stereographic (point and grid data), so it should work for you. Let me
know if you need help setting the parameters, or if you have trouble
finding this on the net. I probably have it saved off somewhere. I don't
know where its official home is anymore.
Randy
Ray D Wright:
|I'm new to dx, and would like to find a way to do regridding of data
|from one geographic projection to a target, smaller, grid with a
|different projection. Somewhere along the way, it would be useful to see
|the land outlines (of Europe, & W.Asia) for orientation of the output grid.
|
|Specifically, I need to read in an ASCII file with x,y coordinates of a
|Polar Stereographic grid, plus a value for each grid square (annual
|emission of sulphur dioxide, say), then I need to visualise it, with the
|land and nation outlines of Europe and W.Asia on a Lambert Conformal
|grid, Then I need to overlay a Lambert Conformal output grid (covering
|just the UK, say) and output an ASCII three-column file (x,y,emission
|value) for all cells of the output grid.
|
|I know this sort of thaing has been done in (expensive) professional GIS
|systems, and I'm sure it can be done in dx. If anybody has any ideas on
|this, I'd be very interested to hear from you.
