Hi,<br><br>Does anyone know if there is a way to automatically generate the proj4 projection keyword values for a layer, needed for the PROJECTION object for that layer in a mapfile. assuming that you have the layer's data in a file that includes projection metadata?<br>
<br>I'm interested in using MapServer to create WMS services for a bunch of raster layers, and I want to automatically generate the necessary mapfile(s) with a script that scans a directory containing a bunch of raster files, and creates the mapfile with a layer for each raster. The rasters might be in different projections (probably only a handful of different ones, but I can't predict them in advance), and I'm at a loss as to how to automatically generate the proj4 values for each layer's PROJECTION object. The raster files all have associated projection metadata with them --- I can use gdalinfo to find out the projection's WKT string, but I haven't found a way to convert that to the proj4 keyword values that are needed in the mapfile.<br>
<br>I know that I can manually load a raster layer into a desktop program such as QGIS or uDig and use the program's GUI to find the projection's proj4 values. But I need something that can be automated with a script that runs with no GUI and no human interaction.<br>
<br>Alternatively, since I can find a layer's WKT projection string using gdalinfo, it'd be really convenient if the mapfile PROJECTION object accepted WKT strings, but the mapfile documentation says that the PROJECTION object expects only proj4 keywords. Is there a way to specify a projection in a mapfile using WKT strings instead? Or a way to use gdalinfo, or some other command-line tool, to extract a file's projection as a proj4 string instead of a WKT string?<br>
<br>I've searched the docs and mailing list for info on this but haven't come up with anything; I'd appreciate any tips!<br><br>Thanks,<br><br>--Mark<br><br>