[FWTools] gdalwarp questions

[Adam Yesaitis]

Hello,

I am using FW Tools version 2.4.7

I am currently trying to reproject data I have in “NAD 1983 StatePlane New Jersey FIPS 2900 (US Feet).prj(EPSG:3424)” to “WGS 1984 Web Mercator (Auxiliary Sphere).prj (EPSG:3857)”.  I input it like this:

gdalwarp -s_srs EPSG:3424 -t_srs EPSG:3857 "C:\Users\Adam Y\Desktop\GDAL\RECTIFY11212001.00.tif" "C:\Users\Adam Y\Desktop\GDAL\GDALOUT\output11.tif"

Just as a test.  It runs to completion with no errors. However, when I load the output into Arcmap the spatial reference is still undefined.  Am I missing something?

I would also like to be able to specify compression for the output image if possible.

Also I would like to be able to run this as a batch which I assume can be accomplished using the –optfile switch.  Can I make this simply point at a directory?  Or do I need a specific list of files?

Any help would be appreciated.

Thanks,

Adam Yesaitis
Western Technologies Group
Tel: 908-725-1143
Fax: 908-725-1488
adamy at wtgroupllc.com
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