Comments on: Using gdalwarp http://egb13.net/2009/03/using-gdalwarp/ Time-lapse, weather, maps, and more Thu, 02 Feb 2012 06:12:48 -0500 http://wordpress.org/?v=2.8.6 hourly 1 By: egb13 http://egb13.net/2009/03/using-gdalwarp/comment-page-1/#comment-3811 egb13 Tue, 09 Nov 2010 16:23:10 +0000 http://www.spuzzly.com/?p=11#comment-3811 The geotiffs work well because they contain all the data that gdalwarp needs in their self-contained metadata. You need to provide that yourself for jpegs. Specifically, you need to provide the projection used by the jpeg in the -s_srs command line parameter, and you need to provide the location and extent of the image within that projection (coordinate reference system) with an accurate world file. Send me a link to those instructions you reference, and the source of those jpegs, and I'll see if I can figure out the missing pieces. Leave that info in a comment here or email me at egb13 @ this domain. The geotiffs work well because they contain all the data that gdalwarp needs in their self-contained metadata. You need to provide that yourself for jpegs. Specifically, you need to provide the projection used by the jpeg in the -s_srs command line parameter, and you need to provide the location and extent of the image within that projection (coordinate reference system) with an accurate world file.

Send me a link to those instructions you reference, and the source of those jpegs, and I’ll see if I can figure out the missing pieces. Leave that info in a comment here or email me at egb13 @ this domain.

]]> By: Videowall http://egb13.net/2009/03/using-gdalwarp/comment-page-1/#comment-3807 Videowall Tue, 09 Nov 2010 15:12:19 +0000 http://www.spuzzly.com/?p=11#comment-3807 Has anyone used Mikhail Sharonov's direction for using gdalwarp for reprojection of jpg files? Am interested in reprojecting maps from the Backtrail Mapbooks so RMPmaker will accept them. I have used gdalwarp to reproject Geotif files successfully but keep getting the same error on jpg attempts. Has anyone used Mikhail Sharonov’s direction for using gdalwarp for reprojection of jpg files? Am interested in reprojecting maps from the Backtrail Mapbooks so RMPmaker will accept them. I have used gdalwarp to reproject Geotif files successfully but keep getting the same error on jpg attempts.

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