<HTML dir=ltr><HEAD><TITLE>[OSM-talk] gdalwarp question</TITLE>
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<DIV dir=ltr><FONT size=2>> Hello, i have an image that can be wrapped around<BR>> a sphere, its x / y coordinates directly map to latitude / longitude.<BR><BR>What do you mean by that?<BR>Do you mean that when you open it with some GIS app, the status bar tells the correct (lat, lon) of the place where the mouse is?<BR>Some GIS apps reproject raster files by default without explicitly letting the user know. Use this utility and tell us the output:<BR><BR>gdalinfo <filename><BR><BR></FONT><FONT size=2>> Is that enough information to tell the SRS of that image?<BR><BR>Strictly, no, but if we talk about (lat, lon), the EPSG:4326 coordinate system is by far the most common, so if your coordinates are originally in (lat, lon), they are very likely to be in EPSG:4326.<BR><BR>> Background is that i'd like to transform that image so it matches<BR>> the SRS used in osm.xml. Would that be WGS84? Or is it called<BR>> epsg:4326? (Do they mean the same?)<BR><BR>Yes, informally, when people say WGS84 they mean EPSG:4326. Ask Mr Google or the wikipedia for details....<BR><BR>> Thanks for any hints, Torsten.<BR><BR><BR>Regards</FONT></DIV>
<DIV dir=ltr><FONT size=2>Juan Lucas</FONT></DIV>
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