<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">gdal_grid command can convert OGR to GDAL formats, but you need to only have point data. Your line shape file won't work with it.<div>So if you can convert your lines into a set of points, and you will need a Z or elevation point or attribute to point gdal_grid to.</div><div><br></div><div>Perhaps you already have the point data in your grass dataset that you could export to GDAL. But I also suspect you just do all you need to in grass itself.</div><div><br></div><div>Tyler</div><div><br><div><div><div>On 2013-01-29, at 11:04 AM, Murat BEYHAN wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Dear All,<br><br>Is it possible to obtain dem grid data from shapefile using gdal or ogr.<br>info about shape file as follows<br><br>murat@murat:~/maps$ ogrinfo -so -al e34c3_n.shp<br>INFO: Open of `e34c3_n.shp'<br> using driver `ESRI Shapefile' successful.<br><br>Layer name: e34c3_n<br>Geometry: Line String<br>Feature Count: 4047<br>Extent: (697857.170000, 4597069.190000) - (708674.200000, 4611236.780000)<br>Layer SRS WKT:<br>(unknown)<br>UserId: Real (11.0)<br>FNODE_: Real (11.0)<br>TNODE_: Real (11.0)<br>LPOLY_: Real (11.0)<br>RPOLY_: Real (11.0)<br>LENGTH: Real (18.5)<br>CVRGE34C3#: Integer (5.0)<br>CVRGE34C3-: Integer (5.0)<br>DETAY: String (12.0)<br>SEMBOL: Integer (3.0)<br>YUKSEKLIK: Real (12.3)<br><br>I have installed and use grass, GMT and qgis, but I'm not good at GIS. My<br>purpose is to obtain slope map of topographic data. <br><br>any suggestion appreciated.<br>Regards<br><br>Murat<br><br><br>-- <br>This message has been scanned for viruses and<br>dangerous content by MailScanner, and is<br>believed to be clean.<br><br>_______________________________________________<br>gdal-dev mailing list<br><a href="mailto:gdal-dev@lists.osgeo.org">gdal-dev@lists.osgeo.org</a><br>http://lists.osgeo.org/mailman/listinfo/gdal-dev<br></div></blockquote></div><br><div>
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