<div dir="ltr"><div>Hi everyone, this is my first post. I've also posted this to <a href="https://stackoverflow.com/questions/78751101/labelling-contour-lines-with-ogr-style">https://stackoverflow.com/questions/78751101/labelling-contour-lines-with-ogr-style</a></div><div><br></div>I'm trying to add labels to DEM contour lines.<br><br>I'm working with GDAL 3.6.2. , which I installed using Anaconda . I have some DEM data from USGS which I wrote as a contour map to a KML file using:<br><br>    gdal_contour small.tif /home/ubuntu/node/geotools/contour.kml -i 3.0 -f KML -a ELEVATION<br><br>When I open contour.kml in vim, I can see that its made up of features like:<br><br>       <Placemark><br>             <Style><LineStyle><color>ff0000ff</color></LineStyle><PolyStyle><fill>0</fill></PolyStyle></Style><br>                <ExtendedData><SchemaData schemaUrl="#contour"><br>                 <SimpleData name="ID">39</SimpleData><br>                   <SimpleData name="ELEVATION">525</SimpleData><br>           </SchemaData></ExtendedData><br>              <LineString><coordinates>-89.2626638689733,46.1525006611575 -89.262663868958,46.1525469572921 -89.2627325352002,46.152622208059 -89.2628251277396,46.1526266807347 -89.2629177202847,46.1526141000471 -89.2629982621728,46.1525469573863 -89.2629982621882,46.1525006612516</coordinates></LineString><br>        </Placemark><br><br>Clearly there is a style component available , but I'm not sure how to work with it to add elevation labels or custom colours. My suspicion is that OGR_STYLE is used to do things like this (<a href="https://github.com/OSGeo/gdal/issues/835)(https://gdal.org/user/ogr_sql_dialect.html#ogr-style">https://github.com/OSGeo/gdal/issues/835)(https://gdal.org/user/ogr_sql_dialect.html#ogr-style</a>       ), but I can't find any examples. How can this be done?<div><br></div><div>Thank you very much,</div><div><br></div><div>KC<br>         <br></div></div>