<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Hi. </div><div><br></div><div>I am a fairly new GrADS user but this is the technique I have worked out. </div><div><br></div><div>I export a dummy kml file + small tiff using gxout kml just for the Google Earth GroundOverlay <LatLonBox> coordinates. </div><div>ga-> <b>clear</b></div><div><div>ga-><b>set kml /base_kml</b></div><div>ga-><b>set gxout kml</b></div></div><div>ga-><b>d mag(UGRD10m,VGRD10m) * 3.6</b></div><div><br></div><div>Then I use printim command to export a larger image in a format like TIFF or PNG. </div><div><div><div>ga-> <b>clear</b></div><div>ga-> <b>set parea 0 11 0 8.5</b></div><div>ga-> <b>set grid off</b></div><div>grid is off</div><div>ga-> <b>set mproj scaled</b></div><div>ga-><b> set mpdraw off </b></div><div>ga-><b> set grads off</b></div><div><b><span class="Apple-style-span" style="font-weight: normal; ">ga-> </span>set gxout shaded</b></div><div><b><span class="Apple-style-span" style="font-weight: normal; ">ga-> <b>d mag(UGRD10m,VGRD10m) * 3.6</b></span></b></div></div></div><div><div>ga-> <b>printim /wind_speed_layer.tif x2048 y1024 -t 0 </b></div><div><br></div></div><div>Then I replace the reference in the KML file from the low resolution tiff to the new image on the line:</div><div> <href>/<span class="Apple-style-span" style="font-family: 'Lucida Grande'; font-size: 12px; ">base_kml.tif</span></href></div><div><br></div><div>Also in my experience Google Earth doesn't respect the transparency in GrADS TIFF or GIF exports but does in PNG exports.</div><div><br></div><div>Regards,</div><div><br></div><div>Andrew Hazelden</div><div>Weather Enthusiast</div><div><br></div><div><br></div><div><div>On 17-Sep-09, at 12:27 PM, claudio cortes wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Hi users !<br><br>I'm exporting some grib files to kml format (for view the outputs in<br>GoogleEarth), but the tiff file generated is too small.<br>Is there any way to generate kml files with big tiff files ?<br><br>--<br>Claudio Cortes<br>+56 (2) 2994121<br><br>Meteorologo<br>Laboratorio de Meteorologia y Calidad de Aire<br>Centro Nacional del Medio Ambiente (CENMA)<br>--------------------------------------------------------------------------------------<br><br>Claudio Cortes<br>+56 (2) 2994121<br><br>Meteorologist<br>Meteorology and Air Quality Labs<br>National Enviroment Center, Chile (CENMA)<br></div></blockquote></div><br></body></html>