<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1435360631002_3096">Using this:</div><div id="yui_3_16_0_1_1435360631002_3104"><br></div><div dir="ltr" id="yui_3_16_0_1_1435360631002_3103">>> dtm>gdalwarp -s_srs EPSG:4326 -t_srs EPSG:3857 -r bilinear -te -2<br class="">0037508.34 -20037508.34 20037508.34 20037508.34 -of GTiff globe.vrt globe_3857_gdal.tif</div><div id="yui_3_16_0_1_1435360631002_3152" dir="ltr"><br></div><div class="">Returned this message</div><div class=""><br></div><div class=""><br></div><div dir="ltr" id="yui_3_16_0_1_1435360631002_3155" class="">>>Creating output file that is 194835P x 194835L.<br class="">>>Processing input file globe.vrt.<br class="">>>Using internal nodata values (eg. 0) for image merged.vrt.</div><div id="yui_3_16_0_1_1435360631002_3162" dir="ltr" class=""><br></div><div id="yui_3_16_0_1_1435360631002_3163" dir="ltr" class="">All my 'NoData' values are now '0' and I was wondering if there was a way to just keep them as 'NoData' (and still transparent when read by ArcMap - as the globe.vrt is now).<br class=""></div><div id="yui_3_16_0_1_1435360631002_3155" class=""><br class=""></div></div></body></html>