<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_1435619580995_3428" dir="ltr">Interesting.I am using GDAL 1.9.1 - so it didn't seem to be an option in this older ver.</div><div id="yui_3_16_0_1_1435619580995_3812" dir="ltr"><br></div><div id="yui_3_16_0_1_1435619580995_4157" dir="ltr">do you know how it is different then '-srcnodata None'?<br></div><div id="yui_3_16_0_1_1435619580995_3150"><span></span></div> <br><div class="qtdSeparateBR"><br><br></div><div style="display: block;" class="yahoo_quoted"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"> <font face="Arial" size="2"> On Sunday, June 28, 2015 7:30 AM, Nicolas Cadieux <nicolas.cadieux@archeotec.ca> wrote:<br> </font> </div> <br><br> <div class="y_msg_container"><div id="yiv6763966419"><div><div dir="ltr">-dstnodata value [value...]:</div>
<div dir="ltr">http://www.gdal.org/gdalwarp.html</div>
<div dir="ltr">Nicolas Cadieux M.Sc.<br clear="none">
Les Entreprises Archéotec inc. <br clear="none">
8548, rue Saint-Denis Montréal H2P 2H2<br clear="none">
Téléphone: 514.381.5112 Fax: 514.381.4995<br clear="none">
www.archeotec.ca</div>
<div class="yiv6763966419yqt2061243628" id="yiv6763966419yqt64234"><div class="yiv6763966419gmail_quote">On Jun 26, 2015 7:20 PM, Ruth Simm <goldfish_and_muskie@yahoo.com> wrote:<br clear="none"><blockquote class="yiv6763966419quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div><div style="color:#000;background-color:#fff;font-family:'helveticaneue' , 'helvetica neue' , 'helvetica' , 'arial' , 'lucida grande' , sans-serif;font-size:16px;"><div>Using this:</div><div><br clear="none"></div><div dir="ltr">>> dtm>gdalwarp -s_srs EPSG:4326 -t_srs EPSG:3857 -r bilinear -te -2<br clear="none">0037508.34 -20037508.34 20037508.34 20037508.34 -of GTiff globe.vrt globe_3857_gdal.tif</div><div dir="ltr"><br clear="none"></div><div>Returned this message</div><div><br clear="none"></div><div><br clear="none"></div><div dir="ltr">>>Creating output file that is 194835P x 194835L.<br clear="none">>>Processing input file globe.vrt.<br clear="none">>>Using internal nodata values (eg. 0) for image merged.vrt.</div><div dir="ltr"><br clear="none"></div><div dir="ltr">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 clear="none"></div><div><br clear="none"></div></div></div></blockquote></div></div></div></div><br><br></div> </div> </div> </div></div></body></html>