<div class="gmail_quote">On Mon, Jan 25, 2010 at 8:38 PM, Frank Warmerdam <span dir="ltr"><<a href="mailto:warmerdam@pobox.com">warmerdam@pobox.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
I don't think the VRT approach supports actually adding<br>
different images together, only overlaying and rescaling.<br><br></blockquote><div><br>However, pixel functions could be used in a VRT file to accomplish the desired outcome.<br><br>--matt<br></div></div>