Hi Marco,<br><br>Thanks for your very prompt reply. I just tried that but no luck alas. It seems to me like this is being treated as a 2D raster with no elevation data but I guess I don't really know enough about formats and such yet. This is only a personal project, with no real urgency about it so I'll just keep plugging away and hope I figure it out.<br>
<br>Simon.<br><br><div class="gmail_quote">On Mon, Jun 9, 2008 at 9:36 AM, <<a href="mailto:marco.pasetti@alice.it">marco.pasetti@alice.it</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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<div dir="ltr"><font color="#000000" face="Arial" size="2">Hi Simon,</font></div>
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<div dir="ltr"><font face="Arial" size="2">did you set the z-exag parameter?</font></div>
<div dir="ltr"><font face="Arial" size="2">Since lat/long data are in decimal degrees while elevation is in meters, you must set the correct value for the z-exag parameter.</font></div>
<div dir="ltr"><font face="Arial" size="2">The transformation from decimal degrees to meters is not univocal, because it depends on the geographic zone you're working on, but we can assume a generic (mean)transformation value and set the z-exag as follows:</font></div>
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<div dir="ltr"><font face="Arial" size="2">in the z-exag field type 8.9606e-6 and then enter</font></div>
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<div dir="ltr"><font face="Arial" size="2">I hope this helps,</font></div>
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<div dir="ltr"><font face="Arial" size="2">Marco</font></div></div></div></blockquote></div><br>