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<DIV><SPAN class=576290020-12052005><FONT face=Arial size=2>Does anyone out
there have any experience encoding geotiffs that are referenced with a standard
transformation method (e.g., Lambert Conformal, Polar Stereographic, Mercator)
on a user-defined projection? For example, I can create an image where I
know:</FONT></SPAN></DIV>
<DIV><SPAN class=576290020-12052005><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=576290020-12052005><FONT face=Arial size=2>1. Projection
is Lambert Conformal </FONT></SPAN></DIV>
<DIV><SPAN class=576290020-12052005><FONT face=Arial size=2>2. I know both
standard parallels in degrees</FONT></SPAN></DIV>
<DIV><SPAN class=576290020-12052005><FONT face=Arial size=2>3. I know the
standard longitude in degrees</FONT></SPAN></DIV>
<DIV><SPAN class=576290020-12052005><FONT face=Arial size=2>4. I know the
spacing of the pixels along either of the standard latitudes in
meters</FONT></SPAN></DIV>
<DIV><SPAN class=576290020-12052005><FONT face=Arial size=2>5. I can
compute the lat/lon of any raster pixel in the image to use as a tie
points. Since I know items 1-4, I really should only need 1 tie point, but
I can compute any of the lat/lons with routines I already have.
</FONT></SPAN></DIV>
<DIV><SPAN class=576290020-12052005><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=576290020-12052005><FONT face=Arial size=2>What I specifically
don't understand how to use for this case is the ModelTiePointTag and the
PixelScaleTag. It seems as if the tie points always need to be specified
in some sort of distance unit, which I don't know and cannot readily
compute. So, is there anyway to encode the information such that the tie
points are specified in lat/lon, but still use a Projected CS with the other
parameters specified? </FONT></SPAN></DIV>
<DIV><SPAN class=576290020-12052005><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=576290020-12052005><FONT face=Arial size=2>Thanks for any help
anyone can provide.</FONT></SPAN></DIV>
<DIV><SPAN class=576290020-12052005><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=576290020-12052005><FONT face=Arial
size=2>Regards,</FONT></SPAN></DIV>
<DIV><SPAN class=576290020-12052005><FONT face=Arial
size=2>Brent</FONT></SPAN></DIV></BODY></HTML>