[mapserver-users] Projection object parameters for UTM to lat-long

[Pietro Giannini]

Bob,
maybe error is in first line: "ellps-GRS80" is wrong, "ellps=GRS80" is 
correct.
bye
................pg

Bistrais, Bob ha scritto:
>
> I am trying to project an object from UTM to lat-long.  I cannot get 
> the projection to work, and I suspect it's the parameters for the UTM 
> projection object.  I am trying to project from UTM Zone 19N, NAD 1983 
> to lat-long.  Here is my code:
>
> $projInObj = 
> ms_newprojectionobj("proj=utm,ellps-GRS80,datum=NAD83,zone=19,units=m,north,no_defs"); 
>
> $projOutObj = ms_newprojectionobj("proj=latlong");
> $poPoint = ms_newpointobj();
> $poPoint->setXY($xmin, $ymin);
> echo "<p/>Coords: " . $poPoint->x . ",".$poPoint->y;
> $poPoint = $poPoint->project($projInObj, $projOutObj);
> echo "<p/>x = " . $poPoint->x;
> echo "<p/>y = " . $poPoint->y;
> $poPoint->free();
>
> I can see the output using the echo lines.  The coordinates going into 
> the point show up and are correct, but there are no x/y values after 
> doing the project.  Can anyone see what I'm doing wrong?
>
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>
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-- 
Pietro Giannini
Bytewise srl - Area GIS
41°50'38.58"N 12°29'13.39"E

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