# No subject

Tue May 5 08:38:44 EST 2009

```Map Projection,(UTM) Universal Transverse
Mercator,PolyCal,No,AutoCalOnly,No,BSBUseWPX,Yes

With proj4 I get the projection of those points in UTM

\$ proj +proj=utm +ellps=WGS84 coord
734345.05       4389843.39 (142,142)
741498.53       4390064.29 (5217,142)
741643.45       4385438.93 (5217,3422)
734485.67       4385218.08 (142,3422)

-0.269058 39.599662), obtener el punto x y en el mismo.
The goal is knowing a pair of coordinates in the map (for instance -0.269058
39.599662), get the x y pixel in the map.

\$ proj +proj=utm +ellps=WGS84
-0.269058 39.599662
734484.83       4386888.69

How can I calcultate the X Y pixel for those coordinates having all this
data? Am I in the right way

Thank you very much

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I have some .map OZI calibrated maps. From those .map, I can get some calib=
ration points (x y in the jpeg picture + lon lat in WGS84).<br><br>MMPXY,1,=
142,142<br>MMPXY,2,5217,142<br>MMPXY,3,5217,3422<br>MMPXY,4,142,3422<br>

MMPLL,1,=C2=A0 -0.269639,=C2=A0 39.626293<br>MMPLL,2,=C2=A0 -0.186306,=C2=
=A0 39.626293<br>MMPLL,3,=C2=A0 -0.186306,=C2=A0 39.584626<br>MMPLL,4,=C2=
=A0 -0.269639,=C2=A0 39.584626<br><br>With that I build a coordinates file<=
br><br>-0.269639=C2=A0 39.626293 (142,142)<br>

-0.186306=C2=A0 39.626293 (5217,142)<br>-0.186306=C2=A0 39.584626 (5217,342=
2)<br>-0.269639=C2=A0 39.584626 (142,3422)<br><br>From the .map file I can =
also know that the map projection is UTM<br><br>Map Projection,(UTM) Univer=
sal Transverse Mercator,PolyCal,No,AutoCalOnly,No,BSBUseWPX,Yes<br>

<br>With proj4 I get the projection of those points in UTM<br><br>\$ proj +p=
roj=3Dutm +ellps=3DWGS84 coord<br>734345.05=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0 4389843.39 (142,142)<br>741498.53=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0 4390064.29 (5217,142)<br>741643.45=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
4385438.93 (5217,3422)<br>

734485.67=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 4385218.08 (142,3422)<br><br>=
El objetivo es dadas unas coordenadas cualquieras dentro del mapa (p.e. -0.=
269058 39.599662), obtener el punto x y en el mismo.<br>The goal is knowing=
a pair of coordinates in the map (for instance -0.269058 39.599662), get t=
he x y pixel in the map.<br>

<br>\$ proj +proj=3Dutm +ellps=3DWGS84<br>-0.269058 39.599662<br>734484.83=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 4386888.69<br><br>How can I calcultate=
the X Y pixel for those coordinates having all this data? Am I in the righ=
t way<br><br>Thank you very much<br>

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