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<TITLE>reprojection issue, using grass6.2</TITLE>
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<P><FONT FACE="Arial">Hi,</FONT>
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<P><FONT FACE="Arial">I have three locations defined, one in Geographic 'projection', one UTM and the other described below. When I try to reproject data, e.g. a vector rectangle from either Geographic or UTM to the Oblique Mercator projection defined below, the rectangle isn't rotated as I expect. The origin of the projected coordinates looks to be in the correct location but there is no rotation applied (geographic north is supposed to ~45 deg from the y axis). BTW, is it even possible to display a geodetic grid for a non-rectified projection?</FONT></P>
<P><FONT FACE="Arial">output from g.proj -p:</FONT>
<BR><FONT FACE="Arial">-PROJ_INFO-------------------------------------------------</FONT>
<BR><FONT FACE="Arial">name : Oblique Mercator</FONT>
<BR><FONT FACE="Arial">proj : omerc</FONT>
<BR><FONT FACE="Arial">a : 6378137</FONT>
<BR><FONT FACE="Arial">es : 0.006694379990141316</FONT>
<BR><FONT FACE="Arial">lat_0 : 53.25</FONT>
<BR><FONT FACE="Arial">lonc : -5.7</FONT>
<BR><FONT FACE="Arial">alpha : -88</FONT>
<BR><FONT FACE="Arial">k : 1</FONT>
<BR><FONT FACE="Arial">x_0 : 0</FONT>
<BR><FONT FACE="Arial">y_0 : 0</FONT>
<BR><FONT FACE="Arial">towgs84 : 0,0,0,0,0,0,0</FONT>
<BR><FONT FACE="Arial">no_defs : defined</FONT>
<BR><FONT FACE="Arial">-PROJ_UNITS------------------------------------------------</FONT>
<BR><FONT FACE="Arial">unit : meter</FONT>
<BR><FONT FACE="Arial">units : meters</FONT>
<BR><FONT FACE="Arial">meters : 1</FONT>
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<P><FONT FACE="Arial">The command I used to specify the oblique projection is:</FONT>
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<P><B><FONT FACE="Arial">proj +proj=omerc +ellps=WGS84 +k_0=1.0 +lat_0=53.25 +no_uoff +rot_conv +alpha=-88 +lonc=-5.7</FONT></B>
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<P><FONT FACE="Arial">I must emphasize that I have checked the proj.4 parameters using the command-line proj.4 and the *</FONT><B><FONT FACE="Arial">parameters are correct*.</FONT></B><FONT FACE="Arial"> I applied these parameters in GlobalMapper to get the final map to the state that I would like eventually in GRASS.</FONT></P>
<P><FONT FACE="Arial">Any advice would be *greatly* appreciated, I have spent a lot of time on this.</FONT>
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<P><FONT FACE="Arial">Regards,</FONT>
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<P><FONT FACE="Arial">Garret</FONT><B><I></I></B>
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