Hello, Please forgive me if this is the wrong place for this question, but I am trying to use Alaska State Plane Zone 1 with ogr2ogr, and can't seem to get it to project the data correctly. I am probably doing something wrong, but can't seem to figure it out. I am pretty sure that my projection string is correct, as the results from proj match what the NGS's online calculator gives.
When I use ogr2ogr like this: ogr2ogr -t_srs "+proj=omerc +lat_0=57 +lonc=-133.6666666666667 +alpha=-36.86989764583333 +k=0.9999 +x_0=5000000 +y_0=-5000000 +no_uoff +datum=NAD83 +units=m +no_defs" akzone1.zhp point.84.shp On a shapefile with a single point - POINT (-131.811033901222117 55.409950489560302) I get: POINT (4988757.639998742379248 -5210867.590697132050991) What I get from a shape file reprojected with ESRI products is: POINT (936203.399999997578561 399658.200000001117587) I believe the ESRI result is correct, as it matches the the NGA online converter. Proj also generates the correct value: Jays-MacBook-Air-2:zone1 Jay$ proj +proj=omerc +lat_0=57 +lonc=-133.6666666666667 +alpha=-36.86989764583333 +k=0.9999 +x_0=5000000 +y_0=-5000000 +no_uoff +datum=NAD83 +units=m +no_defs -131.811033901222117 55.409950489560302 936203.40 399658.20 So, my question is what am I missing to make the results from ogr2ogr match up with proj? My thanks, -Jay Cable Jays-MacBook-Air-2:zone1 Jay$ proj Rel. 4.8.0, 6 March 2012 usage: proj [ -beEfiIlormsStTvVwW [args] ] [ +opts[=arg] ] [ files ] Jays-MacBook-Air-2:zone1 Jay$ ogr2ogr --version GDAL 1.11.0, released 2014/04/16 Oh, the online NGS converter I mentioned: http://www.ngs.noaa.gov/cgi-bin/spc_getpc.prl ======================================================= Latitude Longitude Datum Zone INPUT = N552435.8217 W1314839.7220 NAD83 5001 ======================================================= NORTH(Y) EAST(X) AREA CONVERGENCE SCALE METERS METERS DD MM SS.ss ----------- ----------- ---- ----------- ---------- 399658.198 936203.401 AK 1 1 32 38.22 0.99990159 - Jay Cable - [email protected] - (907)474-1856 - - Geographic Information Network of Alaska - University of Alaska -
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