shpproj - Man Page

Reproject Shapefiles using PROJ

Synopsis

shpproj in_shp_file out_shp_file [-i=in_proj_file | -i="in_params" | -i=geographic] [-o=out_info_file | -o="out_params" | -o=geographic]

Options

in_shp_file

the name of an existing shapefile.

out_shp_file

the name of the new fixed shapefile that will be created.

-i

Input projection. Input can come from one of three sources. A projection parameter file, directly through parameters or geographic. If the shapefile has an associated prj file, name the same as the shapefile but ending in ".prj" it will be used by default ignoring all other parameters. If input is omitted it defaults to geographic, unless the default prj file exists.

-o

Output can come from one of three sources. A projection parameter file, directly through parameters or geographic. If output is omitted it defaults to geographic.

Projection Details

PROJECTION PARAMETER FILE

This file MUST end with the extension ".prj". It has the form of one projection parameter per line. Parameters can be in any order. The projection parameters are those used to define a PROJ projection.

PROJECTION PARAMETERS

Are the same as used by proj and invproj.

use: proj -lu to see available units proj -le to see available ellipsoid

Or visit the PROJ web page at http://www.remotesensing.org/proj for more details.

Example

The following example projects file rowtest to row3, moving data from Stateplane NAD83 zone 1002 to utm zone 16 in meters

shpproj rowtest row -i="init=nad83:1002 units=us-ft" -o="proj=utm zone=16 units=m"

shpproj rowtest row3 -o="proj=utm zone=18 units=m" -i="zone=16 proj=utm units=us-ft"

shpproj rowtest row3 -o="proj=utm zone=18 units=m"

This example uses a prj file and converts to geographic. note that -o=geographic can be ommitted.

shpproj rowtest row3 -i=myfile.prj -o=geographic

Author

shpproj is part of shapelib, maintained by Frank Warmerdam. This guide was created by Eduardo Patoo Kanegae and converted to manpage by Johan Van de Wauw.

See Also

proj(1), dbfadd(1), dbfcat(1), dbfcreate(1), dbfdump(1), dbfinfo(1), shpadd(1), shpcat(1), shpcentrd(1), shpcreate(1), shpdump(1), shpdxf(1), shpfix(1), shpinfo(1), shprewind(1), shptest(1)

Referenced By

dbfadd(1), dbfcat(1), dbfcreate(1), dbfdump(1), dbfinfo(1), Shape_PointInPoly(1), shpadd(1), shpcat(1), shpcentrd(1), shpcreate(1), shpdata(1), shpdump(1), shpdxf(1), shpfix(1), shpinfo(1), shprewind(1), shpsort(1), shptest(1), shptreedump(1), shpwkb(1).

January 2021 shapelib