OGR_LAYER_ALGEBRA(1) GDAL OGR_LAYER_ALGEBRA(1) (NAME) ogr_layer_algebra - . . (SYNOPSIS) ogr_layer_algebra [--help] [--help-general] Union|Intersection|SymDifference|Identity|Update|Clip|Erase -input_ds [-input_lyr ] -method_ds [-method_lyr ] -output_ds [-output_lyr ] [-overwrite] [-opt =]... [-f ] [-dsco =]... [-lco =]... [-input_fields {NONE|ALL|,,...}] [-method_fields {NONE|ALL|,,...}] [-nlt ] [-a_srs ] (DESCRIPTION) ogr_layer_algebra . . : ogr_layer_algebra GDAL . : "gdal": : gdal vector layer-algebra. --help --help-general GDAL . : o Union (features) . o Intersection . o SymDifference . o Identity (Identity) . (attributes) . o Update . . o Clip . . o Erase . . -input_ds . . -input_lyr input_ds (). -method_ds . (: clip erase update). (: Union Intersection SymDifference). -method_lyr method_ds (). -output_ds ogr_layer_algebra. -output_lyr_name (). -overwrite output_ds ogr_layer_algebra . -opt = input_ds method_ds . -f . ( ESRI Shapefile ). . -dsco = ( ). -lco = ( ). -input_fields {NONE|ALL|,,...} . -method_fields {NONE|ALL|,,...} . -nlt (geometry) . : NONE GEOMETRY POINT LINESTRING POLYGON GEOMETRYCOLLECTION MULTIPOINT MULTIPOLYGON GEOMETRY25D POINT25D LINESTRING25D POLYGON25D GEOMETRYCOLLECTION25D MULTIPOINT25D MULTIPOLYGON25D. -a_srs SRS (reprojecting). OGRSpatialReference.SetFromUserInput() (Compound) EPSG ( EPSG:4296) (WKT) CRS PROJ.4 .prj WKT CRS. (EXIT STATUS) ( ). (COPYRIGHT) 1998-2026 August 18, 2026 OGR_LAYER_ALGEBRA(1)