NAME

       ogrlineref - Create linear reference and provide some calculations using it.

SYNOPSIS

          ogrlineref [--help] [--help-general] [-progress] [-quiet]
                     [-f <format_name>] [-dsco <NAME>=<VALUE>]... [-lco <NAME>=<VALUE>]...
                     [-create]
                     [-l <src_line_datasource_name>] [-ln <layer_name>] [-lf <field_name>]
                     [-p <src_repers_datasource_name>] [-pn <layer_name>] [-pm <pos_field_name>] [-pf <field_name>]
                     [-r <src_parts_datasource_name>] [-rn <layer_name>]
                     [-o <dst_datasource_name>] [-on <layer_name>] [-of <field_name>] [-s <step>]
                     [-get_pos] [-x <long>] [-y <lat>]
                     [-get_coord] [-m <position>]
                     [-get_subline] [-mb <position>] [-me <position>]

DESCRIPTION

       The ogrlineref program can be used to:

       • create a linear reference file from input data

       • return the "linear referenced" distance for the projection of the input coordinates (point) on the path

       • return the coordinates (point) on the path according to the "linear referenced" distance

       • return the portion of the path according to the "linear referenced" begin and end distances

       The  ogrlineref utility creates a linear reference - a file containing segments of a certain length (e.g.
       1 km in reference units.)  The  user  can  get  coordinates,  linear  referenced  distances  or  sublines
       (subpaths)  from  this  file.   The  utility does not require the M or Z components in the geometry.  The
       results can be stored in any OGR supported format.  Also some information is written to the stdout.

       --help Show this help message and exit

       --help-general
              Gives a brief usage message for the generic GDAL commandline options and exit.

       -progress
              Show progress.

       -quiet Suppress all messages except errors and results.

       -f <format_name>
              Select an output format name. The default is to create a shapefile.

       -dsco <NAME>=<VALUE>
              Dataset creation option (format specific)

       -lco <NAME>=<VALUE>
              Layer creation option (format specific).

       -create
              Create the linear reference file (linestring of parts).

       -l <src_line_datasource_name>
              The path to input linestring datasource (e.g. the road)

       -ln <layer_name>
              The layer name in datasource

       -lf <field_name>
              The field name of unique values to separate the input lines (e.g.  the set of roads).

       -p <src_repers_datasource_name>
              The path to linear references points (e.g. the road mile-stones)

       -pn <layer_name>
              The layer name in datasource

       -pm <pos_field_name>
              The field name of distances along path (e.g. mile-stones values)

       -pf <field_name>
              The field name of unique values to map input reference points to lines.

       -r <src_parts_datasource_name>
              The path to linear reference file.

       -rn <layer_name>
              The layer name in datasource

       -o <dst_datasource_name>
              The path to output linear reference file (linestring datasource)

       -on <layer_name>
              The layer name in datasource

       -of <field_name>
              The field name for storing the unique values of input lines

       -s <step>
              The part size in linear units

       -get_pos
              Return linear referenced position for input X, Y

       -x <long>
              Input X coordinate

       -y <lat>
              Input Y coordinate

       -get_coord
              Return point on path for input linear distance

       -m <position>
              The input linear distance

       -get_subline
              Return the portion of the input path from and to input linear positions.

       -mb <position>
              The input begin linear distance

       -me <position>
              The input end linear distance

EXAMPLE

       This example would create a shapefile (parts.shp) containing a data needed for linear referencing  (1  km
       parts):

          ogrlineref -create -l roads.shp -p references.shp -pm dist -o parts.shp -s 1000 -progress

AUTHOR

       Dmitry Baryshnikov <polimax@mail.ru>

COPYRIGHT

       1998-2025

                                                  Apr 01, 2025                                     OGRLINEREF(1)