ogrlineref(1)

NAME
ogrlineref - The utility can be used for:

•   create 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

SYNOPSIS

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

--help-general:
    Show the usage.

-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).

-lsrc_line_datasource_name:
    The path to input linestring datasource (e.g. the road)

-lnlayer_name:
    The layer name in datasource

-lffield_name:
    The field name of unique values to separate the input lines (e.g. the set of roads)

-psrc_repers_datasource_name:
    The path to linear references points (e.g. the road mile-stones)

-pnlayer_name:
    The layer name in datasource

-pmpos_field_name:
    The field name of distances along path (e.g. mile-stones values)

-pffield_name:
    The field name of unique values to map input reference points to lines

-rsrc_parts_datasource_name:
    The path to linear reference file

-rnlayer_name:
    The layer name in datasource

-odst_datasource_name:
    The path to output linear reference file (linestring datasource)

-onlayer_name:
    The layer name in datasource

-offield_name:
    The field name for storing the unique values of input lines

-sstep:
    The part size in linear units

-get_pos:
    Return linear referenced position for input X, Y

-xlong:
    Input X coordinate

-ylat:
    Input Y coordinate

-get_coord:
    Return point on path for input linear distance

-mposition:
    The input linear distance

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

-mbposition:
    The input begin linear distance

-meposition:
    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

AUTHORS

Dmitry Baryshnikov polimax@mail.ru