ogrlineref - Man Page
Create linear reference and provide some calculations using it.
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 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
The ogrlineref creates 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).
- -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
1998-2023