v.lrs.segment - Creates points/segments from input lines, linear reference system and positions read

       Radim Blazek

v.lrs.segment  creates  points/segments from input lines, linear reference system and positions read from
       standard in or a file.

       The format is as follows:
       P <point_id> <line_id> <milepost>+<offset> [<side offset>]
       L <segment_id> <line_id> <milepost>+<offset> <milepost>+<offset> [<side offset>]

       This example is written for the Spearfish dataset (it continues the example from v.lrs.create).

       In this example, the ’route_lrs’ shall be extended for a new position (point) along  the  LRS  after  bus
       stop 4:
       # new point on LRS
       echo "P 7 22 4+180" | v.lrs.segment route_lrs out=route_lrs_new rstable=route_lrs
       g.region vector=route_lrs n=n+100 s=s-100 -p
       d.erase
       # existing LRS
       d.vect route_lrs
       d.vect busstops disp=attr attr=cat size=10 bg=white lcol=blue yref=bottom
       d.vect busstops icon=basic/circle fcol=blue
       db.select table=route_lrs
       # show modified map
       d.vect route_lrs_new col=red

       vector, linear reference system, network

v.lrs.segment   -  Creates  points/segments  from input lines, linear reference system and positions read
       from stdin or a file.

       For more information and examples see the help page for v.lrs.segment’s sister module, v.segment.

v.lrs.create,v.lrs.where,v.lrs.label,v.segmentLRStutorial,IntroducingtheLinearReferenceSysteminGRASS

       Available at: v.lrs.segment source code (history)

       Accessed: Friday Apr 04 01:20:23 2025

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       © 2003-2025 GRASS Development Team, GRASS GIS 8.4.1 Reference Manual

GRASS 8.4.1                                                                                v.lrs.segment(1grass)

v.lrs.segmentv.lrs.segment--helpv.lrs.segmentinput=nameoutput=name    [llayer=string]     [rsdriver=string]     [rsdatabase=string]
       rstable=string  [file=name]   [--overwrite]  [--help]  [--verbose]  [--quiet]  [--ui]

   Flags:--overwrite
           Allow output files to overwrite existing files

       --help
           Print usage summary

       --verbose
           Verbose module output

       --quiet
           Quiet module output

       --ui
           Force launching GUI dialog

   Parameters:input=name[required]
           Name of input vector map
           Input vector map containing lines

       output=name[required]
           Output vector map where segments will be written

       llayer=string
           Layer number or name
           Line layer
           Default: 1rsdriver=string
           Driver name for reference system table
           Options: dbf,mysql,odbc,ogr,pg,sqlite
           Default: sqlitersdatabase=string
           Database name for reference system table
           Default: $GISDBASE/$LOCATION_NAME/$MAPSET/sqlite/sqlite.dbrstable=string[required]
           Name of the reference system table

       file=name
           Name of file containing segment rules. If not given, read from stdin.

       Figure out how to merge result into existing LRS map and table.