Author: David Pairman

Published under GNU GPLv3

extend-dangles is a Python package to provide a GRASS Addon command v.extendline

v.extendline is used to extend dangles in a vector map to meet either the another line in the map or another dangle extension, whichever comes first.

Two options control the lenght that the line (dangle) can be extended, being the lesser of:

maxlen - Max length in map units that line can be extended (def=200)

scale - Maximum length of extension as proportion of original line, disabled if 0 (def=0.5)

v.extendline --help provides more information on the command syntax

See also: ArcMap Extend Line

Install from a GRASS command line using

g.extension extension=v.extendline url=https://github.com/manaakiwhenua/extend-dangles

This software is used in Manaaki Whenua's paddock boundary segmentation work.

Citation:

North, H.; Pairman, D.; Belliss, S. (2019) Boundary Delineation of Agricultural Fields in Multitemporal Satellite Imagery, in IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, vol. 12, no. 1, pp. 237-251, https://doi.org/10.1109/JSTARS.2018.2884513.

Copyright: (C) 2015 Landcare Research New Zealand Ltd

This program is free software under the GNU General Public License (version 3). Read the file COPYING that comes with GRASS for details.