[GRASS-dev] [GRASS GIS] #3419: v.to.db sinuous

[GRASS GIS]

#3419: v.to.db sinuous
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 Reporter:  jradinger               |      Owner:  grass-dev@…
     Type:  defect                  |     Status:  new
 Priority:  normal                  |  Milestone:
Component:  Vector                  |    Version:  7.2.2
 Keywords:  v.to.db, shape metrics  |        CPU:  All
 Platform:  All                     |
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 The option of v.to.db to calculate sinuosity (sinuous) seems to be
 calculated based on features (i.e. feature ids) rather than on cats (e.g.
 as length is calculated). Thus, only reasonable results are calculated if
 a cat consists of only one feature. For connected lines that consist of
 more than one feature (lines) it is unclear how the sinuosity index is
 calculated (based on last processed feature? average over all sub-lines).
 For connected lines that share one cat the sinuosity should probably be
 calculated based on a polyline of these lines sharing a common cat.

 This might be also related to https://trac.osgeo.org/grass/ticket/3102

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3419>
GRASS GIS <https://grass.osgeo.org>