#3419: v.to.db sinuous ------------------------------------+------------------------- 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 | ------------------------------------+------------------------- 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 -- Ticket URL: <https://trac.osgeo.org/grass/ticket/3419> GRASS GIS <https://grass.osgeo.org>
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