On 25 Nov 2015 1:39 AM, "Radim Blazek" <radim.bla...@gmail.com> wrote: > > On Mon, Nov 23, 2015 at 6:00 PM, Régis Haubourg > <regis.haubo...@eau-adour-garonne.fr> wrote: > > Hi, > > I'm having a classical use case here. Before starting a new plugin, and > > since it is a very common task in GIS, I would like to know if anyone has > > made something alike: > > > > - I have a postgis db with LINESTRINGM routes (watercourses already > > calibrated with measures). > > > > - I have a non geometric table registering events with start and end > > measures + identifier of my routes (watercours ID). > > > > - I create my event in the attribute table, with one ID and two manually > > typed measures, then a view cast it to spatial view using > > locate_beetween_measure function. > > > > I would like to create a form with two tools dedicated to "pick up" my route > > and the measure. i've done it in Arcview 3.2 once in the old past.. > > What could be the current better and simpler approach in QGIS? > > I think that now (>=2.8), when QGIS geometry supports M (measure), the > measure calculated for the nearest point on the identified line > could/should be added to derived attributes in standard identify > results.
And as of 2 days ago, it does: ;) https://github.com/qgis/QGIS/commit/1f0d24a0c7a6555ced117ecfc08a73afb1f31b46 Nyall > > > LRS plugin does not have that feature, and requires to recalibrate layers > > from scratch. > > Similarly Locate, Create events and Calculate measures tools in the > LRS plugin should be extended to support existing layers with > measure. > > Radim > > > Could we dream for the future of a new generic form widget with custom > > expressions to get attributes or geometric information from a layer (with > > snapping options )? > > > > Cheers > > > > Régis > > > > > > > > -- > > View this message in context: http://osgeo-org.1560.x6.nabble.com/Tool-to-pick-up-linear-referencing-measure-from-mouse-tp5238110.html > > Sent from the Quantum GIS - Developer mailing list archive at Nabble.com. > > _______________________________________________ > > Qgis-developer mailing list > > Qgis-developer@lists.osgeo.org > > List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer > > Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer > _______________________________________________ > Qgis-developer mailing list > Qgis-developer@lists.osgeo.org > List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer
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