Thanks everybody. I am illiterate when it comes to scripting. So that is not really an option for me.
To inform you all, Last night, I came with a solution that I want to share with you: My layers are shape files. what I did: 1) With the plugin “Pointconnector”, I created the lines layer(after a but of hustle: creating a cvs with from-to lines) then I used the field calculator to measure the length I used the “length” property to label the distance lines layer. thanks for your input and ideas Joris > Op 10-mrt.-2015, om 10:32 heeft Alexandre Neto <senhor.n...@gmail.com> het > volgende geschreven: > > If your data is in a Spatialite or a Postgis database, it's quite easy to > achieve what you seek. > > All you need to do is create a SQL query similar to this one in DB Manager: > > SELECT > a.gid as dep_id, > b.gid as dest_id, > ST_Distance(a.geom, b.geom) as distance, > ST_MakeLine(a.geom, b.geom) as geom > FROM > my_table as a, my_table as b > WHERE > a.gid > b.gid > > Note: This is the postgis version, not sure if the same function applies to > spatialite > > Add it to the map canvas by using dep_id as unique value column and geom as > geometry column. > > Hope it helps. > > Alexandre Neto > > On Tue, Mar 10, 2015 at 8:08 AM, Raymond Nijssen <r.nijs...@terglobo.nl > <mailto:r.nijs...@terglobo.nl>> wrote: > Hi Joris, > > I dont know about that plugin, but i would write a little script for that > like this: > > # get active (point) layer as input > inputlayer = iface.activeLayer() > # create new memory layer for output > outputlayer = QgsVectorLayer("Linestring", "distance_lines", "memory") > outputprovider = outputlayer.dataProvider() > # loop all points > iter = inputlayer.getFeatures() > for feature in iter: > p1 = feature.geometry().asPoint() > iter2 = layer.getFeatures() > for feature2 in iter2: > p2 = feature2.geometry().asPoint() > if not p1 == p2: > # create new line > l = QgsGeometry.fromPolyline([p1,p2]) > feat = QgsFeature() > feat.setGeometry(l) > outputprovider.addFeatures([feat]) > outputlayer.commitChanges() > outputlayer.updateExtents() > # add to map > QgsMapLayerRegistry.instance().addMapLayer(outputlayer) > > Good luck, > > Raymond > > > > On 09-03-15 18:18, Joris Hintjens wrote: > Thanks Raymond, but what I need is the distance from every point in a layer > to every other point. That is what “distance matrix” gives me. > Then, I want to plot every distance line (as a seperate layer?) on the map. > > Joris > > Begin doorgestuurd bericht: > > Datum: 9 maart 2015 15:53:56 CET > Van: Raymond Nijssen <r.nijs...@terglobo.nl <mailto:r.nijs...@terglobo.nl>> > Aan: qgis-user@lists.osgeo.org <mailto:qgis-user@lists.osgeo.org> > Onderwerp: Antw.: [Qgis-user] Visualize Distance matrix > > Hi Joris, > > Not sure if I understand your question, but if you want to do a distance > calculation for all points in a point layer to a certain location you can use > the field calculator in the attribute table window. > > The expression should be: > > distance($geometry ,geomFromWKT( 'POINT(0 0)' )) > > to calculate all distances to coordinate 0,0. > > Hope this helps you. > > Raymond > > > > On 09-03-15 15:13, Joris Hintjens wrote: > I feel stupid: I am stuck with what seems a basic operation.. > I have a points layer, of which I want to visualize the distance matrix. > I can create the martini CSV. > I cannot create a distance hub layer with the MMQGIS plugin with From and To > point from within the same layer. > > Any help on how I ca get this result on my map? > > PoinA——————>PointB > xxx Meter > > and this for the entire matrix > > > thanks > Joris > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org <mailto:Qgis-user@lists.osgeo.org> > http://lists.osgeo.org/mailman/listinfo/qgis-user > <http://lists.osgeo.org/mailman/listinfo/qgis-user> > > > -- > Terglobo > Ampèrestraat 110 > 5223 CT 's-Hertogenbosch > 06-25314983 > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org <mailto:Qgis-user@lists.osgeo.org> > http://lists.osgeo.org/mailman/listinfo/qgis-user > <http://lists.osgeo.org/mailman/listinfo/qgis-user> > > > > > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org <mailto:Qgis-user@lists.osgeo.org> > http://lists.osgeo.org/mailman/listinfo/qgis-user > <http://lists.osgeo.org/mailman/listinfo/qgis-user> > > > -- > Terglobo > Ampèrestraat 110 > 5223 CT 's-Hertogenbosch > 06-25314983 > > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org <mailto:Qgis-user@lists.osgeo.org> > http://lists.osgeo.org/mailman/listinfo/qgis-user > <http://lists.osgeo.org/mailman/listinfo/qgis-user> > > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-user
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