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>
Aan: 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
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Terglobo
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5223 CT 's-Hertogenbosch
06-25314983
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