I want to retrieve the nearest line to a point with the GRASS function v.distance(). But I think I do not fully understand how to use this function. What I have are two layers (in the same CRS -> EPSG:31255): one point-layer which contains the locations of all my sensors and one line-layer which contains a streetnet. The following picture shows both my layers:
With v.distance, I want to retrieve the nearest line (street) for each point (sensor). Furthermore, I want to update my point-attribut "edgeid" with the id of the nearest line.
EVIS_Stat_Sensorik_.. is my point-layer and Reprojiziert is my line-layer. For the upload string I used the "to_attr"-String because the relation between the pointlayer and the linelayer should not be based on the distance, but on the id of the nearest edge. So that the edgeid-attribut will get updated by the function and not some other attributs of the pointlayer. For the "Column name where values specified by upload option.." I chose edgeid because the edgeid should get updated. For the "Column name of neariest feature.." I chose id, because the attribut edgeid of the pointlayer should be updated WITH the id of the nearest line of the line layer.
But the problem is, if I run the algorithm, the output is a NEW pointlayer which is identical with the given input pointlayer EVIS_Stat_Sensorik_.. and the edgeid-attribut of BOTH the input and output pointlayer is still empty. So I do not understand where I can see the results of the algorithm.
In the following picture you can se the attributtable of my output-linelayer named "Nearest":
I have looked through a lot threads and the duplicate questions do not help me either (How to estimate distance from points to line feature with v.distance? , Nearest distance between point and line layers in QGIS, Finding nearest line to point in QGIS ). Any suggestions?
