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Results tagged with iteration
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user 29431
Repeated execution of some groups of code statements.
2
votes
Running processing workflow in PyQGIS for every selected polygon separately in for loop
You need to select the related feature in every loop and change INPUT value in qgis:randompointsinsidepolygons as in the following script. Otherwise, in every loop the tool uses all features in select …
- 78k
26
votes
Iterating over map layers using PyQGIS
For QGIS 3, QgsMapLayerRegistry's functionality has been moved to QgsProject.
So, for iterating over map layers, you should use that structure:
layers = QgsProject.instance().mapLayers()
.mapLaye …
- 78k
6
votes
Iterate over features in a model
I don't know if it is possible using actual options in Modeler or Processing window, but you can make a script doing that.
from qgis.PyQt.QtCore import QCoreApplication
from qgis.core import (QgsProce …
- 78k
5
votes
Accepted
Shortest path (point to point) in iteration, safe for the case there is no route
Try something like that:
n=0
for f1 in layer1:
p1 = f1.geometry().asPoint()
x1, y1 = p1.x(), p1.y()
coord1= f"{x1},{y1}"
for f2 in layer2:
p2 = f2.geometry().asPoint()
…
- 78k
6
votes
Iterate through a list of polygons' centroids in QGIS
In your code, polycent is always set the last polygon's centroid. So you must add centroids to a list.
Change your code into that:
polycents = [] # empty list
for feature in layer.getFeatures():
…
- 78k
4
votes
Calculating final polygon after subtracting all intersecting polygons using shapely
Because t would be t coming from previous iteration, not from current iteration.
In case of len(new_df) > 1, first block of if statement processes. …
- 78k