On Fri, 29 Jun 2018 at 17:35, Frank Broniewski
<[email protected]> wrote:
> def processAlgorithm(self, parameters, context, feedback):
> # qgis:pointsalonglines
> params = {
> 'INPUT': parameters[self.INPUT],
> 'DISTANCE': parameters[self.DISTANCE],
> 'START_OFFSET': 0,
> 'END_OFFSET': 0,
> 'OUTPUT': 'memory:'
> }
> points = processing.run(
> 'qgis:pointsalonglines',
> params, context=context, feedback=feedback
> )['OUTPUT']
>
> return {self.OUTPUT: points}
>
Try:
def processAlgorithm(self, parameters, context, feedback):
# qgis:pointsalonglines
params = {
'INPUT': parameters[self.INPUT],
'DISTANCE': parameters[self.DISTANCE],
'START_OFFSET': 0,
'END_OFFSET': 0,
'OUTPUT': 'memory:'
}
points = processing.run(
'qgis:pointsalonglines',
params, context=context, feedback=feedback
)['OUTPUT']
# store result layer in context - this prevents it being
deleted and cleaned up
# when processAlgorithm finishes
context.temporaryLayerStore().addMapLayer(points)
# return the layer ID in the results dictionary - processing
will automatically retrieve the corresponding
# layer from the context when required
return {self.OUTPUT: points.id()}
Nyall
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