[Qgis-developer] delete feature

[Martin Dobias]

On Fri, Dec 12, 2008 at 1:02 PM, piko <piklas at gmail.com> wrote:
>
> sprayerProvider = self.sprayerLayer.dataProvider()
> sprayerProvider.addAttributes( { "name" : "string" } )
>
> if self.sprayerLayer.featureCount() ==1:
>   sprayerProvider.deleteFeatures([0])
>   self.canvas.refresh()
>
> [...]
>
> So the feature is created and the layer added,
> but i want to delete and replace the feature each time the user click
> i guess my deleteFeatures doesn't work, because each click creates a new
> feature in the layer

You can't expect that feature id when inserting to an empty layer will
be zero. That's why deleteFeatures() isn't working for you.

Martin