Hot answers tagged transformation
self.coordTransform = self.coordinateTransformation(4326,3309) It looks like you have your source and destination coordinate systems mixed up.
Maybe you should re-save again your data (right click on the layer,save as).. this time make sure you change the crs which has distance unit (e.g wgs 84 world mercator - meter units). This new layer should have new distance unit. You can check again whether you already use the right crs through metadata (you can also use qgis browser)
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