In QGIS I am trying to run a buffer on a polygon layer for 100 meters, it is based on a tutorial so it is supposed to work but it doesn't work. Someone in another forum suggested that I merge the polygons first but it actually didn't make a buffer at all after that.

I am using WGS84 UTM Zone 33S, the tutorial link is here http://docs.qgis.org/2.14/en/docs/training_manual/answers/answers.html#complete-analysis-2

closed as off-topic by Matthias Kuhn, whyzar, Midavalo Mar 9 '17 at 20:21

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I was just having a similar issue. My polygon was in NAD 83 UTM coordinates and I set my buffer distance up in meters and the resulting buffer was always blank. I think my issue was that the nodes on my polygon crossed. Check your nodes that you have clear uniform polygons without any nodes intersecting. Hope this helps.

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