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Draw around polygons' borders

Question asked by scottaidh on Feb 17, 2012
Latest reply on Feb 17, 2012 by scottaidh

Is there a quick way or tool to closely trace around or draw a line around multiple polygons?

I've attached 2 files of Kelvingrove Park in Glasgow to illustrate what I mean.  No.1 shows all the polygons that make up the park.

No.2 shows the same park as 1 polygon (a re-draw) i.e. what I'd like to do easily.

I've tried many things (merges, envelopes etc.) and in the end had to create a new polygon by drawing round the original, however, I have
a few thousand like this and wondered if there was a quicker way to do it.

Any hints or help would be appreciated.