Question Does the dissolve process time exponentially increase with the number of polygons being processed or is it linear?
Background Dear All I am using QGIS 2.14 64 on i7 laptop in particular I have been dissolving a polygon file of around 20,000 individual polygons. This using the standard menu Vector / Geoprocessing Tools / Dissolve and opting for dissolve all for the Dissolve field Works great - it has been taking around 36 hours for 20,000 polygons. Does the dissolve process time exponentially increase with the number of polygons being processed or is it linear? Its a great option but I could see that I might want to do the dissolve at a national level and I could see my computer being tied up for a few weeks! Thanks in advance Mark Edinburgh
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