I have a very good idea of what I would like to do but I really do not know if it is possible with QGIS. I have points that each one corresponds to a group size and I would like to use GIS to sort this data. In fact, in order to conserve independence between my group sizes I would like to keep only one group size per day. Thus, is QGIS capable of analysing all my points and telling me how many duplicates I have within 100 meters radius for the same day? Then, if the software finds more than one point per day, can I run an application that will only keep one group size (randomly). I do not know if I am being very clear but I hope you understand my problem.
Date Day Month Year Week no Season Time EASTING NORTHING DATUM Groupsize
14/03/2006 14 March 2006 11 WINTER 09:20 599707 5733317 NAD83 1
02/04/2002 2 April 2002 14 SPRING 14:34 602500 5732500 NAD83 500
05/02/2002 5 February 2002 6 WINTER 09:00 600359 5734295 NAD83 250
06/02/2002 6 February 2002 6 WINTER 08:30 599000 5733600 NAD83 600
07/02/2002 7 February 2002 6 WINTER 18:00 599200 5733400 NAD83 650
11/02/2002 11 February 2002 7 WINTER 14:30 599850 5734150 NAD83 565
12/02/2002 12 February 2002 7 WINTER 17:10 599661 5733382 NAD83 29
13/02/2002 13 February 2002 7 WINTER 09:00 599800 5734200 NAD83 650
16/02/2002 16 February 2002 7 WINTER 10:30 599010 5733850 NAD83 100
16/02/2002 16 February 2002 7 WINTER 10:30 601034 5734740 NAD83 150
16/02/2002 16 February 2002 7 WINTER 10:30 600463 5734418 NAD83 75
16/02/2002 16 February 2002 7 WINTER 10:30 600628 5734783 NAD83 150
16/02/2002 16 February 2002 7 WINTER 10:30 600147 5734358 NAD83 100
20/02/2002 20 February 2002 8 WINTER 12:00 602500 5734200 NAD83 325
26/02/2002 26 February 2002 9 WINTER 18:05 599661 5733382 NAD83 155
Thank you,