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Topic: Create square polygons based on points in ArcMap for NBN data

Hi all,

Due to NBN data being point data, I want to be able to create polygons that show the extent of area the point relates to due to the inaccurately/confidentially recorded data.

If an Adder record is a 6 figure grid reference (SU123456) it is obviously only accurate to 100m.  I would like to be able to create a 100km square polygon within ArcMap which originates at the point location and extends 100m north and 100m east.

Likewise I'd like to be ble to do the same for 4 figure grid refs, 8 figure grid refs etc etc etc.

Can anybody help?

Many thanks,

Ben

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Re: Create square polygons based on points in ArcMap for NBN data

Just seen this. See http://naturedata.blogspot.co.uk/2012/0 … ences.html and read http://forum.lrcs.org.uk/viewtopic.php?id=473 for a couple of options depending on whether you have arcinfo or will need to use some free software as well.

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Teresa Frost | Wetland Bird Survey National Organiser | BTO
Other hat  | National Forum for Biological Recording Council
(Old hats  | NBN Board, ALERC Board, CBDC, KMBRC)