Andrew McFadden maf.govt.nz> writes:
>
>
> Hi all
>
> The code of trying to write relates to selecting properties (given by x
> and y co-ordinates) spatially (distance "X" from "infected" properties
> identified by date) over a certain time period.
>
> i.e. what properties are within 3 km fro
Andrew,
You haven't defined the problem clearly, but I will try to guess what
you mean...
> i.e. what properties are within 3 km from properties infected on
> "2008-01-01" over the last 14 days.
I'm guessing that each row of your sample data represents one
infection event, and you want to find
Hi all
The code of trying to write relates to selecting properties (given by x
and y co-ordinates) spatially (distance "X" from "infected" properties
identified by date) over a certain time period.
i.e. what properties are within 3 km from properties infected on
"2008-01-01" over the last 14 day
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