I am trying to set up a new project in Grass, and I have a question
about the best approach.
I have different vector locations, and at each one there were multiple
samples taken. At the moment I have each sample as a row in a data
base.
My question is how best to put this data into a set of vector points.
I believe that I can do it in either of two ways (of not others).
1) I can create a vector point at each location, then I think that I
can have multiple cats for that object. So I think I can do cat=1,3,6
for a given location.
Will that work OK?
2) I can just create different vector objects, that happen to be at
the identical location, and have each one point to a different cat.
If the above is not clear, here is a bit more detailed example.
At location A there was a sample collected on 1/1 with a value of 2.1,
on 2/2 with a value of 2.2 and on 3/3 with a value of 3.3
The above data is already 3 rows in a database.
I want to be able to display data about point A (say, average value or
things like that). Should I just create a vector point A and then do
cat=1,2,3 or should I create 3 different vector points at A, each one
having a different cat?
Any guidance about the benefits or limitations each approach (or any
other approach to consider) would be greatly appreciated.
Thanks,
--Adam
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