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spatial
2008 Sep 23
0
additional parameters in function called by tapply
...logy I wasn't able to find it.
I have the following problem in aggregating results of a model calculation:
The results are yearly values of several parameters with several hierarchical spatial factors taken from a database as a data frame with the following structure
value | year | spatial1 | spatial2 | spatial3 | parameter
the values are given for spatial1 units, i.e. the com
spatial3 contains one or many spatial2 units, spatial2 contains one or many spatial1 units.
The normal aggregation goes in a two step way:
a) summation of the parameter values of the same spatial differentiaton (e.g. sums...