Hi,
New plugin for attribute aggregation (alpha version).
Use case : aggregate a feature attribute of a source layer (ex. union
geometry, compute average geometry length, sum geometry area, sum
population, compute average age...) onto features of a target layer (ex
a country layer) based on a geometry predicate (ex. for cities within
each state, for roads intersecting each state...).
The alpha version of the plugin is available at
http://geo.michaelm.free.fr/OpenJUMP/resources/aggregation-0.1.jar
It is installed in a PlugIn menu
@Stefan : such a plugin already exists in tools>analysis>two layers, but
with limited capabilities. Hope this one will be able to replace the
other one (at the moment, mine misses minority, majority and median
function). Another plugin exists from Martin Davis in tools menu which
computes a kind of cartesian product between 2 layers (but if a country
contains 3 cities, there is 3 features in the result layer wich combine
attributes of both layers - so no aggregation)
Michaël
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