"Fossies" - the Fresh Open Source Software Archive  

Source code changes of the file "docs/user/unsupported/process/process-feature.rst" between
geotools-24.0-project.zip and geotools-24.1-project.zip

About: GeoTools (The Open Source Java GIS Toolkit) is a Java code library which provides standards compliant methods for the manipulation of geospatial data.

process-feature.rst  (geotools-24.0-project):process-feature.rst  (geotools-24.1-project)
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* Generate additional attributes using the form: ``area=area( the_geom )``:: * Generate additional attributes using the form: ``area=area( the_geom )``::
INPUT Schema DEFINITION OUTPUT Schema INPUT Schema DEFINITION OUTPUT Schema
the_geom: Polygon the_geom=centriod(the_geom) the_geom: Point the_geom: Polygon the_geom=centriod(the_geom) the_geom: Point
name: String name name: String name: String name name: String
id: Long id id: Long id: Long id id: Long
description: String description description: String description: String description description: String
area=area( the_geom) area: Double area=area( the_geom) area: Double
text=concatenate(name,'-',id) text: String text=concatenate(name,'-',id) text: String
Group candidate selection
^^^^^^^^^^^^^^^^^^^^^^^^^
Filters a FeatureCollection according to the aggregate operation chosen (MIN or
MAX) and the groups defined through attribute names. Given a feature collection,
groups according to the defined grouping attributes, and returns the feature ha
ving the MIN or MAX value for the chosen attribute. One feature will be chosen f
or each group.
This vector process accepts four parameters:
* ``data``: the data on which perform the computation.
* ``aggregation``: the type of operation required to filter data (MIN or MAX).
* ``operationAttribute``: the xpath to the attribute whose value will be used to
perform the MIN or MAX operation.
* ``groupingAttributes``: a lists of xpath pointing to the attirbutes defining t
he features' groups for which perform the filtering process.
The process ensures a consistent results only if the FeatureCollection has alrea
dy been sorted by the feature's attributes passed as the ``groupingAttributes``
parameter.
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