"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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