https://github.com/enricofer/reffunctions
https://github.com/enricofer/reffunctions
Last synced: about 2 months ago
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- Host: GitHub
- URL: https://github.com/enricofer/reffunctions
- Owner: enricofer
- Created: 2014-09-23T15:40:00.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2020-09-14T08:50:32.000Z (over 4 years ago)
- Last Synced: 2025-03-01T23:01:49.145Z (3 months ago)
- Language: Python
- Size: 39.1 KB
- Stars: 6
- Watchers: 3
- Forks: 10
- Open Issues: 14
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Metadata Files:
- Readme: README.md
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README
#refFunctions v1.0#
the plugin, starting from upcoming QGIS release 3.16, will be replaced by newly available overlay functions: [https://github.com/qgis/QGIS/pull/38405](https://github.com/qgis/QGIS/pull/38405)
the QGIS plugin provide a 'Reference' group under field calculator with function for analytical or spatial reference to featurse in other layers.
Uninstalling plugin removes funtions from field calculator
##Table functions:
**dbvalue(targetLayer,targetField,keyField,conditionValue)**
Retrieve first targetField value from targetLayer when keyField is equal to conditionValue
**dbvaluebyid('targetLayer','targetField',featureID)**
Retrieve the targetField value from targetLayer using internal feature ID
**dbquery(targetLayer,targetField,whereClause)**
Retrieve first targetField value from targetLayer when whereClause is true
**dbsql(connectionName,sqlQuery)**
Retrieve results from SQL query
##WKT functions:
**WKTcentroid('WKTgeometry')**
Return the center of mass of the given geometry as WKT point geometry
**WKTpointonsurface('WKTgeometry')**
Return the point within the given geometry
**WKTlenght('WKTgeometry')**
Return the length of the given WKT geometry
**WKTarea('WKTgeometry')**
Return the area of the given WKT geometry
##Geometry functions:
**geomRedef('WKTgeometry')**
redefine the current feature geometry with a new WKT geometry (experimental!)
**geomnearest(targetLayer,targetField)**
Retrieve target field value from the nearest target feature in target layer
**geomdistance('targetLayer','targetField',distanceCheck)**
Retrieve target field value from target feature in target layer if target feature is in distance
**geomwithin(targetLayer,targetField)**
Retrieve target field value when source feature is within target feature in target layer
**geomtouches(targetLayer,targetField)**
Retrieve target field value when source feature touches target feature in target layer
**geomintersects(targetLayer,targetField)**
Retrieve target field value when source feature intersects target feature in target layer
**geomcontains(targetLayer,targetField)**
Retrieve target field value when source feature contains target feature in target layer
**geomcontains(targetLayer,targetField)**
Retrieve target field value when source feature is disjoint from target feature in target layer
**geomequals(targetLayer,targetField)**
Retrieve target field value when source feature is equal to target feature in target layer
**geomtouches(targetLayer,targetField)**
Retrieve target field value when source feature touches target feature in target layer
**geomoverlaps(targetLayer,targetField)**
Retrieve target field value when source feature overlaps target feature in target layer
**geomcrosses(targetLayer,targetField)**
Retrieve target field value when source feature crosses target feature in target layer