GISRSStudy » Geoprocessing


Geoprocessing is a framework and set of tools for processing geographic and related data. A GIS Geoprocessing Tools can improve your productivity because the tools apply edits in bulk, such as to all features or all selected features.

QGIS Union

Union in QGIS QGIS only allows two layers for using the Union Tool. The Union operation with a single input layer of three overlapping features. How Union works This algorithm checks overlaps between features within the Input layer and creates separate features for overlapping and non-overlapping parts. The area of overlap will create as many …

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QGIS Intersect

Intersection in QGIS Intersection operation between a two-features input layer and a single feature overlay layer. Extracts the portions of features from the input layer that overlap features in the overlay layer. Features in the intersection layer are assigned the attributes of the overlapping features from both the input and overlay layers. How Intersection works …

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QGIS Dissolve

Dissolve in QGIS QGIS Dissolve functions allow dissolving objects based on shared attribute. As a result, you receive a new layer with multi-part objects. How Dissolve works This algorithm takes a vector layer and combines their features into new features. One or more attributes can be specified to dissolve features belonging to the same class …

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Clip in QGIS Clip is a tool to cuts out a portion just like cookie cutter. Clips any OGR-supported vector layer by a polygon. This tool will use two shapefiles to select features and let you save the selection as a new shapefile. How Clip works This algorithm clips a vector layer using the features …

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Buffer Analysis in QGIS

Buffer in QGIS Buffering usually creates two areas: one area that is within a specified distance to selected real world features and the other area that is beyond. The area that is within the specified distance is called the buffer zone. In a GIS Application, buffer zones are always represented as vector polygons enclosing other …

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