Exercise – 14 / Select by Location in QGIS తెలుగులో నేర్చుకుందాం

Exercise – 14 / Select by Location in QGIS

Select by Location

Spatial queries are core to many types of GIS analysis. Spatial queries allow you to select features in a layer by their spatial relationships (intersect, contain, touch etc.) with features from another layer.

The criteria for selecting features is based on the spatial relationship between each feature and the features in an additional layer.

Add Polygon/Line/Point Layer to Layers panel

Figure 153 - QGIS canvas with Line, point & polygon layers loaded

Choose Vector → Research tools → Select by Location
Select features from (Line / Point / Polygon) for selection
Choose the relationship with other features from other layer with intersect, contain, touch, with in etc.
Select comparing feature.
Select options from modify current select by

create new selection
add to current selection
selecting within current selection
removing from current selection

Click on Runand close select by location window to see the selection of point which are with in polygons.

Note: Process of Select by Location for Line & Polygon remains the same.

Figure 154 - Select by location window

Figure 155 - Points which are within polygon layers are selected

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