Exercise – 9 / How to use Join & Spatial Join functions in QGIS తెలుగులో నేర్చుకుందాం

Exercise – 9 / How to use Join & Spatial Join functions in QGIS

Join Attributes by Location (Spatial Join)

Join Attributes by Location (Spatial Join)is transferring attributes from one layer to another based on their spatial relationship.

Add Polygon/Line/Point Layer to Layers panel for spatial join.

Figure 156 - QGIS canvas with point & polygon layers loaded for spatial join

In this exercise we will join the data from Parcel_point to Parcel (Polygon) layer, open attribute tables of both the shapefiles to check the attribute data.

Figure 157 - Attribute data of Point layer

Figure 158 - Attribute data of Polygon layer

Choose Vector → Data Management tools → Join Attributes by Location

Figure 159 - Join by Location window

Select Base Layer (Parcel – Data will be joined to)
Select Join Layer (Parcel_point – Data will be joined from)
Select Geometric predicate from

Intersect
Overlap
Contains
With in
Equals
Crosses
Touches

Select Join type and leave remaining as default
Click on Run
Temporary layer will be created and added to Layer panel with Joined layer layer. Right click on the layer and save to destination folder.

Figure 160 – QGIS canvas with Joined Layer created after spatial join

Open attribute table of the Joined Layer to see the attribute’s added from Point layer to Polygon layer.

Figure 161 – Attribute data of joined layer

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