Exercise – 11 / How to Create Centroids/Point shapefile , Polygon to Line & Line to Polygon in QGIS తెలుగులో నేర్చుకుందాం

Exercise – 11 / How to Create Centroids/Point shapefile , Polygon to Line & Line to Polygon in QGIS

Centroids

The geometric center of an object is the centroid. Centroid points are useful for labeling features since they usually contain the attributes of the paired Geometry. Simply converts polygons as points with the same attribute data.

Add Polygon Layer to Layers panel

Figure 124 Parcel shapefile before creating centoids

Choose Vector → Geometry tools →Centroids

Figure 125 - Centroids creation window

Select Input layer (Ex: Parcel)
Click on Run to create centroids
Temporary layer will be created and added to Layer panel with Centroids layer. Right click on the layer and save to destination folder.

Figure 126 - Parcel with created Centroids layer

Open the attribute table for both the layers in layer panels and both the attribute tables will be same.

Figure 127 Attribute table of Parcel Attribute table of Centroids

Polygons to Lines.

Converts polygons to line.

Add Polygon Layer to Layers panel

Figure 128 - Polygon shapefile before converting to lines

Choose Vector → Geometry tools →Polygons to Lines

Figure 129 - Polygons to Lines window

Select input layer (Ex: IND_adm1)
Click on Run
Temporary layer will be created and added to Layer panel with Lines layer. Right click on the layer and save to destination folder.

Figure 130 - Polygon layer converted as Lines

Lines to Polygons.

Converts Lines to Polygons.

Add Line Layer to Layers panel

Figure 131 - Line layer before converting to Polygons

Choose Vector → Geometry tools →Lines to Polygons

Figure 132 - Lines to polygons window

Select input layer (Ex: India_line)
Click on Run
Temporary layer will be created and added to Layer panel with Polygons layer. Right click on the layer and save to destination folder.

Figure 133 - Line layer converted as Polygons

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