Using the Clipper (Raster tools) in QGIS 2.8.1

CLICK HERE TO WATCH YOUTUBE VIDEO DEMO

 

Task

To demonstrate how to use the Clipper tool in QGIS 2.8.1 to clip out a section of a GeoTIFF image.

Procedure

Add the georeferenced raster image. Go To Raster > Extraction > Clipper

a

In the Clipper dialog box, name the output file. For the demo, Extent Clipping mode is selected. Select the extent by dragging the cross cursor to form a square around the area that is to be clipped out. Once that is done, the extent coordinates will automatically appear in the dialog window. Click OK.

b

A Processing completed message box will appear. A new raster layer will appear on the Layers window.

c

 

Right Click on the new layer > Zoom to Layer. The layer will appear in view.

d

 

The new layer may not have copied the correct CRS from the layer it was clipped from. To adjust the CRS, Right Click on the new layer >Set Layer CRS

e

 

In the dialog box, select the corresponding CRS. For the demo, Minna/Nigeria West Belt is selected.

f

 

Zoom to layer and observe the layer is now displaying the appropriate coordinates.

g

 

Thank you for the audience.

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