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3. You now need to define the vineyard block that you wish to analyse, by using the [Define a region of interest] tool:

By using the left-hand-mouse-button click on points around the boundary the block desired:

If you make a mistake with any of the points as you are marking out the block boundary, you can use the [Undo polygon point] button:

To close (finish) to polygon boundary, press the right-hand-mouse-button:

Return to OrthoViewer Main Menu…..