Figure 4

The importance of the four bands (Blue, Green, Red and NIR) and the NDVI index in the Random Forest classification of the SPOT 6 imagery (a) mean decrease in accuracy, (b) mean decrease in Gini and (c) multiple way importance plot showing the magnitude of contribution to RF classification between the classes Jacaranda mimosifolia, Platanus × acerifolia (London Plane) and other vegetation types in the city of Johannesburg.