Group 1 is on the pre matured satge because the pattern has a gape between oil palm more far away from each other. The size of the oil palm is also much smaller.The texture of group 1 is also has less texture .

Group 3 is on the secondly stage because the pattern has much less gap between each other . The size of the oil palm is bigger. The tone is changing from bright to greyish .

Group 2 is in the third stage because the pattern has lesser gap between oil palm tree.The tone also changing from grey to dark .

Group 4 is the mature stage because the pattern has no gap and the tone is the darkest .

Question 2

For digital streoplotter, the input can be in the form of images and the process is process by computer, which the computer will interprete the images into interaction of viewing in 3D control.The output can be in the form of coordinates.

For analytic plotter the input can be photograps and the process is through scanner or digital camera which can give us the digital images .