1. Run length encoding. This technique reduces data volume on a row by row basis it stores a single value where there are a number of cells of a given type in a group, rather than storing a value for each individual cell. Figure 3.8a shows a run length encoded version of the forest in Happy valley. The first line in the line file represents the dimension of the matrix (10*10) and number of entities present (1). in the second and subsequent lines of the