In this lesson we’ll observe how to include new features into a vector layer according to a mathematical expression, utilizing the vector calculator. A similar algorithm can be currently readily available for vector layers, also creates a new layer using the characteristics of the input , and an extra one using all the end result of the expression. The algorithm is named Field calculator also contains the parameters dialogue. The port has changed substantially, it is stronger and simpler to use. Here are a couple of examples of using that plan. Let’s compute the population density of men and women in every single polygon, which reflects a census. The parameters dialogue ought to be full as shown under. Let’s compute the ratio involving the MALES and FEMALES areas to make a new one which indicates if man inhabitants are predominant over feminine inhabitants. Before pressing the OK button this time that around the parameters window should look like that.