In the statement Con("elevm" > 30, 1, 0), what does the second argument define?

The correct answer is that the second argument defines the output if the condition is true. In the given statement, "Con" is a conditional function that evaluates whether the specified condition is met. In this case, the condition is whether "elevm" (presumably representing elevation values) is greater than 30. If this condition is true, the function will return the value specified in the second argument, which is 1. This indicates that when the elevation exceeds 30, the function gives a positive output signifying that this criteria is satisfied.

The first argument checks the condition, while the subsequent arguments determine the outputs based on whether the condition is true or false. Therefore, understanding the role of each argument is crucial when interpreting conditional statements in GIS analyses or scripting, as it allows for effective decision-making based on data conditions.