Problem: I want to blank my contour plot only in the lower left hand corner where x < 45 AND y < 30.
Solution: You can use equations like the ones below to create a blanking variable equal to 0 only if x < 45 and y < 30. Then you can delete the extra variables {lowerx} and {lowery}. {lowerx} = max (x -45 0){lowery} = max (y – 30 0){blank} = {lowerx} + {lowery}