Form 0 0 706 445 Form Qt::Horizontal Layers Operators ( >= < asin AND tan > log10 * ln Qt::Horizontal 2 20 Qt::Vertical 20 40 ^ = cos sqrt <= sin + != OR acos ) - atan / abs min max Expression Please enter a valid expression by clicking on one or more layer bands and operators. Expression is empty Predefined expressions 0 0 Add… 0 0 Save…