legend
Area:{{$ctrl.operation}} {{$ctrl.areaMetric}}
Height:{{$ctrl.operation}} {{$ctrl.heightMetric}}
Color:{{$ctrl.operation}} {{$ctrl.colorMetric}}
green color 0 to < {{$ctrl.range.from}} > {{$ctrl.range.to}} to Infinite

yellow color ≥ {{$ctrl.range.from}} to ≤ {{$ctrl.range.to}}

red color > {{$ctrl.range.to}} to Infinite 0 to < {{$ctrl.range.from}}

selected color selected
positive delta color
negative delta color