Scale/offset

pkg/timeseries/transform_functions.go

@@ -0,0 +1,29 @@
+package timeseries
+
+func TransformScale(factor float64) TransformFunc {
+	return func(point TimePoint) TimePoint {
+		return transformScale(point, factor)
+	}
+}
+
+func TransformOffset(offset float64) TransformFunc {
+	return func(point TimePoint) TimePoint {
+		return transformOffset(point, offset)
+	}
+}
+
+func transformScale(point TimePoint, factor float64) TimePoint {
+	if point.Value != nil {
+		newValue := *point.Value * factor
+		point.Value = &newValue
+	}
+	return point
+}
+
+func transformOffset(point TimePoint, offset float64) TimePoint {
+	if point.Value != nil {
+		newValue := *point.Value + offset
+		point.Value = &newValue
+	}
+	return point
+}