Mirrors the C# OrderedPairedData.TrapezoidalAreaUnderY/TrapezoidalAreaUnderX: the
trapezoidal-rule area between the curve and the x-axis (under = "y") or the y-axis
(under = "x"). Requires x (for under = "y") or y (for under = "x") to be sorted
ascending or descending – order_x/order_y = "none" raises the same error the C# method
does.
Usage
curve_area(
x,
y,
under = "y",
order_x = "ascending",
order_y = "ascending",
strict_x = TRUE,
strict_y = TRUE
)Arguments
- x, y
numeric vectors of equal length (at least two), the curve's ordinates.
- under
one of
"y"(default, area under the curve against the x-axis) or"x"(area against the y-axis).- order_x, order_y
one of
"ascending"(default),"descending", or"none".- strict_x, strict_y
require x/y to strictly increase/decrease (per
order_x/order_y) between consecutive ordinates. DefaultTRUE.