View source: R/monotonicity-contraints.R
add_two_points | R Documentation |
Add two additional points to a spline to ensure monotonicity of the quantile function.
add_two_points(x0, x1, y0, y1, s0, s1, a0, a1)
x0 |
Lower bound of the interval. |
x1 |
Upper bound of the interval. |
y0 |
Value of the spline at |
y1 |
Value of the spline at |
s0 |
Slope of the spline at |
s1 |
Slope of the spline at |
a0 |
Second derivative of the spline at |
a1 |
Second derivative of the spline at |
A list with eight components:
x_new1
The position of the first new point.
y_new1
The value of the spline at x_new1
.
s_new1
The slope of the spline at x_new1
.
a_new1
The second derivative of the spline at x_new1
.
x_new2
The position of the second new point.
y_new2
The value of the spline at x_new2
.
s_new2
The slope of the spline at x_new2
.
a_new2
The second derivative of the spline at x_new2
.
Thomas Blanchet, Juliette Fournier, Thomas Piketty
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