Spline

Build a Catmull-Roll spline from a set of points and returns interpolated value.

Arguments

• points: the set of x-ordered points in format { { x = x0, y = y0 }, { x = x1, y = y1 }, ....}.
• steps: how many points to interpolate btw two data points. Default is 10.

Usage

import("sci")

waterSurface = Spline{
    points = DataFrame{
        x = {0, 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000},
        y = {0, 24.7, 35.3, 48.6, 54.3, 57.2, 61.6, 66.0, 69.9}
    }
}

Functions

value	Returns the value of the spline for a given value.

value

Returns the value of the spline for a given value.

Arguments

• #1: A number value.

Usage

import("sci")

waterSurface = Spline{
    points = DataFrame{
        x = {0, 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000},
        y = {0, 24.7, 35.3, 48.6, 54.3, 57.2, 61.6, 66.0, 69.9}
    }
}

print(waterSurface:value(1500))