Function meshMap

map two arrays to a "field" of 2D array through a mapping function.

given a mapping function map_fn, and two arrays x_values and y_values, this function generates a 2D array where each element is the result of applying map_fn to the corresponding elements from x_values and y_values.

Example

z is a function of x and y defined by: z(x, y) = x + y.
to create a 2d grid of z_values using x_values = [1, 2, 3] and y_values = [4, 5], we do the following:

import { assertEquals } from "jsr:@std/assert"

const
	add = (x: number, y: number) => (x + y),
	x_values = [1, 2, 3],
	y_values = [4, 5],
	z_values = meshMap(add, x_values, y_values)
assertEquals(z_values, [
	[5, 6],
	[6, 7],
	[7, 8],
])
  • meshMap<X, Y, Z>(
        map_fn: (x: X, y: Y) => Z,
        x_values: X[],
        y_values: Y[],
    ): Array2D<Z>

  • Type Parameters

    • X
    • Y
    • Z

    Parameters

    • map_fn: (x: X, y: Y) => Z

      the mapping function that takes an x value from x_values and a y value from y_values, and returns the mapped z_value.

    • x_values: X[]

      the values to be used as the major axis (rows) of the resulting 2D array.

    • y_values: Y[]

      the values to be used as the minor axis (columns) of the resulting 2D array.

    Returns Array2D<Z>

    a 2D array with mapped values from x_values and y_values

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