gibsGrid関数

The Geographic (EPSG:4326) tile matrix NASA's imagery service publishes, read from its capabilities on 2026-11-13. A pixel is 0.5625 / 2^level degrees. Tiles are 512 pixels, the corner of column 0 and row 0 is longitude -180 and latitude 90, and a level has as many tiles as it takes to cover the Earth, so levels 0, 1 and 2 run past it.

import { gibsGrid } from "@johnmorrisdotca/chikyu-earth/door";

function gibsGrid(matrix: "31.25m" | "250m" | "500m"): MapGrid

import { gibsGrid } from "@johnmorrisdotca/chikyu-earth/door";

console.log(gibsGrid("250m").levels[3]);

{
  level: 3,
  width: 5120,
  columns: 10,
  rows: 5,
  west: -180,
  north: 90,
  tileLon: 36,
  tileLat: 36
}