MLBAM and Statcast hit coordinates (hc_x, hc_y). First base is (150.88, 172.81) in pixels; the arrows show which way x (blue) and y (orange) grow.
The picture above was drawn when the docs were built. The script below draws it again with the published package.
import { drawKyogijo } from "@johnmorrisdotca/kyogijo-stadiums";
const svg = drawKyogijo({
sport: "mlb",
layers: [
{
kind: "arrows",
name: "x grows",
from: "mlbam",
data: [{ x: 150.88, y: 172.81, x2: 180.88, y2: 172.81 }],
style: { width: 1.2, color: "var(--ky-layer-home)" },
},
{
kind: "arrows",
name: "y grows",
from: "mlbam",
data: [{ x: 150.88, y: 172.81, x2: 150.88, y2: 202.81 }],
style: { width: 1.2, color: "var(--ky-layer-away)" },
},
{
kind: "points",
name: "first base",
from: "mlbam",
data: [{ x: 150.88, y: 172.81, title: "first base: 150.88, 172.81" }],
style: { size: 4, shape: "star" },
},
{
kind: "text",
name: "axes",
from: "mlbam",
data: [{ x: 189.88, y: 172.81, text: "x" }, { x: 150.88, y: 214.81, text: "y" }],
style: { size: 4 },
},
],
});
This page imports the package from jsDelivr (major version 0), which serves only versions that have been published to npm. A feature added after the last release is not in it: the page then keeps the picture above and says why. The docs were built from version 0.6.1.