The Kodokan's main dojo: 420 jō

The mat count is the Kodokan's own; the shape of the floor and the colours are not documented.

DojoDrawn as: a dojo of 420.82 jō, 26.4 by 26.4 metres, laid with tatami of 1.82 by 0.91 metres metres so that no four corners meet. The kamiza is at the north. A raised platform stands at the kamiza wall, the seat of honour. A plain dark banner hangs on the kamiza wall. 4 contest areas of 8 metres are marked on the floor.

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";
import { placeById, surfaceOf } from "@johnmorrisdotca/kyogijo-stadiums/atlas";

const svg = drawKyogijo({ ...surfaceOf(placeById("kodokan")), crowd: true });

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.