The Kodokan's main dojo in its earlier colours

All green mats, the four contest areas outlined by red-orange border mats (the owner's older photograph). The years of the two looks are not known, so the eras carry none.

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

const earlier = hallSurfaces(placeById("kodokan")).find((floor) => floor.id === "main-dojo-earlier");
const svg = drawKyogijo({ sport: earlier.sport, ...earlier.options, 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.