OGC Standards

Supported Standards

Phase 1 (Current)

Standard	Version	Support Level
WMS	1.1.1, 1.3.0	Full (read)
GeoJSON	RFC 7946	Full
XYZ / Slippy Map Tiles	—	Full
OGC API - Features	Part 1: Core	Basic consumption
OGC API - Maps	Part 1: Core	Basic consumption

Phase 2 (Planned)

Standard	Version	Support Level
WFS	2.0.0	Read (GetFeature)
WMTS	1.0.0	RESTful + KVP
Mapbox Vector Tiles (MVT)	2.1	Decode + render

Phase 3 (Future)

Standard	Version
3D Tiles	1.1
glTF	2.0
CoverageJSON	0.6

WMS Integration

MapGPU’s WMS adapter handles both version 1.1.1 and 1.3.0 with automatic version detection.

Key Version Differences

Parameter	WMS 1.1.1	WMS 1.3.0
CRS parameter	`SRS=EPSG:4326`	`CRS=EPSG:4326`
BBOX order (4326)	lon,lat,lon,lat	lat,lon,lat,lon
Exception format	`INIMAGE`	`XML`

Critical: For EPSG:4326, WMS 1.3.0 reverses the BBOX coordinate order to lat,lon. The adapter handles this automatically.

Usage

import { WMSLayer } from '@mapgpu/layers';

const wmsLayer = new WMSLayer({
  id: 'boundaries',
  url: 'https://example.com/wms',
  layers: 'admin_boundaries,roads',
  transparent: true,
  format: 'image/png',
});

view.map.add(wmsLayer);

GetFeatureInfo

// Click query
const result = await wmsLayer.getFeatureInfo({
  x: clickX,
  y: clickY,
  format: 'application/geo+json',
});

OGC API - Features

Modern REST-based alternative to WFS:

import { OGCFeatureLayer } from '@mapgpu/layers';

const layer = new OGCFeatureLayer({
  id: 'admin',
  url: 'https://api.example.com/collections/admin',
  limit: 1000,
});

view.map.add(layer);

Endpoint Pattern

GET /collections                         → Collection list
GET /collections/{id}/items              → Feature list (GeoJSON)
GET /collections/{id}/items?bbox=...     → Spatial filter
GET /collections/{id}/items?datetime=... → Temporal filter

CORS Handling

Many enterprise WMS/WFS services don’t return CORS headers. MapGPU provides a proxy option:

// Per-layer proxy
new WMSLayer({
  url: 'https://internal-gis.company.com/wms',
  proxyUrl: 'https://my-proxy.example.com/ogc-proxy',
});

// Global proxy
mapgpu.config.proxyUrl = 'https://my-proxy.example.com/ogc-proxy';