Summary of OGC Web Services in MapServer Jeff McKenna Gateway Geomatics

MapServer Supports: WMS (server/client) SLD WFS (server/client) GML Filter Encoding WCS (server) WMC SOS (server)

WMS (server/client)

SLD

WFS (server/client)

GML

Filter Encoding

WCS (server)

WMC

SOS (server)

OGC Compliance Passed tests for WMS 1.1.1 and 1.3.0 Certification pending, for 5.6.0 release Ongoing testing for WFS 1.0.0 and 1.1.0* WCS 1.0.0* and 1.1.0* SOS 1.0.0 WMC 1.1.0 Track our progress in the Trac Wiki at http://trac.osgeo.org/mapserver/wiki/MapServerOGCCITECompliance

Passed tests for WMS 1.1.1 and 1.3.0

Certification pending, for 5.6.0 release

Ongoing testing for

WFS 1.0.0 and 1.1.0*

WCS 1.0.0* and 1.1.0*

SOS 1.0.0

WMC 1.1.0

Track our progress in the Trac Wiki at http://trac.osgeo.org/mapserver/wiki/MapServerOGCCITECompliance

MapServer Support Notes: Requires a regular MapServer .map file, with additional simple metadata Since v4.4 (2004), "ows_*" metadata can be used for common metadata items shared by multiple OGC interfaces (e.g. ows_title vs wms_title + wfs title)

Requires a regular MapServer .map file, with additional simple metadata

Since v4.4 (2004), "ows_*" metadata can be used for common metadata items shared by multiple OGC interfaces (e.g. ows_title vs wms_title + wfs title)

WMS Provides images of map data 2001: Initial implementation, thanks to funding from NRCan's Canadian Forest Service (CFS) Supports WMS 1.0.0, 1.1.0, 1.1.1. and 1.3.0 Operations: GetCapabilities DescribeLayer GetMap GetFeatureInfo

Provides images of map data

2001: Initial implementation, thanks to funding from NRCan's Canadian Forest Service (CFS)

Supports WMS 1.0.0, 1.1.0, 1.1.1. and 1.3.0

Operations:

GetCapabilities

DescribeLayer

GetMap

GetFeatureInfo

WMS 1.3.0 Initial support in MapServer 5.4 (April 2009) ISO 19128 axis order hell (required to strictly follow axis order from EPSG instead of always x,y) new coordinate reference systems (e.g. CRS:84 for WGS 84 (EPSG:4326) in lon,lat) use of CRS parameter (instead of SRS) SLD 1.1.0

Initial support in MapServer 5.4 (April 2009)

ISO 19128

axis order hell (required to strictly follow axis order from EPSG instead of always x,y)

new coordinate reference systems (e.g. CRS:84 for WGS 84 (EPSG:4326) in lon,lat)

use of CRS parameter (instead of SRS)

SLD 1.1.0

SLD WMS extension, enables remote custom styling (data on server is not changed) Client sends XML document for symbolization 2004: Initial implementation (MapServer 4.2) Operations added to WMS: GetLegendGraphic GetStyles PutStyles

WMS extension, enables remote custom styling (data on server is not changed)

Client sends XML document for symbolization

2004: Initial implementation (MapServer 4.2)

Operations added to WMS:

GetLegendGraphic

GetStyles

PutStyles

WFS Provides access to vector features geometry and attributes in form of GML 2001: Initial implementation (v1.0.0) Supports WFS 1.0.0 and 1.1.0 MapServer supports basic WFS Not transactional (WFS-T) MapServer architecture optimized for map rendering, not well suited to transactional Great alternatives for WFS-T include TinyOWS and GeoServer

Provides access to vector features geometry and attributes in form of GML

2001: Initial implementation (v1.0.0)

Supports WFS 1.0.0 and 1.1.0

MapServer supports basic WFS

Not transactional (WFS-T)

MapServer architecture optimized for map rendering, not well suited to transactional

Great alternatives for WFS-T include TinyOWS and GeoServer

WFS Operations GetCapabilities DescribeFeatureType GetFeature For serving Oracle and Postgis via WFS efficiently, must specify “ ows_extent ” metadata to avoid calculating the extent on every request

Operations

GetCapabilities

DescribeFeatureType

GetFeature

For serving Oracle and Postgis via WFS efficiently, must specify “ ows_extent ” metadata to avoid calculating the extent on every request

GML Used as exchange format by WFS Besides WFS, MapServer can also access static GML files Through OGR library Read access for GML2

Used as exchange format by WFS

Besides WFS, MapServer can also access static GML files

Through OGR library

Read access for GML2

Filter Encoding Allow XML queries for WFS requests Used in SLD for classification Spatial and attribute query capabilities Logical Spatial Comparative

Allow XML queries for WFS requests

Used in SLD for classification

Spatial and attribute query capabilities

Logical

Spatial

Comparative

WCS Provides access to raw imagery data (e.g. DEM and GeoTIFF) 2004: Initial implementation in MapServer 4.4 Supports WCS 1.0.0 and 1.1.0 Operations GetCapabilities DescribeCoverage GetCoverage MapServer cannot act as a WCS client natively (can be done through GDAL)

Provides access to raw imagery data (e.g. DEM and GeoTIFF)

2004: Initial implementation in MapServer 4.4

Supports WCS 1.0.0 and 1.1.0

Operations

GetCapabilities

DescribeCoverage

GetCoverage

MapServer cannot act as a WCS client natively

(can be done through GDAL)

WMC Saves Web Mapping application state remote WMS layer pointers Like “project” files in common desktop GIS XML-based Supported by MapServer CGI and MapScript 2006: Initial implementation

Saves Web Mapping application state

remote WMS layer pointers

Like “project” files in common desktop GIS

XML-based

Supported by MapServer CGI and MapScript

2006: Initial implementation

SOS Provides access to sensor observations and measurements Initial implementation (SOS 1.0.0) in MapServer 4.8 (2006), thanks to funding from Environment Canada Operations GetCapabilities DescribeSensor GetObservation Server only

Provides access to sensor observations and measurements

Initial implementation (SOS 1.0.0) in MapServer 4.8 (2006), thanks to funding from Environment Canada

Operations

GetCapabilities

DescribeSensor

GetObservation

Server only

Future Work, Wish List Official OGC Compliance Ongoing effort Support for new releases of supported specifications as they become available Legends for Raster layers

Official OGC Compliance

Ongoing effort

Support for new releases of supported specifications as they become available

Legends for Raster layers

Learning more... MapServer OGC Documentation http://mapserver.org/ogc/ MapServer OGC workshop http://ms-ogc-workshop.maptools.org/

MapServer OGC Documentation http://mapserver.org/ogc/

MapServer OGC workshop http://ms-ogc-workshop.maptools.org/

Questions?