Open Source Web Mapping Servers: Which horse for which course?

Antony Scott

Web Mapping Servers: Which Horse for Which Course?

OSGIS 2014, Nottingham

3rd September 2014

www.astuntechnology.com

Summary

You have:• data• websiteYou need:• a web mapping server to deliver the data to

the site in WMSShould you use:• MapServer?• GeoServer?• QGIS Server?


VeryDigested summary

? ?

Install


What does it run on?

CGI Jetty/Tomcat CGI/Apache server

How to install (Windows)?

OSGeo4W (6.4)MS4W (6.0)

geoserver.org OSGeo4W

How was the install?

Pretty straightforward. Some IIS configuration needed.

Very easy using Tomcat - out of the box.

A bit fiddly, with some config required.

Installation (on Windows…)

http://trac.osgeo.org/osgeo4w/

http://www.maptools.org/ms4w/

http://geoserver.org/

http://trac.osgeo.org/osgeo4w/

Implement


Creating a WMS feed

How to create a working data source

Write a mapfile which:● Points at some data● Contains some styling

Configure a layer in the GeoServer GUI which:

● Points at some data

● Points at some styling

● Add layers to a QGIS project

● Style them● Save the project

A better idea Open the data in QGIS, create styling, and use the RT MapExporter plugin to create the mapfile

Open the data in QGIS, create styling, and use the OpenGeo Explorer plugin to publish it to GeoServer (though it’s Experimental)

There isn’t one

A different idea Don’t put any styling in the mapfile, reference some SLD in the URL

None

How hard is it? Requires some knowledge of mapfile syntax

All GUI driven if QGIS used for styling

Very easy if you are a QGIS user

What you do and what you get


MapMapserver: Edit the mapfile


Mapserver (Style from QGIS)

http://localhost/mapserver6/ms64?SERVICE=wms&VERSION=1.1.1&REQUEST=GetMap&map=C:\mapfiles\greenbelt.map&LAYERS=GreenBelt&srs=EPSG:27700&bbox=320298,86664,598604,588671&width=283&height=512&FORMAT=image/png

● Styling created in QGIS and exported to mapfile using RT MapServer exporter


GeGeoServer: Configure the UI


GeoServerhttp://localhost:8080/geoserver/Shapefiles/wms?service=WMS&version=1.1.0&request=GetMap&layers=Shapefiles:Local_Authority_Greenbelt_2011-12_27700&styles=&bbox=320298,86664,598604,588671&width=283&height=512&srs=EPSG:27700&format=application/openlayers

● Styling created in QGIS and saved as SLD● Viewed in GeoServer’s built-in OpenLayers

viewer


QGIS Server


QGIS Server

http://localhost/qgis/qgis_mapserv.fcgi.exe?map=c:/qgis/greenbelt.qgs&service=WMS&version=1.1.0&request=GetMap&styles=&bbox=320298,86664,598604,588671&width=283&height=512&srs=EPSG:27700&LAYERS=Local%20Authority%20Greenbelt%202011-12_27700&FORMAT=image/png

● Everything done in QGIS

The good and the not so


What’s good and not so?

Good All the config is in the mapfileStyling is sophisticatedAdding layers is easyPostGIS and QGIS (with plugin) integrationLow footprint and dependenciesLarge range of data sourcesStable and well-supported

All the config is GUI-drivenStyling is OGC SLDMultiple output formatsIncludes security modelPostGIS and QGIS (with plugin) integrationStable and well-supported

Publish directly from QGISStable and well-supportedLarge range of data sources

Not so Mapfile is specific to MSManual config of mapfile

Adding layers requires several steps (though easy from QGIS)SLD hard to editLimited range of data sources

QGIS-dependantLess-usedWMS/WFS output only

Use for

Integration High-end stylingMulti-format environment

Non-coding map creatorsLayer cataloguePostGIS/QGIS environmentPublishing workflow

QGIS usersRapid map publishing

Questions/experiences

Open Source Web Mapping Servers: Which horse for which course?

Software

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