Sudamerica

(This is a Spanish speaking page for South America)

Hola America del Sur! Aqui se unen las personas interesadas en FOSS Geo.

Bienvenido al nuevo foro de software geográfico libre en español.

Invitacion al III Encontro Nacional de Usuarios MapServer en Brasil.

Lista de Participantes

• User:Koen Verbist
• User:Manuel Soto
• Ruby Viviana Ortiz
• Leonardo Arias
• User:Jaime Astete
• User:Danitza Guerra
• User:Myrian Tamayo
• User:Pieter Deckers
• User:Arnulf Christl
• Juan Francisco Collao

Tutorial

La Fundación OSGeo organiza información sobre software libre y abierto (Free & Open Source). Para conocer más acerca de las actividades que adelanta la Fundación OSGeo consulte la sección "Documentos" del Visisbility Committee.

Cambio de Paradigma en GIS

El artículo Proprietary to Open Source: A paradigm shift publicado en GIS@Development describe cómo desarrollar SIG (Sistemas de Información Geográfica -GIS) con estándares del OGC (Open Geospatial Consortium) y SOA (Service Oriented Architectures).

Free Software

...a licensing model

Open Source

...a development methodology

Interoperabilidad

Spatial data does not stop at given borders. Therefore it is important to make the systems that host them interoperable. One standards organization in the spatial realm is the OGC (Open Geospatial Consortium) who defined the interface specifications WMS to get maps and WFS to get the corresponding features. Those features are coded in an XML schmea called GML (Geographic Markup Language) another standard as defined by OGC. In the following section some of these services can be seen and tested.

WMS Services

Use the OSGeo Mapbender installacion to create an account.

Log on with your new account. From the list that is displayed select and open the user interface called gui. (As a tip, it might be easier to use the browser software Firefox because it can open several browser tabs in the same window and comes with tools to analyze web applications).

After opening the interface you see a map with several services, they come from different places in the world (to be able to access them you need to be online!). Browse around and have a look at the different datasets.

You can add more services by typing in the Capabilities Request of the service. Open the button called Adding WMS and type in the following WMS GetCapabilities request:

• http://siaiacad09.univali.br/cgi-bin/map461?map=/home/apache/mapserv/simmam/simmam.map&REQUEST=GetCapabilities&VERSION=1.1.1&SERVICE=WMS (this is the Capabilities URL of an old demo server from Brazil kindly provided by Univali)

Click on the page symbol called "Show service metadata", here you can see all the URL that produce the combined map:

1. DEMIS
2. JPL World Map (NASA)
3. Germany
4. Mapbender Users
5. Brazil (The Brazil Service has been added dynamically, pls observe that some layers do not work properly)
6. El servicio Invemar para Monitoreo de Calidad de Aguas Marinas y Costeras no es estandarizado.

WFS Services

No existen muchos WFS que estan abiertos para el publico. Un servidor se usa para mantener un mapa de usuarios de Mapbender.

• http://wms1.ccgis.de/geoserver/wfs/GetCapabilities?REQUEST=GetCapabilities&SERVICE=wfs&VERSION=1.0.0

Este servicio esta incluido en la GUI gui de Mapbender. Una Explicacion es encuentra en las paginas OGC WFS de Mapbender.

GeoServer

• Install http://java.sun.com/j2se/1.5.0/

Catalog Service

http://geodata.telascience.org:8080/geonetwork/srv/en/main.home

Enlaces Interesantes

1. Presentaciones relacionados con Mapbender / MapServer /PostgreSQL http://www.mapbender.org/presentations
2. Mapserver Home Page http://mapserver.gis.umn.edu/
3. Mapfile Elementos de Cartografia Mapfile Elementos de Cartografia

Resultados

A few screenshots showing some results of five days working with:

• MapServer
• GDAL/OGR
• GeoServer
• PostgreSQL
• PostGIS
• Apache http Server
• Mapbender
• QuantumGIS
• Datos de Colombia, Chile, Brazil (servicio WMS), Belgium Continental Shelf (as special guest)