Digital Maps: Geographic Web Services

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Digital Maps Geographic Web Services Reunión
Otoño 2003 Mesa Ciencias de la Tierra 3 de
octubre 2003
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Intenet 2 and Geographic Applications

• Internet 2 as a communication channel
• Geographic data big volume of data
• Digital Maps Construction for a specific domain
• Collections in servers
• Services to access collections

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GISUDLA Project Goals

• Digital Map Collection Construction for a
  specific domain and the Services needed to access
• Use of standards OpenGIS
• Data Volume reduction to improve the use of the
  channel

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OpenGIS general hierarchy
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Road description an example
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Web Services
Type/Schema Registry
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What is GML ?
GML or Geography Markup Language is an XML based
encoding standard for geographic information
www.opengis.net/gml/02-069/GML2-12.html
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GML and GISELA
Geo database
GML
GML
DBF
SHP
XSLT
VRML
HTML
X3D
XSLT
SVG
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WFS general scheme
Geo-data B
Geo-data A
GML
gt Geo-Web
Geo-data C
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GML a better binary
GML data
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GISUDLA Project
ESRI ArcSDE
ESRI ArcIMS
ESRI WFS
Oracle
Arc INFO
XHTML
SVG
GML v.2.1.2
X3D
.shp .dbf GML
WFS
OpenGIS MySQL
Data Sources
Web Services
User Interface
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GML Schema of the Feature Department
ltxselement name"Departamento" type"exDepartamentoType" substitutionGroup"gml_Feature"/gt ltxscomplexType name"DepartamentoType"gt ltxscomplexContentgt ltxsextension base"gmlAbstractFeatureType"gt ltxssequencegt ltxselement name"nombre" type"xsstring"/gt ltxselement name"jefeDepartamento" type"xsstring"/gt ltxselement ref"gmlpointProperty"/gt lt!-- Punto que apunta a la ubicación del departamento --gt lt/xssequencegt lt/xsextensiongt lt/xscomplexContentgt lt/xscomplexTypegt
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GML Code of the Feature Department
ltDepartamentogt ltnombregtDepartamento de Sistemaslt/nombregt ltjefeDepartamentogtAbraham Ameneirolt/jefeDepartamentogt ltgmlPointPropertygt ltgmlPointgt ltgmlcoordgt ltgmlXgt1.0lt/gmlXgt ltgmlYgt1.0lt/gmlYgt lt/gmlcoordgt lt/gmlPointgt lt/gmlPointPropertygt lt/Departamentogt
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GISUDLA Online
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Metadata Digital Layer Access
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Generating GMLv2.1.2
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Layer Visualization
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Final Remarks

• Service construction
• Use of standards OpenGIS
• Platform to add new functions
• Application can be installed easily
• Map visualization and user interaction should be
  improved with a wide bandwidth to have a good
  performance

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gisudla_at_mail.udlap.mx www.udlap.mx/ gisudla
Abraham López Ameneyro Antonio Razo
Rodríguez David Sol Martínez Gerardo Cepeda Porras