Web Mapping and GIS Final Exam 2022 with complete solution
concept of standards and their use both outside of and for the geospatial industry
Why have them?
Be able to explain why important for web mapping and GIS
...
Web Mapping and GIS Final Exam 2022 with complete solution
concept of standards and their use both outside of and for the geospatial industry
Why have them?
Be able to explain why important for web mapping and GIS - Standards makes things more efficient and effective by establishing norms
19500 standards
International Standards Organization
Goals of standards is to communicate, execute programs, or transfer data with user having little or no knowledge
Software engineered to work with different formats
major standards organization for the geospatial industry and how it is comprised - Open Geospatial Consortium
Data, systems, and process standards
Specific standards for many industries (aviation, energy, sensor webs)
specific geospatial standards - Geo(JSON) (Javascript Object Notation)- lightweight data interchange format
KML (Keyhole Markup Language)-points,rasters,lines,polygons, defines visualizations
WMS (Web Map Service)-standard for requesting and serving georeferenced map images over internet..how HTTP requests and responses are handled between client/server. rendered on the fly,
WMTS (Web Map Tile Service)-predefined image files
WFS (Web Feature Service)-standard for reading/writing vector geographic data
WCS (Web Coverage Service)-retrieval of actual geospatial data
GML (Geography Markup Language)- exchange standard, modeling language for geographic systems
GPX (GS eXchange Format)- stores GPS data
XML (eXtensible Markup Language)-standard for exchanging and storing data/documents
there are data formats that are widely used but not necessarily adopted by standards organizations - their specifications are published and open so software can be built to use them
WMS and WFS - Web Mapping Service and Web Feature Service
WMS-standard for requesting and serving georeferenced map images over internet..how HTTP requests and responses are handled between client/server. rendered on the fly,
WFS-standard for reading/writing vector geographic data
contrast WMS with WMTS - Web Mapping Service- around longer, more flexible for returning custom georeferenced map images, clunky with potential for slower responses
Web Map Tile Service-standard for delivering tiles, potentially reduces data and thus bandwidth...more efficient
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