best presentation on research project(gunjan dholakiya)
DESCRIPTION
Best Presentation Ever you seenTRANSCRIPT
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GML BASED DATA MANAGEMENTFOR GIS USING WFS
BY:BY:
GUNJAN DHOLAKIYAGUNJAN DHOLAKIYA
JIGAR PUROHITJIGAR PUROHIT
A Research Project A Research Project at:at:
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PURPOSE
The purpose of our project was to provide the maps, online to the user in Vector format using GML (world-wide standard) technology and provide Web Feature Services (WFS) and various functionalities on the map.
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Why This Project?
• Interoperatibility• Map Quality• Costly Proprietary Software• KML Problem
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GML
GIS
XSDSVG
Tools & Tools & TechnologiesTechnologies
Tools & Tools & TechnologiesTechnologies
XML
XSLT
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SHAPEFILETO
SVG
FUNCTIONALITIES
Query
Builder
LEGEND
EDITOR MULTILAYER
MAP
WFS
MODULES
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AGENDA
1. TOOLS & TECHNOLOGY1. TOOLS & TECHNOLOGY
2. MODULES 2. MODULES
3. MODULES WITH DEMO 3. MODULES WITH DEMO
4. SYSTEM DEMONSTRATION 4. SYSTEM DEMONSTRATION
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GIS & Shape File
GIS Definition:
• GIS is a System of computer software, hardware and data, and personnel to help manipulate, analyze and present information that is tied to a spatial location
Shape File Definition:
• A shapefile is a digital vector storage format for storing geometric location and associated attribute information.
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GMLDEFINITION:• The Geography Markup Language (GML) is the XML
grammar defined by the Open Geospatial Consortium (OGC) to express geographical features. GML serves as a modeling language for geographic systems as well as an open interchange format for geographic transactions on the Internet.
WHY GML?• No proprietary Software’s Required• Better Linking Capabilities• Easy to Edit and Understand• Open Source• Easy Interoperatibility• Based on XML
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Major Benefit of GML
• Accepts Multiple CRS System: Unlike KML or geoRSS, which is followed by Google Earth and Wikimapia, GML does not assume a single, fixed coordinate system. Instead, each coordinate system must be specified with a Coordinate Reference System.
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SVGDefinition:
Scalable Vector Graphics (SVG) is an XML markup language for describing two-dimensional vector graphics, both static and animated, and either declarative or scripted. Images can contain hyperlinks using outbound simple Xlinks. It is an open standard.
SVG IMAGES ARE SCALABLE
Original image
PNG SVG
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SVG files are smaller and more compressible than JPEG and GIF
images
BMP JPG Size: 604kb. Size: 16kb.
SVG
Size: 1kb.
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Text in SVG is selectable and searchable
(excellent for making maps)
This shows that text labels in graphics are searchable strings, not pixels.
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XML
– XML stands for eXtensible Markup Language– It is a universally accepted standard way of structuring
data (syntax).<?xml version='1.0' encoding='ISO-8859-1'?>
<directory name="/clas" owner="root" group="other" modified="Aug 22 08:34">
<file name='97-12'/>
<file name='98-02'/>
<file name='98-03'/>
<directory name='comm97'/>
<directory name='e1'/>
</directory>
Properties of node
Node contents
XML has a tree data model
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XML Schema (XSD)
• The origin of schema– XML Schema documents are used to define and
validate the content and structure of XML data.
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XSLT• XSLT is used to transform XML documents into other kinds of
documents--usually, but not necessarily, XHTML
XSLT
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System Use-Case Diagram
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Shapefile to SVG Conversion
Phase 1Phase 1 Phase 2Phase 2 Phase 3Phase 3
Shapefile to
GML
ValidateGML
TransformTo
SVG
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XSD FILEGML FILE
SVG (Final Output)XSLT (Style Sheet) B
Validate
GML
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What is WFS ?
•I provide u maps•I allow editing maps•Provide structure of schema files•Provide info how to access all ..services
WFS
WFSWFS
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WFS (ACTIVITY DIAGRAM)
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GET CAPABILITIES
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GET FEATURE INFO
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GET FEATURE
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Transaction
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QUERY BUILDER
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How will I locateRann Area, Costal
Area?
How will I locateAreas having
Specific range ofPerimeter?
Query
Builder
Hey, I haveA Solution
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QUERY BUILDER
Input Parameter Input Value
Query
Relation
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QUERY BUILDER
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LEGEND EDITOR
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Hey, I don’t like redColor. Can I change it?
Can I get the locations with larger area?
Legend Editor
Hey, I haveA Solution
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SINGLE COLOR
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GRADUATED COLOR
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LEGEND EDITOR
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MULTILAYER MAP
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Can I combineboth the maps?
Multilayer
Map
Hey, I havea Solution
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MULTILAYER MAP
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MULTILAYER MAP
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FUNCTIONALITIES
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LIMITATIONS
• The project displays data in form of SVG which requires the user to have an SVG enabled browser, though plug-ins are freely available.
• The XSLT files are developed for specific format which means every time we have a new SCHEMA a new XSLT file needs to be created.
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FUTURE SCOPE
Generalized XSLT which can transform GML into Generalized XSLT which can transform GML into SVG with the help of given SCHEMA file. SVG with the help of given SCHEMA file.
This project is developed with the perspective of This project is developed with the perspective of displaying spatial data about Gujarat, which can displaying spatial data about Gujarat, which can be extended to higher levels.be extended to higher levels.
Raster images can be placed over SVG which Raster images can be placed over SVG which would make the presentation more interactive.would make the presentation more interactive.
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