Web GIS

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Web GIS
By KAVAL KUMAR DASANLA FACULTY ESCI,Hyderabad
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GIS - Geographic Information Systems
a computer system designed to allow users to
collect, manage and analyze large volumes of
spatially referenced information and associated
attribute data. a computer based system used
to input, store, retrieve, and analyze geographic
data sets. The GIS is usually composed of
map-like spatial representations called layers
which contain information on a number of
attributes such as elevation, land ownership and
use, crop yield and soil nutrient levels A
computerized system that provides advanced
capabilities for the processing and
interpretation of spatial information from the
real world GIS is a "smart map" tool that
allow users to create interactive queries (user
created searches), analyze the spatial
information, and edit data INTEGRATION OF
SPATIAL DATA NON SPATIAL DATA
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Major Stages of GIS

• Raster to Vector conversion
• Topology Build
• Editing
• Geo-reference
• Projection
• Thematic mapping
• Data Integration
• Customisation
• Users -Implementation

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APPLICATIONS
Application areas
Decision support Admin

• Natural resource management
• Agriculture
• Landuse planning
• Rural Development
• Urban planning
• Disaster Management
• Forestry
• Geology- Morphology, Groundwater
• Watershed management ..

Policing Municipal Utility sector Health Education
Irrigation Land Records Development
programs Transport Tourism Archeology Crop
Insurance Housing ..
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PROJECT DETAILS

• The Project is dealt in FOUR PHASES
• Phase 1 Base map preparation.
• Phase 2 Property survey and utility mapping
• Phase 3 GIS application development.
• Phase 4 Web enabled GIS development

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METHODOLOGY - I
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PREPARATION OF UPDATED BASE MAP

• REQUIREMENTS
• High Resoultion satellite data with Physical
  Features and 1m/0.5m interval contour information
• Updated Maps and Records of Properties
• Infrastructure to develop a Customized GIS
• Package

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SCOPE OF THE ASSIGNMENT
TO ACCOMPLISH

• Large scale base map covering entire municipal
  
• limit.
• GPS ground control survey for geo-coding geo-
  
• referencing.
• 1m Contour maps for upland towns and 0.5m
• contour interval for coastal towns.
• Above data sets in softcopy format for easy
• integration with block boundaries, ward
• boundaries, etc.

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SCOPE OF THE ASSIGNMENT ..CONTD.

• Updated base maps.
• Property information captured plot area,
  plinth area,
• property assessment numbers, land use, etc..
• Utilities mapped water supply, under ground
  drains,
• street lighting, roads, etc..
• Application of GIS software
• H.R.D. Capacity Enhancement - awareness of GIS
  by
• municipal staff

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BASEMAP STATUS WITH THE ULBS
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SAMPLE OUTCOME
Property usage map
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FEATURES CAPTURED IN BASE MAP
? Road network of all types of roads with
associated details. ? Rivers and
drainage systems including all water
bodies. ? Railways with associated
details. ? All built up structures such as human
settlements, industries, educational,
recreational, religious etc. ? Utility services
such as water supply, sewerage
system, power distribution etc.
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FEATURES CAPTURED IN BASE MAP.contd.
? Cadastral boundaries ? Contour at one
meter / 0.5 meter interval. ? Green cover ?
Others - based on local conditions

• The base maps are prepared on various
• layers for ease of operation in GIS.

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IKONOS DATA OF PART OF MACHILIPATNAM
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FEATURE EXTRACTION FROM IKONOS IMAGE
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VECTORISED LAYER OF PART OF MACHILIPATNAM
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IKONOS DATA OF PART OF MACHILIPATNAM
Municipal Office
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(No Transcript)
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BASE MAP BEFORE FIELD SURVEY
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APPROACH AND METHODOLOGY
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METHODOLOGY - II
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DETAILS OF PROPERTY AND UTILITY MAPPING AND
DEVELOPMENT OF GIS ? The details of
properties assessment number (house number
wise) ? Plot and building boundaries
measured. ? Building height approximated to the
nearest meter with number of floors ? Usage
of building with trade specification if
any ? Type of structure
DETAILS OF PROPERTY AND UTILITY MAPPING AND
DEVELOPMENT OF GIS
The tasks covered
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PROPERTY AND UTILITY MAPPING DEVELOPEMNT OF
GIS contd..
? Water Supply details ? Details of intake
works including pump station (if any) ? Raw
water mains ? Treatment plant(s) ? Built
distribution, transmission ? Reservoir tanks
including balancing tanks and bor In
relation to the above material, age and capacity
are collected. Information on the
distribution system ? The diameter, age,
material and condition of pipe ? The location of
valves and bulk meters ? House service
connections, public stand posts inter-
connections and valves on each line and
separately ? Transmission mains including
pressure mains
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PROPERTY AND UTILITY MAPPING DEVELOPEMNT OF GIS
contd..

• Underground Drainage
• ? Trunk sewers, main sewers and sub main sewers
• ? The location of manholes, center to center
  distance from upstreams manholes and from
  downstream manholes, house service connections
• ? The diameter, age, material and conditions of
  pipe
• Surface Drains
• ? The main town level drains with final disposal
  points
• ? The intermediately drains and all other
  drains
• ? Cross section of all drains with clear width
  and depth (levels)

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PROPERTY AND UTILITY MAPPING DEVELOPEMNT OF GIS
contd..

• Street Lighting
• ? Street lighting network system with
  information about transformers, electric poles,
  high mast lighting, status of working condition
  etc.
• Roads
• ? Road network system with clear hierarchy
• ? Information relating to right of way, carriage
  way, width of footpath
• ? Information relating to type, condition

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PROPERTY AND UTILITY MAPPING DEVELOPEMNT OF GIS
contd..
Data on property and utilities network
1. Actual measurement of locations and assets
in the field. 2. Abstraction of
details from 'as built' drawings. 3.
Information from adhoc sources such as field
books in local offices and
knowledge from long serving employees.
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PROPERTY AND UTILITY SURVEY
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PROPERTY UTILITY SURVEY
MANUALLY UPDATED FIELD BASE MAP
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PROPERTY UTILITY SURVEY
BASE MAP BEFORE FIELD SURVEY
DIGITALLY UPDATED BASE MAP
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CUSTOMISED GIS APPLICATIONS
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DATA COLLECTION PROFORMA
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BEFORE PHYSICAL SURVEY
AFTER PHYSICAL SURVEY
Base Map v/s Updated field map
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• Door numbering system
• We propose to conduct detailed study on the
  existing door numbering system in GHMC area
  provision of door numbers for vacant sites and
  a new simplified rationale numbering system
  will be developed in consultation with GHMC
• Rust free steel number plates to the buildings
  with the given specifications of 10 X 5 MS pre
  coated 1mm thickness plate with letters in
  white and blue background colour.
• The vacant sites will also be given continuous
  number.

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• Existing System of House Numbering
• The present House Numbering System consists of
  Ward - Block - House
• number and the same is being followed since
  long.
• The house numbers are not in a continuous
  series. When a new house comes
• into existence in between the existing
  numbers, sub nos. and bye-numbers
• are given without any order, causing further
  confusion
• Entire GHMC will be divided into different
  blocks. Block boundaries will be
• drawn in such a way that the boundary is
  clearly identifiable on ground with
• reference to land marks.
• In the new system the entire city will be
  delineated into Localities and Main
• roads. The premises are numbered in the
  Localities and Main Roads
• separately in a continuous series.
• 5-digit Locality Code Number is proposed to be
  given for all the localities,
• where, first two digits represent Ward
  Number and the last three digits

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• Delineation of Localities
• Localities are proposed to be delineated in each
  ward, with the following parameters
• The locality is viable in terms of area and
  population and has distinct boundaries.
• The name of the area is prominent with reference
  to name of colony, Revenue Village, Post
  Office, GHMC Council ward etc.
• The Area is to delineated with reference to ward
  boundary, Broad Network of roads, Physical
  Boundaries like Watercourses, Drains, and Railway
  Lines etc.
• While delineating the areas smaller localities,
  colonies, slums that are locally known with
  reference to prominent locality name are
  included and comprehensive area is delineated.

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APPLICATION DEVELOPMENT

• Assignment of House Numbers
• Each premises built-up / open will be assigned
  with one number.
• Each Apartment / Commercial Complex will be
  assigned, with one general
• number.
• Each Flat / Shop / Unit will be assigned with
  by-numbers.
• Slums which are prone for changes will be
  assigned two or block wise
• numbers easy location the houses.
• Normally the numbering in a locality would start
  from the corner nearer to
• the city centre.
• The street that nearer to the city centre will be
  numbered as street number 1.
• Similarly numbering on main roads will be done
  from one end of the road to
• the other end and continue the series on
  the other side till the starting end.
• A locality may abut main road / roads
  where there will be separate series of
• numbers.
• Detailed locality plans will be prepared for all
  localities, main roads showing the locality
  boundaries, streets, lanes, premises with old and
  new numbers.
• House / Premises numbers displayed and street
  boards are fixed.

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Showing the selected road attributes
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Sample web pages showing the Road Attributes
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Sample web pages showing the gRIS
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Proposed Scope Application Development
Module Name Scope
 Town Planning Module User interface for entry of application for layout approval Work-flow implementation for layout approval process User interface for capturing the land-use conversion information User interface for capturing encroachments/plan violations Development of application logic for automation door-number generation process
Property Tax (Property Tax Calculation Fresh Assessment Transfer of ownership Sub division of property ) Development of business logic for calculation of MRV and automated tax calculation Search Functionality for Properties based on various parameters defined for the properties Demand notice generation process for property tax including calculation of pending taxes and arrears, collection of taxes Development of application for recording and tracking the Hearing settlements Development of user interface for digitization of the existing properties non-spatial data in the Corporation Development of application for entering the new properties data including necessary business logic and work-flow
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Application Development-Module Customization
Property Tax
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Application Development - Module Customization
Vacant Land Tax
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APPRAISAL REPORT
ON COMPREHENSIVE SURVEY PLAN

• No. of properties mapped and data collected
  through survey formats shall be same.
• No property shall be left without integration of
  non-spatial data.
• All polygon themes shall have feature area in
  attribute tables.
• All polygon themes should not have any silver
  polygons.
• All maps should be demarcated with specified
  symbols and colors in the soft copy.

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CHECKLIST FOR ROAD

• The ward wise road network type and condition of
  all layers .
• Road widths, schedules, landmarks.
• The hatch pattern for roads type and color for
  condition in all wards.
• Major landmarks in all wards.

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CHECKLIST FOR SURFACE DRAINS

• Ward wise drainage network.
• The ward wise type and condition.
• Flow direction in all wards.
• Schedules landmarks drain condition and type
• Culverts in blocks.

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CHECKLIST FOR WATER SUPPLY

• Ward wise water supple network in layers (type
  and condition).
• Flow direction in all wards.
• Reservoirs and water sources in blocks.
• Valves, pump sets, power bores, landmarks, legend
  in all wards

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CHECKLIST FOR STREETLIGHTING AND SOLIDWASTE
MANAGEMENT

• Ward wise street lighting maps --in types and
  condition of layers.
• Garbage bins, dust bins -- type and condition
• Street lights type and condition in all wards.

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OUT PUT OF GIS

• Shape files and Arc map document (.mxd) ward wise
  and sector wise to be submitted.
• Fair maps data with specified colors and symbols
  to be submitted in A1/A0 size.

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Web-enabled GIS Applications

• User needs assessment and requirements
  specifications.
• Project Planning.
• Database designing.
• Verification/editing of data.
• Database development.
• Application Coding.

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TECHNICAL DETAILS

• Database used SQL server 2000, Arc SDE 9.1
• Platform NET
• Front-End ASP, ASP. net, C.
• Back-end SQL Server2000, Arc SDE 9.1
• Web server IIS 6.0
• Application Server/Spatial Server Arc IMS 9.1

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Mail us at, wrd_esci_at_yahoo.com
THANK YOU