SERUG 2008 1

Cobb County GIS:Cobb County GIS:Beyond the MapBeyond the Map

Charles FailTim Scharff

Cobb County GIS

SERUG 2008 2

TopicsTopics

Cobb GIS OverviewThe Early YearsEnterprise GIS TransitionPutting It TogetherLooking Ahead

SERUG 2008 3

Cobb GIS OverviewCobb GIS Overview

Mission– create, operate, and maintain an efficient, cost-

effective geographic information system through the use of specialized computer, mapping and digital aerial photography technologies in support of the Board of Commissioners, elected officials, and county departments.

SERUG 2008 4

Cobb GIS OverviewCobb GIS Overview

Enterprise GIS Plan– Serves as the guiding document for the

countywide GIS implementation– Consists of 6 major program elements:

• Databases, Hardware, Software, Applications, Personnel, and Program Mgmt

– Initial 5-Year GIS Implementation Plan approved by the BOCC in 1999

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Cobb GIS OverviewCobb GIS OverviewProvides Provides overall overall

direction for direction for GIS ProgramGIS Program

Develops dept Develops dept GIS plan, GIS plan, ensures ensures database database

standards, standards, coordinates coordinates

trainingtraining

Overall Overall management of management of the Enterprise the Enterprise

GISGIS

Provides Provides technical technical guidance, guidance, formulates formulates

recommended recommended solutionssolutions

Shares knowledge, Shares knowledge, multimulti--departmental departmental

networkingnetworking

SERUG 2008 6

The Early YearsThe Early Years

Database Development– Base Map (2000, 2003)– Tax Assessor Parcels (2003)– Coverages, Shapefiles, and pGDB’s

Application Development– ImagePicker Extension (ArcView 3.x)– Web Mapping Site (hosted externally)

SERUG 2008 7

The Early YearsThe Early Years

Hardware / Software– ArcGIS Desktop 8.x– ArcView 3.x– File Server

Users– Year 4 projection: 100 users– Actual number: 200 users

SERUG 2008 8

Enterprise GIS TransitionEnterprise GIS Transition

TriggersMulti-User Editing NeedsMulti-Department Approach To:– Data Models, Data Maintenance Workflows

Replacement of business applicationsUpdated Vision:– Make GIS a transparent technology that is

used routinely to create, manage, and analyze data

SERUG 2008 9

Enterprise GIS TransitionEnterprise GIS Transition

ResultsEnterprise GDB Development & Migration– CobbETRANS (2004)– Parcel Geodatabase (2005)

Accessibility & Ease of Use– Cobb GIS Data Access Tool– Web Mapping Sites

Infrastructure Changes– Separate Edit & Production Environments– ArcIMS & ArcSDE Implementation

Production Server

ArcSDE 9.1

Edit Server

ArcSDE 9.1

Web Server

(reverse proxy)

RouteMap

Application Server

ArcIMS 9.1GeoCortex 5.1

ArcGIS Server 9.1

Nightly Synch

ArcGIS Desktop 9.1 Users (AI, AE)

Edit Production

ArcGIS Desktop 9.1 Users (AV)

Various Appsaccess

database views

Internal Web Mapping Users

Public

Web Mapping

Sites

External Web

Server

(DMZ)

Cobb County

System at v9.1

Firewall

SERUG 2008 11

Putting It TogetherPutting It Together

We had a lot of the ingredients, now what?– Automate eGDB synchronization– Facilitate use– Look for integration opportunities– “Make the cake”

SERUG 2008 12

GIS Edit ServersGIS Edit Servers

For data editing onlyNot visible to general GIS usersEdit environment consists of:– One centralized server– Two department workgroup servers

SERUG 2008 13

GIS Edit ServersGIS Edit Servers

GISGeneral Data

5151dev_gis

Land MgmtParcels

5152dev_landmgmt

Land UseFuture Land Use

Zoning

5157dev_landuse

Public SafetyFire

Police

5154dev_pubsafety

Com DevAddresses

Cities

5156dev_comdev

Sheriff

5155dev_sheriff

EmergencyMgmt

5160dev_ema

Test

5170dev_test

Database / Service ConfigurationDatabase / Service Configuration

WaterHydrantsCMOM

5158dev_water

TransportationCobb ETRANS

giswg01\sqlexpress

E911E911 Data

5169dev_e911trans

WaterWaterSewer

5171water_sde

StormInventory

Hydro

5172storm_sde

GISSDEDEVGISSDEDEV GISWG01GISWG01

GISWATSDEGISWATSDE

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GIS Production ServerGIS Production Server

Contains read-only dataServes data for all Desktop- and Web-based clientsSome data restricted to internal usersApproximately 2 terabytes of data– 10GB of vector data– 200GB / year for orthophotos

SERUG 2008 15

GIS Production ServerGIS Production Server

Test

5199sde_test

Database / Service ConfigurationDatabase / Service Configuration

GISVector Data

5151sde_gis

GIS2Vector Data

5153sde_gis2

OrthosRaster Data

5152sde_orthos

SERUG 2008 16

eGDBeGDB SynchronizationSynchronization

GIS layer changes moved nightly from “Edit” servers to “Production” serverRelated data from other business systemsSeries of SDE Commands, SQL Sever Packages, VB Scripting

Base Map Data (Contours, Orthos, etc) updated annually

SERUG 2008 17

Why Not Replication?Why Not Replication?

Synchronization scripts developed prior to v9.2Replication can handle some cases:– Update single feature class– Example: Parcels

But not others:– Event creation and SQL post-processing– Example: Roads

SERUG 2008 18

Recent DevelopmentsRecent Developments

Databases– Zoning Geodatabase

Applications– Data maintenance tools– StreetChecker– Expansion of Web mapping sites– Integration with critical business apps

SERUG 2008 19

Zoning Zoning GeodatabaseGeodatabase

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Web Mapping SitesWeb Mapping Sites

Set short-term goal to create 3 new sites per quarter10 sites currently in production– 12 ArcIMS map services– 88 layers being published

Sparked imagination– Can we make …?– Can you add … to the Web map?

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Virtual ToursVirtual Tours

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Traffic CamerasTraffic Cameras

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Web Mapping StatisticsWeb Mapping StatisticsInternal Map Services Internal Map Services -- 20072007

SERUG 2008 24

Web Mapping StatisticsWeb Mapping StatisticsPublic Map Service Public Map Service -- 20072007

SERUG 2008 25

GIS IntegrationGIS Integration

DOT – CarteGraph– Work orders, pavement mgmt, etc.– Maps, link to Cobb ETRANS

Countywide Imaging – OnBase– Search docs by clicking feature on map– When viewing docs, click to show map

SERUG 2008 26

CarteGraphCarteGraph CALLdirectorCALLdirector

Enter work request and determine jurisdiction and maintenance district from map

SERUG 2008 27

Present Day SystemPresent Day System

Databases– 15 databases

Applications– Focus on Web-based applications

Software– ArcGIS Desktop: 62 licenses– 3 ArcSDE, 1 ArcIMS, 2 ArcGIS Server

Users– ArcGIS Desktop: over 160 users– Web Mapping: 150,000 maps / month

GISSDE

ArcSDE 9.2

(AGS Ent/Bas)

GISSDEDEV

ArcSDE 9.2

(AGS Ent/Bas)

GISAPPS

(reverse proxy)

GISAPPDEV

ArcIMS 9.2GeoCortex 5.1

RouteServer

Nightly Synch

GIS Users

Various Appsaccess

database views

Public

Web / Server Based Sites

Cobb County

System at v9.2

Firewall

Work GroupServer

(AGS Wkg/Std) ArcGISServer

(AGS Ent/Adv)

Nightly SynchEdit

Edit / Publish

Production

External Web

Server

(DMZ)

Multiple Work Group

Servers

ArcGISServer

(AGS Ent/Std)

PublishCache

SERUG 2008 29

Looking AheadLooking Ahead

Increased integration with critical business applicationsAdditional eGDB developmentIncreased leverage of ArcGIS Server

SERUG 2008 30

GIS IntegrationGIS Integration

Community Development -- Accela– Suite of applications for:

• Permitting, Business License, etc.– Maps and proximity alerts

Water System -- Maximo– Asset management, work orders

• Water, sewer and storm water– Maps

SERUG 2008 31

eGDBeGDB DevelopmentDevelopment

Countywide Addressing Repository– Single source for county addresses– Based on proposed FGDC standard– Interfaces to business applications

Water System Geodatabase– Migration from MicroStation / Intergraph– Geometric networks– Linear referencing

SERUG 2008 32

Leveraging Leveraging ArcGISArcGIS ServerServer

Migrate current ArcIMS sitesDevelop new applications and Web services– MyCobbCounty website– Dashboards for department managers– Geoprocessing models

SERUG 2008 33

MyCobbCountyMyCobbCounty

Enter address and get information -- such as commissioner district, elected officials and nearest park or library

SERUG 2008 34

Ortho Cache IssueOrtho Cache Issue

SERUG 2008 35

QuestionsQuestions

Charles FailGIS Programmer/Analyst II

770-528-8717cfail@cobbcounty.org

Tim ScharffGIS Manager770-528-8703

tscharff@cobbcounty.org

The application of GIS technology is limited only by the imagination of those who use it.

-- Jack Dangermond