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Mission: To provide a uniform system of mapping for Ramsey County. Goal: To establish and maintain a coordinate controlled base for computerized mapping.

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Presentation on theme: "Mission: To provide a uniform system of mapping for Ramsey County. Goal: To establish and maintain a coordinate controlled base for computerized mapping."— Presentation transcript:

1 Mission: To provide a uniform system of mapping for Ramsey County. Goal: To establish and maintain a coordinate controlled base for computerized mapping. Ramsey County Land Records Mapping Modernization 1984

2 Records & Revenue Mapping Project Development Information Services Public Works

3 Development Responsibilities Information Services Computer Hardware Computer Hardware Computer Software System Networking Computer Software System Networking System Accounting System Accounting

4 Development Responsibilities Public Works Land Surveys (traditional & GPS) Land Surveys (traditional & GPS) Least Squares Adjustments Least Squares Adjustments PLSS Publications and Maintenance PLSS Publications and Maintenance SGR Control Skeletons SGR Control Skeletons Aerial Photography Aerial Photography Planimetric Features Planimetric Features

5 Development Responsibilities Property Records & Revenue Editing and Delivery of ½ Section Maps Editing and Delivery of ½ Section Maps Ultimap Software Master Level Ultimap Software Master Level Property Records Administration Property Records Administration

6 PLAT DOCUMENTS

7 1985 Ramsey County Land Records Modernization

8

9 Ramsey County Surveyor’s Office

10 Survey Equipment (198X)

11 Survey Traverse Network

12 Traverse and Network Adjustments

13 Ramsey County GPS Survey October 1985

14 Global Positioning System (GPS) n Used widely in the surveying and construction fields n A major time saver – no line of sight n Limitations include: tree cover, buildings, and data link n Weather does not impact

15 How it works n Measures distance by the time it takes a signal to get from satellite to the receiver n Use at least 4 satellites (can have as many as 15-20) to determine the users location

16 Ramsey County Control Points

17 GPS Quadrangle Daily Setups

18 Least Square Adjustments n U or M Fortran (Tom Wagemaker) n City of Mpls. Fortran (Brad Henry) n GPS Fixed, Assumed Float, Observed Angles and Observed Distances n Adjusted Float, Std. Deviation, Adj. Angles, Adj. Distances and RoP

19 Least Squares Today n Mostly observed GPS vectors n Star*Net, C Progamming Language, MicroSurvey Software Inc.

20 Ramsey County Published PLSS Corners

21 UltiMap Acquired from Hennepin County Enhanced from CARS program Developed in Fortran 77 Prgm. Lng. Apollo Hardware Domain Editor Token Ring Aegis, BSD 4.3, Sys5 Calcomp Plotters and Digitizing tables

22 UltiMap

23 Hierarchical Data Dictionary Revision, Alternate, Master Data Storage RCDMS Batch Processing, $loc, $exec SGR files con, tcon, dcon PLC, DXF Q*VIEW, Macros, Menus Proprietary Database

24 Ultimap System GBU n Good - Double Precision n Good - Apollo/HP multitasking, OS n Bad - Fortran 77 buggy – Divide by 0 n Bad - SGR files only edit 32,768 rec. n Bad – Proprietary objects leader lines n Ugly - Data Dictionary and Master, Alternate and Revision DB levels.

25 ESRI ArcInfo/ArcStorm n Sun SparcStation 20 RISC Server n Sun Solaris OS n Client Server connection from Pent. PC n Exceed Hummingbird X-Windows n Proprietary DB n Checkin/Checkout – Coverages n Feature Locking

26 ArcInfo ArcStorm

27 ArcInfo ArcStorm GBU n Good – Rock Solid Computer System and OS - NIC n Bad - Difficult to initially Setup and load data n Ugly - X-Windows and X-Authority difficult to initially configure

28 ESRI ArcSDE Enterprise DB Present n Intel Based Servers Multiprocessors n FlexLM license manager. n Node Locked - Single Use License n Concurrent – Floating Licenses n Uses relational RDBMS (DB2, Informix, Oracle, MS SQL)

29 ESRI ArcSDE Enterprise DB Present n Versioned DB n Reconcile and Post n Topology n Dirty areas n Custom tools for Spatial Adjustments n Single lines for parcels n Working on Pilot for Parcel Fabric DM

30 ArcSDE - GBU n Good - Supports large amounts of data and multiuser editing n Bad – Complex especially database compressions, keeping DB schema in order and in sync with other replications n Ugly – Topology Dirty Areas

31 Definition of GIS n A Collection of People, Computer Hardware and Computer Software for Capturing, Managing, Analyzing and Displaying Geographic Information.

32 GIS (Short Definition) n DATA n SYSTEM n MAP

33 GIS ARCHITECTURE GIS ARCHITECTURE

34 Ramsey County GIS Future n ESRI Parcel Data Model n Routing Street Centerlines n Statewide Street Centerline Model n NSAS (Urisa, NENA, DGDC) n Cloud (Web) Based Seamless Integrated Data

35 Parcel Fabric Data Model

36 Ramsey County Online Mapping

37 Questions? Curt Peterson Phone: PP: ftp://ftp.co.ramsey.mn.us/PubWorks/Outgoing/UofM ftp://ftp.co.ramsey.mn.us/PubWorks/Outgoing/UofM


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