Geospatial W orld Forum 2014 May 8 th , 2014 - Geneva David Beni / - - PowerPoint PPT Presentation

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Geospatial W orld Forum 2014 May 8 th , 2014 - Geneva David Beni / Annick Deshayes - arx iT SA www.arxit.com GWF 2014 Geneva Geneva cadastral data cadastral data historization(4D) historization(4D) Outline Outline Introduction Context

SLIDE 1

Geospatial W

Forum 2014

May 8th, 2014 - Geneva

GWF 2014

David Beni / Annick Deshayes - arx iT SA

www.arxit.com

SLIDE 2

Geneva cadastral data historization(4D) Geneva cadastral data historization(4D)

Outline

Introduction Context Context Technical description

Use of temporal data

Feedback / Conclusion

GWF 2014

SLIDE 3

arx iT presentation Founded in 2001

Introduction

Company based in Geneva, Paris, Lyon Core business : provide a wide range of GIS services

Context Technical description Use of temporal data

Core business : provide a wide range of GIS services

The company is active in the following domains:

Set up SDI

Use of temporal data Feedback Conclusion

Set up SDI
Custom

GIS development (Desktop, Web and mobile)

Spatial data processing (open & big data)
Consulting / Expertise / Training

GWF 2014

SLIDE 4

Customer’s context

The customer = Official Survey Department of the Canton of Geneva (DMO)

Introduction

Canton of Geneva (DMO)

DMO is in charge to keep the cadastral data up to date

Context Technical description Use of temporal data

date To meet a legal requirement (Ogéo law), forcing the

historical description of geographical data ->

Use of temporal data Feedback Conclusion

historical description of geographical data ->

O decided to add a tem poral com ponent to its data

management / process

management / process The main goal is to

query and visualize the state

the cadastral data for any given date

GWF 2014

SLIDE 5

Customer’s context

1

st step

: analyze the possibilities provided by existing standard ESRI products used by DMO such as

Introduction

standard ESRI products used by DMO such as

ArcGIS.

Unfortunately, using these existing tools was not

Context Technical description Use of temporal data

Unfortunately, using these existing tools was not

sufficient enough to meet the client’s needs regarding it’s data management

2

nd step

: development of a prototype tool – based on

Use of temporal data Feedback Conclusion

2

nd step

: development of a prototype tool – based on ESRI technologies –capable of managing data

temporality

This proof of concept was a success, as it was

possible to visualize the evolution of geographical

bjects throughout tim

e and

space

GWF 2014

bjects throughout tim

e and

space

SLIDE 6

Customer’s approach 3

rd step : implementation of the final solution, in a

production environment

Introduction

production environment

This solution is composed of :

A temporal geodatabase

Context Technical description Use of temporal data

A temporal geodatabase
An ArcMap Add-In plugged to the editing tools
Quality control tools

Use of temporal data Feedback Conclusion

Quality control tools

GWF 2014

SLIDE 7

Temporal geodatabase

The concept : feature classes + temporal attributes, Event table Each

bject has a

lifetime

tracking its evolution

GWF 2014

Events used to log modifications

n the objects

statistics

SLIDE 8

ArcMap Add-In plugged to the editing tools

Data management workflow :

The ArcMap Add-In is seamlessly integrated with the initial process

GWF 2014

SLIDE 9

The Add-In user interface

Visualization of the changed objects

Logging an event for each object

Saving the

bjects into

the temporal database

GWF 2014

SLIDE 10

The Add-In user interface

4D in action !

Introduction Context Technical description Use of temporal data Use of temporal data Feedback Conclusion GWF 2014

SLIDE 11

Use of standard ArcMap tools Use the time slider to visualize the evolution of data

Introduction

4D in action !

Context Technical description Use of temporal data Use of temporal data Feedback Conclusion GWF 2014

SLIDE 12

Control tools using temporality Two monitoring and data query tools have been developed and deployed at DMO

Introduction

developed and deployed at DMO

1. Visualization of the modifications :
Highlights on the map all the updates made in the

Context Technical description Use of temporal data

Highlights on the map all the updates made in the

current session

Export them into a csv file

Use of temporal data Feedback Conclusion

Export them into a csv file

GWF 2014

SLIDE 13

Control tools using temporality

2. Visualization of the

temporal data :

Introduction

Query the Event table (attributes only)
Visualize the corresponding

geographical objects on the map

Context Technical description Use of temporal data

the map

Use of temporal data Feedback Conclusion GWF 2014

SLIDE 14

Feedbacks / Conclusion

The tem porality tool is used successfully for m

re than a

year

Introduction

year

All the data m anaged by DM O, 90 entity classes, are tim e-

enabled and :

Context Technical description Use of temporal data

enabled and :

Any change in the cadastral database is logged and

historized

The new process is fully integrated with the initial workflow ;

Use of temporal data Feedback Conclusion

The new process is fully integrated with the initial workflow ;

this new tool has a minor impact on the every day work of the DMO operators

GWF 2014

SLIDE 15

Feedbacks / Conclusion

DM O is a pioneer in cadastral data

historization

Introduction

The application is highly flexible: its principle can be

applied :

Context Technical description Use of temporal data

applied :

To other topics To other GIS clients (for instance QGIS)

Use of temporal data Feedback Conclusion

To other GIS clients (for instance QGIS)

The new version supports historization for 3D objects

Other departments are interested in deploying this tool for

their projects

GWF 2014