Validating Linear Reference EventsHarry Zhu

Francisco Perez

Agenda

• Linear Referencing

• What is Data Reviewer

• Invalid Events Check

• Reviewer checks supporting Linear Referencing

• Event on Event Check

• Known Limitations

• Road Ahead

• Where to learn more..

Validating Linear Reference EventsLinear Referencing

What is Linear Referencing?

ArcGIS Data Reviewer

Automate, simplify, standardize and unify workflows to improve data quality

Increase transparency

Lower data management costs

Streamline quality control workflows

Implement repeatable processes

Reduce risk in decision-making

Validating Linear Reference Events

Invalid Events

Industry

• Roadway Management

• Pipeline Management

ArcGIS DesktopArcGIS Pro

• Orphan Events

• Invalid Measure

Values

• Event Gaps

• Event Overlaps

Invalid Events (Error Scenarios)Orphans

Route0 10

0

Event does not have an

associated route

Speed Limit EventRoute

Events

Error

Geometry

(R1 - routeSourceFC)

LEGEND

10

?

ArcGIS Desktop

ArcGIS Pro

Invalid Events (Error Scenarios)Invalid Measures Invalid Event Error Scenarios

Route0 10

0

Event greater than maximum

measure

Speed Limit Event

Route

Events

Error

Geometry

(R1 - routeSourceFC, ObjectID - OID) 15

LEGEND

Events spanning one route

Invalid Events (Error Scenarios) Gaps

Route0 10

0 4 6 10

Event 10

Gap between measure 4 to 6

Event 11Route

Events

Error

Geometry (R1 - routeSourceFC, ObjectID - OID)

LEGEND

Gap Error Scenarios

Events spanning multiple routes

Events spanning one route

Invalid EventsOverlaps

0 10

75 10

55 MPH

Overlap between measure 5 to 7

70 MPH

(R1 - routeSourceFC, ObjectID – OID, Event

OIDs)

Route

Events

Error

Geometry

0

Overlap Error Scenarios

Route

Events spanning one route

Events spanning multiple routes

Harry Zhu

Invalid Events

Demo

Available checks to support Linear Referencing

- Monotonicity

- Cutbacks

- Geometry and Geometry

- Evaluate Polyline

- Non-Linear Segment

- Duplicate Geometry

- Invalid Geometry

- Multipart Line Check

- Domain

- Execute SQL

Harry Zhu

Monotonicity

Demo

Validating Linear Reference Events

Event on Event Check

Industries

• Roadway Management

• Pipeline Management

ArcGIS Pro

• Invalid

Combination of

Events

Harry Zhu

Event on Event

Demo

Known Limitations

• Invalid Events

- No Support for Route Dominance

(Roadway Management)

- No support for tables

• Event on Event

- Copy & Paste of query

expressions not available

Validating Linear Reference Events

– Road Ahead

- Support of Service based model

platform (Validation Rules)

Future Releases

See Us Here

Thursday

ArcGIS Data Reviewer: Advanced Data Validation Room 30 E 08:30 am - 09:30 am

Data Reviewer

Info

Want to learn more?

• Data Reviewer templates

- Local government

- Topographic mapping

- Utilities

- Electric

- Gas

- Water

- Water resources

• Based on Esri industry models

• Use as starting point

ArcGIS Data Reviewer: An Introduction

solutions.arcgis.com

Want to learn more?

• Documentation

- Desktop desktop.arcgis.com

Want to learn more?

• Documentation

- Desktop

- Server

enterprise.arcgis.com

Want to learn more?

• Documentation

- Desktop

- Server

• Training

http://esriurl.com/15503

Want to learn more?

• Documentation

- Desktop

- Server

• Training

• GeoNet Community

http://esriurl.com/15504

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