roads? where we’re going, we don’t need roads

CONNECT. TRANSFORM. AUTOMATE.

Roads? Where we’re going we don’t need roads. Tim Downing Manager, gDC Development

Agenda

!  “Roads” in Western Canada !  The problems with roads !  Using FME to remove roads !  Testing the process

CONNECT. TRANSFORM. AUTOMATE.

Getting ready for 2015

Western Canada DLS Grid

!  ~1,500,000 km2 (or about 10 Englands) !  ~10,000,000 polygons

Western Canada DLS Grid

Defintion: “Road Allowance”

!  20m or 30m separation between sections !  Surveyed sections from 1871 to 1880 all have

road allowances !  Surveyed sections after 1881 reduced by half the

number of East/West road allowances !  Not all road allowances have a constructed road

The Problem With Roads

How To Eliminate Roads

!  Cross the South and West Road Allowances

!  Snap vertices South

!  Snap vertices West

Back and Forth Numbering

Correction Lines

Correction Lines

Meridian Lines

The Workspace

Back and Forth Numbering

Correction Lines

Feature Path

First Pass

!  Meridian lines with variable distances and problems

!  Known areas missing grid !  Holes caused by misaligned vertices

!  Decision to use summer students to correct holes

How to validate manual work? Use FME!

Great Scott! Holes Everywhere!

Multi-Step Process

!  Add Sliver Remover to main workspace !  Re-evaluate whole process and split into sections

for performance

Coordinate Rounder

Roads are gone

Summary

!  Western Canada road allowances !  The difficulties of removing road allowances !  Using FME to remove roads !  Testing the result !  Fixing the process

Ready for 2015

Thank You!

!  Questions?

!  For more information: !  Tim Downing – tdowning@geologic.com !  geoLOGIC systems ltd

CONNECT. TRANSFORM. AUTOMATE.