Roads? Where We’re Going, We Don’t Need Roads
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CONNECT. TRANSFORM. AUTOMATE. Roads? Where we’re going we don’t need roads. Tim Downing Manager, gDC Development
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Transcript of 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 – [email protected] ! geoLOGIC systems ltd
CONNECT. TRANSFORM. AUTOMATE.
