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

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

3. CONNECT. TRANSFORM. AUTOMATE.
Getting ready for 2015

4. Western Canada DLS Grid
! ~1,500,000 km2 (or about 10 Englands)
! ~10,000,000 polygons

5. Western Canada DLS Grid

6. 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

7. The Problem With Roads

8. How To Eliminate Roads
! Cross the South and
West Road
Allowances

9. ! Snap vertices
South
! Snap vertices
West

10. Back and Forth Numbering

11. Correction Lines

12. Correction Lines

13. Meridian Lines

14. The Workspace

15. Back and Forth Numbering

16. Correction Lines

17. Feature Path

18. 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

19. How to validate manual work?
Use FME!

20. Great Scott! Holes Everywhere!

21. Multi-Step Process
! Add Sliver Remover to main workspace
! Re-evaluate whole process and split into sections
for performance

22. Coordinate Rounder

23. Roads are gone

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

25. Ready for 2015

26. Thank You!
! Questions?
! For more information:
! Tim Downing – tdowning@geologic.com
! geoLOGIC systems ltd
CONNECT. TRANSFORM. AUTOMATE.