Blog Archives

MFworks Tutorial – 03 Incremental Linkage

This operation infers the lineal characteristic of raster cells, by equating consecutive locations with a set of straight lines between them (Figure 1-3). Based on its relations with neighboring cells that have the same attribute value, each cell is given a linkage value indicating how it is linked to other cells.

Incremental Linkage, cell value infers the linear structure it represents.
© Thinkspace

By assigning a value to each cell equivalent to the linear feature it represents it is possible to create a network similar to a road network. The smaller the cell resolution, the better the real-world road network will be approximated by this procedure.

Read more

Posted in mfworks
Tags: , , ,

MFworks Tutorial – 04 Directional Identifier

The second step to creating a road network in raster GIS is to impose constraints on the flow that can take place from cell to cell. The value assigned to the centre cell in a 3×3 window indicates the directions the flow can take in and or out of this cell. Figure 1-5 shows how a cell value of 10 is inferred from flow in direction 8 and 2.


Tomlin’s directional identifiers: Cell values indicate possible flow direction in or out of cell

The directional identifiers that are to be assigned to any given cell in a road network can be directly inferred from the Incremental Linkage values,

Read more

Posted in mfworks
Tags: , , ,

MFworks Tutorial – 10 Deriving Linkage

linkage = IncrementalLinkage network;

The Linkage operation assigns values indicating how cells are linked together.

MFworks – step by step

Read more

Posted in mfworks
Tags: , ,

ARTICLES and PAPERS
Risk Disablers
My latest acquaintance in supply chain risk research methodology is developing  drivers and dependan[...]
Supply Chain Risk Management Research
What are the current gaps that waiting to be closed in supply chain risk management research? Here i[...]
BOOKS and BOOK CHAPTERS
Book Review: The Full Costs and Benefits of Transportation
This book, The Full Costs and Benefits of Transportation: Contributions to Theory, Method and Measur[...]
Understanding risks in Virtual Enterprise Networks
Today's unstable and highly competitive business environment has created a shift in how enterprises [...]
REPORTS and WHITEPAPERS
America’s Crumbling Infrastructure
My daily morning routine includes a cup of coffee while watching the World Business Report on BBC Wo[...]
Are roads more important than computers?
Critical Infrastructure. Which is more important - or 'critical' - road networks or computers? What [...]
from HERE and THERE
Operational Excellence - or not
Operational Excellence or OpEx for short, what does that imply and why should you care about it? Wel[...]
Thanks to Somali pirates no Santa is coming this year?
In a previous article, 2 weeks ago, I voiced my opinion on whether Somali Pirates can shut down Euro[...]