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MFworks Tutorial – 05 Cost surface

Usually, to generate a cost-of passage surface, several variables will be collapsed into one layer. These variables might be road class, average speed, traffic density, and congestion during specific time of day or other factors that contribute to the overall cost variable. The cost-of-passage surface can be defined by a variety of measurement units: time, fuel consumption, money or other possible cost units, for which the least cost passage is to be determined.

Using average speed and time as a means of inferring cost-of-passage is among the most common approach in network analysis, since it is easy to use and calculate. However, “least cost” does not always need to be “least time”; it may just as well be least fuel,

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MFworks Tutorial – 06 Travel cost – path length

To determine the actual length of a path through a number of cells the Incremental Length operation is used. Incremental Length works similar to Incremental Linkage to the extent that Incremental Linkage is used implicitly to determine the linkage, from which the length is inferred. Incremental Length then applies the factor by which the cell resolution has to be multiplied to yield the length of the linear features in any cell.

Incremental Length cell values indicate factor for calculating length of linear features. © Thinkspace

It should be noted that Incremental Length calculates the factor for inferring the total length of all linear features in any cell.

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