Description Usage Arguments Details Value Author(s) References
Calculates the deterrence function used for the different gravity based models
1 2 | deterrence_function(cij, beta, type = "exponential", alpha = 4,
gamma = 1)
|
cij |
a matrix containing the cost matrix |
beta |
the distance decay factor |
type |
the family of deterrence function to use |
alpha |
shape parameter 1 for ariadne type deterrence function |
gamma |
shape parameter 2 for ariadne type deterrence function |
Power is generally used for simple gravity models, exponential and ariadne can be used for the Rihll-Wilson model.
alpha
and gamma
are only relevant for the ariadne type model and default to the values alpha=4 and gamma=1 like in Evans&Rivers 2017.
a matrix containing the deterrence function
Daniel Knitter knitter@geographie.uni-kiel.de
Martin Hinz martin.hinz@iaw.unibe.ch
Benedikt Grammer benedikt.grammer@univie.ac.at
Kai Radloff kai.radloff@hu-berlin.de
Loren V. Cowin Lcowin@gshdl.uni-kiel.de
Clara Filet clara.filet@gmail.com
Evans Tim S., Rivers Ray J., Was Thebes Necessary? Contingency in Spatial Modeling. Frontiers in Digital Humanities 4, 2017, https://doi.org/10.3389/fdigh.2017.00008
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.