Description Usage Arguments Details Functions References
Compute the Mingling index for a given multitype point pattern.
1 2 3 |
X |
Multitype point pattern of class |
r |
Vector of sizes for neighbourhoods, e.g. |
target |
Default NULL. Calculate only for target type. If NULL computes for each type + mean over all types. |
ratio |
Default FALSE. If TRUE, scale the typewise values |
... |
Further parameters for the function |
ntype |
The original mingling index uses |
Extension of Mingling index introduced by Lewandowski\&Pommerening 1997. Measures the proportion of alien points in the neighbourhood of a specific type typical point of the pattern.
If no specific type is given, the function takes mean over all types. A typewise value is more useful, so they are also included.
The function minglingF
is the main calculation function. Uses function
segregationFun
.
The function mingling.index
is a shortcut to get a single value for
the pattern. Uses 4-nn graph by default, which is the original Mingling index
used by Lewandowski\&Pommerening 1997 and Graz 2004.
mingling.index
: Shortcut to 4-nearest neighbours index.
Graz: The behaviour of the species mingling index $m_{sp}$
in relation to species dominance and dispersion. Eur. J. forest research.
123:87-92, 2004.
Lewandowski, Pommerening: Zur Beschreibung der Waldstruktur - Erwartete und beobachtete Arten-Durchmischung. Forstwiss Centralbl, 116:129-139, 1997.
Rajala, Illian: A family of spatial biodiversity measures based on graphs, Env. Ecol. Stat. 2012
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