Displaying 2 results from an estimated 2 matches for "blackoak".
2010 Apr 14
1
envelope in spatstat
...to be G(m1,m2)= sin(abs(m1-m2))^2.
According to the spatstat manual (p177), I may need to 'cook up' a specific
function, like this:
Kdif = function(X, ..., i) {
Kidot = Kdot(X, ..., i = i)
K = Kest(X, ...)
dif = eval.fv(Kidot - K)
return(dif)
}
E = envelope(lansing, Kdif, i='blackoak',
simulate=expression(rlabel(lansing)))
So how do I tell 'envelope' that I want to specify the mark correlation
test function ??
Many thanks in advance!
T
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Dept. of Maths and Stats, UWE and Ant Lab, Bristol
Room B79.
SoBS, Wood...
2007 Jul 06
5
Clustering nested data
Hi all,
I am interested in performing a cluster analysis on ecological data from
forests in Pennsylvania. I would like to develop definitions for forest
types (red maple forests, upland oak forests, etc.(AH AR in attached table))
based on measured attributes in each forest type. To do this, I would like
to 'draw clusters' around forest types based on information from various
tree