[R] density() with from, to or cut and comparrison of density()

Rainer M Krug rkrug at sun.ac.za
Wed Aug 30 12:27:13 CEST 2006


the function density() does normally integrate to one - I've checked it
and it works and I also read the previous threads.
But I realised that it does not integrate to one if I use from, to or cut.

My scenario: I simulated densities of a plants originating from an sseed
source at distance zero. Therefore the density of the plants will be
highest close to zero. Is there anything I can do to have this pattern?
If I use 'from' or 'cut', the resulting densities do not integrate to
one which I need as I want to compare different density curves.

Ny second question is concerning the bandwidth. An I correct in saying
that if I want to compare different density estimates that the bandwidth
should be the same for all of them?

Thanks in advance for your help,


Rainer M. Krug, Dipl. Phys. (Germany), MSc Conservation
Biology (UCT)

Department of Conservation Ecology and Entomology
University of Stellenbosch
Matieland 7602
South Africa

Tel:		+27 - (0)72 808 2975 (w)
Fax:		+27 - (0)21 808 3304
Cell:		+27 - (0)83 9479 042

email:	RKrug at sun.ac.za
      	Rainer at krugs.de

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