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

From: Rainer M Krug <rkrug_at_sun.ac.za>
Date: Wed 30 Aug 2006 - 20:27:13 EST


Hi

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

-- 
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@sun.ac.za
      	Rainer@krugs.de

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Received on Wed Aug 30 20:28:23 2006

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