search for: sdvemrg

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2010 Nov 23
2
How to do a stochastic model in R
...anged randomly according to their normal distribution (given the mean and standard deviation values) and got another mean value. And when x was 3 again, and every time until 20. Does anyone, know how to do it? ss <- 0.3 emrg <- 0.35 gf <- 0.22 spp <- 100 sr <- 0.52 SDVss <- 0.08 SDVemrg <- 0.05 SDVgf <- 0.04 SDVspp <- 22 SDVsr <- 0.1 data.frame <- matrix(0,20,7) data.frame data.frame[,1] <- 1:20 data.frame for(x in 1:20){ if(x==1){ data.frame[1,2] <- 50 data.frame[1,3] <- 18...