Displaying 2 results from an estimated 2 matches for "rtrunc".
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2012 Mar 10
1
Draw values from multiple data sets as inputs to a Monte-Carlo function; then apply across entire matrix
...m the data tables
I read in above.
For example, 3.5 would be cell (i,j) in the Poultry MEAN density table;
0.108 would be cell (i,j) in the Poultry STDEV table; and 47 the single
estimate for cell (i,j) of the Wild bird density table.
Poultry <- mcstoc(rnorm, type="U", 3.5, 0.108, rtrunc=TRUE, linf=0)
Wild <- mcstoc(rtriang, type="U", min=0, mode=47, max=75)
Risk <- Poultry * Wild #this is the risk function the MC is applied
to
Questions:
1) How can I edit the Poultry and Wild variables above to read the data
values directly from the 3 input tables (i.e.,...
2012 Mar 21
0
runif error - maximum limit?
Dear all,
I am receiving the error below, I think because my n is exceeding the
allowable limit for a vector.
Can anyone confirm, and help with the following questions?
The function and error:
> stPte8 <- rtrunc(rnorm, nx * ny * nsimu, linf=0, mean=as.vector(PTmn),
> sd=as.vector(PTsd))
Error in runif(n, min = pinf, max = psup) : invalid arguments
My total n is calculated by:
nx=4053, ny=4848, nsimu=1000,
n = nx*ny*nsimu = 19,648,994,000
I believe the maximum size of a vector is 2^31-1 (2,147,483,647)...