generate = function(s, q, N, probFunc = 0, distFunc = 0, shape = 0)
{
if(!(is.numeric(s) &&
is.numeric(q) &&
is.numeric(N)))
{
cat('s is',class(s),', beta is',class(q),
', N is',class(N),'\n')
stop("all must be numeric")
}
if(s < 0)
{
cat('s is',s,'\n')
stop('must be non-negative')
}
if(q < 0 || q > 1)
{
cat('q is',q,'\n')
stop('must be in (0,1]')
}
if(N <=0)
{
cat('N is',N,'\n')
stop('N must be greater than zero')
}
#Safety net
if(s > 20)
{
cat("s too large\n")
tmp <- list()
return(tmp)
}
if(probFunc < 0 || probFunc > 8)
{
cat('probFunc is',probFunc,'\n')
stop('Valid values are:
waxman = 0,
clipped_waxman = 1,
waxman_transition_threshold =2,
threshold = 3,
constant = 4,
powerlaw = 5,
cauchy = 6,
exponential = 7,
maxentropy = 8')
}
if(distFunc < 0 || distFunc > 3)
{
cat('distFunc is',distFunc,'\n')
stop('Valid values are:
euclidean = 0,
manhattan = 1,
discrete = 2,
maxdist = 3.')
}
if(shape < 0 || shape > 1)
{
cat('shape is',shape,'\n')
stop('Valid values are:
square = 0,
circle = 1.')
}
tmp <- .Call("generate", c(s, q, N, probFunc, distFunc, shape))
return(graph.data.frame(tmp[1], FALSE, tmp[2]))
}
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