Function 'loglin' throws an error when argument 'margin' consists of a single element of length one. An example:
> loglin(HairEyeColor, margin = list(1), param = TRUE)
produces error message
"Error in dyadic[i - 1, ] : incorrect number of dimensions"
The error is caused by the line
dyadic <- dyadic[order(rowSums(dyadic)), ]
This line coerces 'dyadic' from a matrix to a vector if the original 'margin' argument consists of a single element of length 1, since in this case 'dyadic' will only have one column. If 'dyadic' is coerced to a vector, then the later statement
vars <- which(dyadic[i - 1, ] > 0)
will fail because it assumes that 'dyadic' is a matrix.
Adding a 'drop = FALSE' argument to the earlier line solves the problem:
dyadic <- dyadic[order(rowSums(dyadic)), , drop = FALSE]