Function creates binary matrix, to be used in aspect_importance method. It
starts with a zero matrix. Then it replaces some zeros with ones. It either
randomly replaces one or two zeros per row. Or replace random number of zeros
per row - average number of replaced zeros can be controled by parameter f.
Function doesn't allow the returned matrix to have rows with only zeros.
Usage
get_sample(n, p, sample_method = c("default", "binom"), f = 2)