histc.RdHistogram-like counting.
histc(x, edges)n = histc(x,edges) counts the number of values in vector x
that fall between the elements in the edges vector (which must
contain monotonically nondecreasing values).
n is a length(edges) vector containing these counts.
If x is a matrix then cnt and bin are matrices too, and
for (j in (1:n)) cnt[k,j] <- sum(bin[, j] == k)
returns a list with components cnt and bin.
n(k) counts the number of values in x that lie between
edges(k) <= x(i) < edges(k+1). The last counts any values of x
that match edges(n). Values outside the values in edges are not
counted. Use -Inf and Inf in edges to include all values.
bin[i] returns k if edges(k) <= x(i) < edges(k+1),
and 0 if x[i] lies outside the grid.