How to create a histogram to count specific matrix element pairs?

I have a 100x2 matrix that corresponds to a set of demographic data about a sample population. The first column contains either one of two possible values (1 or 2, to represent male/female genders), and the second column contains one of five possible values (to represent five income brackets). Each row represents the demographic characteristics of one person in my 100-person population. I understand how to make two histograms that each represent either the distribution of gender or the distribution of income, but I cannot seem to figure out how to make a histogram that counts the number of females ("2") with a particular income. How do I configure my histogram to consider two elements at once?

Answer 1

[Image Analyst]

Try this:

men = data(:,1) == 1
menCounts = histc(data(men, 2), 1:5)
women = data(:,1) == 2
womenCounts = histc(data(women, 2), 1:5)