step-2

step-2.js

$(document).ready(function () {
    d3.json('data.json', function (data) {
        var ndx = crossfilter(data); // Tell Crossfilter what data we want to filter.
        //defaultDim is for the total # of defaulters ticker.
        var defaultDim = ndx.dimension(function (d) {
            return d['default payment next month'];
        });
        //genderDim filters based on gender. The function will iterate over the 30,000 records returning either Male, Female, or Unknown every time.
        // We can then use dc.js to tally those up.
        var genderDim = ndx.dimension(function (d) { //notice the parameter, since we told Crossfilter what our data is, we can just get it in our callbacks
            var sex = d['SEX'];
            if (sex === 1) {
                return 'Male';
            } else if (sex === 2) {
                return 'Female';
            } else {
                return 'Unknown';
            }
        });
        //marriageDim filters based on marriage status.
        var marriageDim = ndx.dimension(function (d) {
            var status = d['MARRIAGE'];
            if (status === 1) {
                return 'Married';
            } else if (status == 2) {
                return 'Single';
            } else if (status === 3) {
                return 'Others';
            } else {
                return 'Unknown';
            }
        });
        //ageDefaultersDim filters on age.
        var ageDefaultersDim = ndx.dimension(function (d) {
            return d['AGE'];
        });
        //limitDefaultersDim filters on total credit given to an individual.
        var limitDefaultersDim = ndx.dimension(function (d) {
            return d['LIMIT_BAL'];
        });

    });
});