dimple-js/src/methods/getUniqueValues.js

Dimple is an object-oriented API allowing you to create flexible axis-based charts using [d3.js](http://d3js.org "d3.js").

    // Copyright: 2015 AlignAlytics
    // License: "https://github.com/PMSI-AlignAlytics/dimple/blob/master/MIT-LICENSE.txt"
    // Source: /src/methods/getUniqueValues.js
    // Help: http://github.com/PMSI-AlignAlytics/dimple/wiki/dimple#wiki-getUniqueValues
    dimple.getUniqueValues = function (data, fields) {
        var returnlist = [];
        // Put single values into single value arrays
        if (fields !== null && fields !== undefined) {
            fields = [].concat(fields);
            // Iterate every row in the data
            data.forEach(function (d) {
                // Handle multiple category values by iterating the fields in the row and concatonate the values
                var field = "";
                fields.forEach(function (f, i) {
                    if (i > 0) {
                        field += "/";
                    }
                    field += d[f];
                }, this);
                // If the field was not found, add it to the end of the categories array
                if (returnlist.indexOf(field) === -1) {
                    returnlist.push(field);
                }
            }, this);
        }
        return returnlist;
    };