javascript - Sorting large CSV in D3.js -


i'm trying sort medium sized csv file (~3000 lines) using d3.js before passing visualization algorithm.

enter image description here

apparently though there's wrong code sorting seems applied in 'chunks' - see image above. i'm using d3 function: 

            dataset.sort(function(a,b) {               return d3.descending(a.counttotal, b.counttotal);           });

here's code: 

    // d3 code go here     // safe way load data       var dataset = [];     d3.csv("subjects.csv",             function(error, rows) {                 rows.foreach(function(r) {                     dataset.push({                         label: r.label,                         counttotal: r.counttotal                     })                 });                 generatevis();             });       function generatevis(){           var h = dataset.length * 100; //7000;         var w = 1000;           dataset.sort(function(a,b) {               return d3.descending(a.counttotal, b.counttotal);           });           var svg = d3.select("#svg-rect").append("svg")             .attr('id','mysvg')             .attr("width", w )             .attr("height", h);          var rects = svg.selectall("rect")                    .data(dataset)                    .enter()                    .append("rect");                     rects.attr("x", 0)             .attr("y", function(d, i){                 return * 10 + 10;             })             .attr("width", function(d){                 return d.counttotal;             })             .attr("height", 8)             .append("title")             .text(function (d){                 return d.label + " has " + d.counttotal + " articles ";             })       };

the csv file can found here: https://www.dropbox.com/s/3kwzwqbgts8z2lh/subjects.csv?dl=0

any appreciated!

the sort function sorting alphabetically. convert totals numbers first...

dataset.sort(function(a,b) {           return d3.descending(+a.counttotal, +b.counttotal);       });

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