Adding a data generated by JavaScript to the first column of a CSV file

Question

How to add data to the first column of a CSV file containing 3 columns and 2000 rows? The data is an array containing sequential number that I have generated using JavaScript. I'm trying to load this external CSV file using D3js.

The JavaScript for the sequential number generation:

var time = [];
for (var i = 1; i != 2000; ++i){ 
time.push(i);
}

My CSV file should look something like this:

time,rate1,rate2,rate3
1,34,43,11
2,65,31,00
3,56,76,32
4,23,44,98
5,...
6,...
7,...
8,...

Thanks in advance...

Lars Kotthoff · Accepted Answer · 2013-11-27 13:35:36Z

1

You can add this when you go through the CSV data:

d3.csv("something.csv", function(error, data) {
  data.forEach(function(d, i) {
    d.time = time[i];
  });
});

answered Nov 27, 2013 at 13:35

Lars Kotthoff

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