JavaScript: an array of objects contained within another array of objects

Here is an example dataset for reference: 

var info = [
    {row: 0, col: 0, value: [{x: 1, y: 19}, {x: 2, y: 20}]},
    {row: 0, col: 1, value: [{x: 1, y: 24}, {x: 2, y: 27}]},
    {row: 1, col: 1, value: [{x: 1, y: 31}, {x: 2, y: 26}]},
    {row: 1, col: 2, value: [{x: 1, y: 29}, {x: 2, y: 19}]},
]

I'm struggling to set the x-domain properly.

var x1 = d3.scale.ordinal()
        .domain(info.map(function(d) { return d.value.x; }))
        .rangeRoundBands([0, chartW], 0.1);

This section is causing an error:

 .domain(info.map(function(d) { return d.value.x; }))

Any suggestions on how I can iterate through the inner array of values object?

Appreciate any help you can provide!

javascriptarraysd3.js

Answer №1

To properly structure your code, you must include two levels of nested iterations:

.range([
  d3.min(data, function(d) { return d3.min(d.values, function(e) { return e.x; }); }),
  d3.max(data, function(d) { return d3.max(d.values, function(e) { return e.x; }); })
  ]);

Apply the same logic for the y values.

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