d3.json: “Uncaught TypeError: Cannot read property 'children' of undefined”

Question

I am trying out d3 as a tool for representing biological data.

I am trying to open the following example in my chrome browser so that I can understand how it works

Answer 1

Had the same exact error. The solution is pretty simple: You are not providing a JSON object array. You said your JSON begun as follows:

{ "name": "flare", "children": [ ...

Please change so change is begins as follows:

[{ "name": "flare", "children": [ ...}]

That way D3 will be able to locate the "first child"