example from class, making a single bar for a bar chart of earthquake magnitudes

barchart.js

#pragma strict

import SimpleJSON;

public var min = 0;
public var max = 2;

function Start ()
    {
    var datastring = System.IO.File.ReadAllText("q.json");
    var data = JSON.Parse(datastring);
    var i : int;
    var mag : float;
    var quantity : int = 0;
    for (i=0; i < data["metadata"]["count"].AsInt; i++)
        {
        mag = data["features"][i]["properties"]["mag"].AsFloat;
        if ((mag >= min) && (mag < max))
        	quantity = quantity + 1;
        }
    Debug.Log('quantity = ' + quantity);
    quantity = quantity/10.0;  // scale it down a bit to fit in the view better; this will depend on how many data points you have
    transform.localScale = Vector3(1, quantity, 1);
    transform.Translate(Vector3(0, quantity/2.0, 0));
    }