pendulumVelocity.cs

using UnityEngine;
using System.Collections.Generic;

public class pendulumVelocity : MonoBehaviour
{

        List<float> list = new List<float> ();
        public int numToGraph = 128;
        public Transform bar;
        public Transform[] bars;
        public Transform barContainer;
        // Use this for initialization
        void Awake ()
        {
                bars = new Transform[numToGraph];
                createGraph ();
        //Screen.lockCursor = true;
    
        }
    
        // Update is called once per frame
        void FixedUpdate ()
        {
                float velocityMag = rigidbody.velocity.magnitude; 
                graphVelocity (velocityMag);

        }

        void graphVelocity (float velocity)
        {


                if (list.Count > numToGraph) {
                        //list.Remove(0);
                        list.RemoveAt (0);
                }
                list.Add (velocity);
                
                printList (list);

        }

        void printList (List<float> list)
        {


                for (int i = 0; i < numToGraph; i++) {
                        //double h = (double)(list[i]);
                        float height = list [i];
                        bars [i].localScale = new Vector3 (1, height, 1);
                }
        }

        void createGraph ()
        {
                for (int i = 0; i < numToGraph; i++) {
            Vector3 pos = barContainer.transform.position;
            pos.x +=i;
                        bars [i] = Instantiate (bar, pos, Quaternion.identity) as Transform;
                        bars [i].parent = barContainer;
                        list.Add (0);
                }
        barContainer.transform.localScale = new Vector3 (2f, .48f, .12f);

        }
}