index.py

import sqlite3 as lite
import sys
import matplotlib
import pylab
import numpy as np
import matplotlib.pyplot as plt
/* 
  code to populate array here
*/
#x is an array of integers, and y is an array of floats
plt.plot(x,y)
xcoords = np.array(x)
ycoords = np.array(y)
fit = np.polyfit(xcoords, ycoords, -1)
plt.show()
/*
  I get an error when I run this saying
  Traceback (most recent call last):
    File "percent.py", line 26, in <module>
      fit = np.polyfit(xcoords, ycoords, -1)
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/numpy/lib/polynomial.py", line 542, in polyfit
      x = NX.asarray(x) + 0.0
  TypeError: unsupported operand type(s) for +: 'numpy.ndarray' and 'float'
*/