Plots data points and the fitting polynomial using Python，plotspolynomial,''' plotPoly

Plots data points and the fitting polynomial using Python，plotspolynomial,''' plotPoly

''' plotPoly(xData,yData,coeff)    Plots data points and the fitting    polynomial defined by its coefficient    array {coeff} = {a0, a1. ...}'''    from numpy import zeros,arangefrom xyPlot import *def plotPoly(xData,yData,coeff):    m = len(coeff)    x1 = min(xData)    x2 = max(xData)    dx = (x2 - x1)/20.0       x = arange(x1,x2 + dx/10.0,dx)    y = zeros((len(x)))*1.0    for i in range(m):        y = y + coeff[i]*x**i    xyPlot(xData,yData,'no',x,y,'ln')