oh brother -- so now I've got to deal w/ Apple...
okay thanks.
here's where I am.
I've downloaded matplotlib, numpy, python 2.7.3, xcode and macports to
simply plot this oh-so-simple code!
Which is:
Curve fitting with python and pylab
#import the lib
from pylab import *
# assuming this data set
t = (0,5,10,15,20,25,30,35,40,50)
V = (1,7,14,15,16,22,25,27,28,30)
#show the data
plot(t, v, linewidth=2.0)
#assume an order
N = ?
#find the coefficient of the polynomial
coeffs = polyfit(t,v,N)
#get the polynomial output for the input
best = polyval(coeffs, t)
#print the coefficients
print(coeffs)
I have written it like this in python 2.6:
import os,sys
import numpy
#import pylab
t = (0,5,10,15,20,25,30,35,40,50)
V = (1,7,14,15,16,22,25,27,28,30)
#scipy.plot(t,v,linewidth=2.0)
n = 4
coeffs = numpy.polyfit(t,V,n)
best = numpy.polyval(coeffs,t)
print coeffs
print best
and when I run the program, I get this:
[ -1.68165168e-05 1.71262071e-03 -6.39152514e-02 1.59163337e+00
1.04578755e+00]
[ 1.04578755 7.60964036 12.11505162 15.46811522 18.32267732
21.08033633 23.89044289 26.6500999 29.0041625 29.81368631]
when I run in 2.7.3 it looks like this:
import os,sys
import numpy as np
import pylab
t = (0,5,10,15,20,25,30,35,40,50)
V = (1,7,14,15,16,22,25,27,28,30)
#scipy.plot(t,v,linewidth=2.0)
n = 4
coeffs = numpy.polyfit(t,V,n)
best = numpy.polyval(coeffs,t)
print coeffs
print best
And my error msg is this:
ImportError: No module named numpy
any ideas?
What I'm looking for is a visual.
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