python - how to use numpy polyfit to force scatter points linear fit pass through zero? - 


x=np.asarray([1,2,4,5,7,8,9]) y=np.asarray([2,1,3,6,4,7,9])  m,b=np.polyfit(x,y,1)

i have scatter points , try linear fit (y = m*x + b, b = 0) numpy polyfit. there way force interception b 0? can have variance?

i googled , said np.linalg.lstsq may work don't know how manipulate it. , prefer np.polyfit. can work?

no. np.polyfit doesn't have method removing lower order terms. here's how np.linlg.lstsq:

m = np.linalg.lstsq(x.reshape(-1,1), y)[0][0] m  0.87916666666666654

this not same as:

np.mean(y/x)  0.98520408163265305

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