d Sav/ d WI

Question

0 个投票

Hi, How, I can create a code in matlab to calculate the slope at every point in the curve if I have experemnt data

Sav{0.47 0.532 0.588 0.662 0.736 0.772}

Wi{0.254 0.539 1.071 3.349 12.72 26.54} I want to calculate Fo= d Sav / d Wi

Thanks

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Walter Roberson 2012-4-2

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Answer 1

Andrei Bobrov 2012-4-2

0 个投票

sw = reshape([0.47 0.254 0.532 0.539 0.588 1.071 0.662 3.349 0.736 12.72 0.772 26.54 ],2,[])
dsw = diff(sw,1,2)
Fo = dsw(1,:)./ dsw(2,:)

OR

Fo = diff(Sav)./diff(Wi)

It does not give the same answer as in the paper the answer in the paper are

Hi, How, I can create a code in matlab to calculate the slope at every point in the curve if I have experemnt data

Sav{0.47 0.532 0.588 0.662 0.736 0.772}

Wi{0.254 0.539 1.071 3.349 12.72 26.54}

The relation between Sav in Y direction and Wi in X direction is a curve so I want to calculate the slope at every point.

I want to calculate Fo which is equal to

Fo= d Sav / d Wi

The answer in the paper for Fo are { 0.553 0.171 0.0875 0.0234 0.00536 0.00265}

Thanks