How to calculate area of space in Matalb

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Tran Hoa 2018-10-10

评论： Tran Hoa 2018-10-14

Dear members, I want to calculate area of space created by 4 lines as figure. Could you help me to do that ? Thank you

Image Analyst 2018-10-10

Is line #1 the blue curve, or the black top of the axes box?

Tran Hoa 2018-10-11

Is the blue curve. Thank

Image Analyst 2018-10-11

Try stacking the numerical row vectors of the curves vertically using a semicolon then use min() to get the lower-most curve:

bottomCurve = min([curve1; curve2; curve3; curve4; curve5; curve6], 1);

Then sum from the left index to the right index, whatever they are.

areaUnderCurve = sum(bottomCurve(index1 : index2))

Tran Hoa 2018-10-14

Thank you

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