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# PWLINT: Piecewise Linear Integration (Scripts) 1.0

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## PWLINT: Piecewise Linear Integration (Scripts) Publisher's description

### Calculate the positive and negative area under a curve

PWLINT.m
Calculate the positive and negative area under a curve
using trapezoids, assuming a piecewise linear function

Requires insertrows:
http://www.mathworks.com/matlabcentral/fileexchange/9984

Inspired by this thread:
http://www.mathworks.com/matlabcentral/new...w_thread/252131

Usage:
[Apos, Aneg, Anet] = pwlint(x,y)
x: vector of independent variable
y: vector of dependent variable
Apos: area between y=0 and positive y values
Aneg: area between y=0 and negative y values
Anet: Apos+Aneg; equal to trapz(x,y)

See also TRAPZ, SUM

#### System Requirements:

MATLAB 7.12 (2011a)
Program Release Status: New Release
Program Install Support: Install and Uninstall

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