http://www.mathworks.com/help/techdoc/ref/cumtrapz.html

Quote :

"cumtrapz - Cumulative trapezoidal numerical integration Syntax Z = cumtrapz(Y) Z = cumtrapz(X,Y) Z = cumtrapz(X,Y,dim) or cumtrapz(Y,dim) Description Z = cumtrapz(Y) computes an approximation of the cumulative integral of Y via the trapezoidal method with unit spacing. To compute the integral with other than unit spacing, multiply Z by the spacing increment. Input Y can be complex. For vectors, cumtrapz(Y) is a vector containing the cumulative integral of Y. For matrices, cumtrapz(Y) is a matrix the same size as Y with the cumulative integral over each column. For multidimensional arrays, cumtrapz(Y) works across the first nonsingleton dimension. Z = cumtrapz(X,Y) computes the cumulative integral of Y with respect to X using trapezoidal integration. X and Y must be vectors of the same length, or X must be a column vector and Y an array whose first nonsingleton dimension is length(X). cumtrapz operates across this dimension. Inputs X and Y can be complex. If X is a column vector and Y an array whose first nonsingleton dimension is length(X), cumtrapz(X,Y) operates across this dimension. Z = cumtrapz(X,Y,dim) or cumtrapz(Y,dim) integrates across the dimension of Y specified by scalar dim. The length of X must be the same as size(Y,dim). Examples Example 1 Y = [0 1 2; 3 4 5]; cumtrapz(Y,1) ans = 0 0 0 1.5000 2.5000 3.5000 cumtrapz(Y,2) ans = 0 0.5000 2.0000 0 3.5000 8.0000 Example 2 This example uses two complex inputs: z = exp(1i*pi*(0:100)/100); ct = cumtrapz(z,1./z); ct(end) ans = 0.0000 + 3.1411i "

2/29/2012 8:32:33 AM

Could you bold out the good parts?

I'm Krallum and I approved this message

2/29/2012 9:04:55 AM

got 'em

2/29/2012 9:05:28 AM

thread was not what I expected

2/29/2012 9:07:37 AM

I thought this thread was about all your female relatives.

2/29/2012 12:24:53 PM