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Subject: numerical integration from data in cylindrical coordinates From: Neal Lafferty Date: 6 Oct, 2010 17:45:26 Message: 1 of 6 
I have a 2d array of data 402 x 402 in the shape of (approximately) an airy disk that I need like to take the cumulative integral of. The data has radial symmetry, and I would like to plot the cumulative integral with respect to radius. cumtrapz only handles 1 dimension of integration at a time, and it is in cartesian coordinates. 
Subject: numerical integration from data in cylindrical coordinates From: Roger Stafford Date: 6 Oct, 2010 20:12:20 Message: 2 of 6 
"Neal Lafferty" <nxl7930@rit.edu> wrote in message <i8icjm$l55$1@fred.mathworks.com>... 
Subject: numerical integration from data in cylindrical coordinates From: Roger Stafford Date: 6 Oct, 2010 20:33:38 Message: 3 of 6 
"Roger Stafford" <ellieandrogerxyzzy@mindspring.com.invalid> wrote in message <i8il74$ro0$1@fred.mathworks.com>... 
Subject: numerical integration from data in cylindrical coordinates From: Neal Lafferty Date: 7 Oct, 2010 13:16:03 Message: 4 of 6 
> I failed to read your subject title carefully. Apparently your array of points correspond to radius r and distance z cylindrical coordinates, and you are attempted to find the numerical triple integral of some quantity that is constant with respect to theta, and which would therefore require only an appropriate double integration. Is that correct? 
Subject: numerical integration from data in cylindrical coordinates From: Neal Lafferty Date: 19 Oct, 2010 02:40:05 Message: 5 of 6 
I was able to solve my problem in a satisfactory way. I wanted to post it in case someone else is searching for a solution to this problem. 
Subject: numerical integration from data in cylindrical coordinates From: victoriacurto1@gmail... Date: 29 Jan, 2014 18:25:57 Message: 6 of 6 
Neal, 
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