2D trapezoidal rule

Version 1.8.0.0 (2.26 KB) by Mohammed Sadeq Al-Rawi
Calculates a double integral using trapezoidal rule.
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Updated 7 Mar 2013

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This is a very simple program that makes use of Matlab's trapz (single integral). It has the benefit that it can be used to integrate over vectors x, y, and the function f(x,y), rather than on lower and upper limits. It can also be used with nonuniform spacing at the input vectors.

Example of nonuniform spacing:
x=[0,.1,.3,.45,.6,.8,.99,1]
y=[0,.05,.1,.2,.7,.57,.92,1]

Cite As

Mohammed Sadeq Al-Rawi (2024). 2D trapezoidal rule (https://www.mathworks.com/matlabcentral/fileexchange/40631-2d-trapezoidal-rule), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R14SP3
Compatible with any release
Platform Compatibility
Windows macOS Linux
Categories
Find more on Thermodynamics & Statistical Physics in Help Center and MATLAB Answers
Acknowledgements

Inspired: 3D Trapezoidal Rule

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Version Published Release Notes
1.8.0.0

Considering the suggestion
% Richard Crozier http://www.mathworks.com/matlabcentral/fileexchange/authors/34660

Thanks Richard :)
1.7.0.0

A simple correction to the example.
1.6.0.0

Modification so that the input matrix is MxN rather than NxN.
1.5.0.0

Adding one extra tag, keyword.
1.4.0.0

Adding one line to the code.
1.3.0.0

Description change.
1.2.0.0

Doing corrections to the comments.
1.1.0.0

Correcting the description.

1.0.0.0