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  • Last update: 5 years ago
  • Total downloads: 112
  • Operating system: Linux, Mac OS X, Win All, BSD, Solaris
  • Publisher: Sean Bryan (5 other programs)
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scripts default iconError Propagation Class (Scripts) Publisher's description

This class, called "meas" (meaning measurement with uncorrelated error), contains two elements

This class, called "meas" (meaning measurement with uncorrelated error), contains two elements. A "meas" can be created with the constructor function:

>> d = meas();

and values can be assigned to the two elements.

>> d.value = 1;
>> d.error = .3;

The values can also be displayed:

>> d
1 +/- 0.3

I overloaded the +,-,*,/,^,>,<,==,>=,<= operators to perform the error propagation for each of these operators. The comparison operators work to within 1-sigma. For example, (1.0 +/- .3) == (.9 +/- .3) would return "true".

In this early version, this only works for single numbers, and just for the operators listed above. In the future, I plan to overload many common functions (sin(x) and such...), and make support for matrices and arrays. Comments and changes are most welcome, especially since this is my first Matlab code in which I have made my own class.

Thanks to Kevin Murphy's site,
for helpful basic information on writing a class.

System Requirements:

MATLAB 7.4 (R2007a)
Program Release Status: New Release
Program Install Support: Install and Uninstall

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