logb

Version 1.2.0.1 (1,56 ko) par Brett Shoelson
Calculate the log of a number/matrix using a user-specified base.
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Mise à jour 1 sept. 2016

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FUNCTION Y = LOGB(X,B)
logb: Calculates the logarithm of x to user-specified base b.

USAGE: y = logb(x,b)

(A trivial but useful function for arbitrary-base log calculations.)

Arguments:
Y: the base 'b' logarithm of input x
B: The base of the logarithmic calculation (default, e). Note that if B is non-scalar, it must be the same size as X. In that case, the log transformation will be element-by-element.

Examples:
1) To calculate the base 5 logarithm of 3:
y = logb(3,5)

2) To calculate element-wise the log of a non-scalar input using different bases:
y = logb(magic(3),[1 2 3; 4 5 6; 7 8 9]);

See also: log, log10, log2

Citation pour cette source

Brett Shoelson (2024). logb (https://www.mathworks.com/matlabcentral/fileexchange/14866-logb), MATLAB Central File Exchange. Récupéré le .

Compatibilité avec les versions de MATLAB
Créé avec R2007a
Compatible avec toutes les versions
Plateformes compatibles
Windows macOS Linux
Catégories
En savoir plus sur Log Plots dans Help Center et MATLAB Answers
Remerciements

A inspiré : Order of magnitude of number

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Version Publié le Notes de version
1.2.0.1

Updated license
1.2.0.0

Updated M file and license text file copyright to The MathWorks, Inc.

1.1.0.0

added copyright
1.0.0.0

Addresses some good-programming-practices suggestions made by John D'Errico. Better description, help, error checking.