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reallog

Natural logarithm for nonnegative real arrays

Syntax

Y = reallog(X)

Description

Y = reallog(X) returns the natural logarithm of each element in array X. Array X must contain only nonnegative real numbers. The size of Y is the same as the size of X.

Examples

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Natural Log of Matrix

Create a 4-by-4 matrix and compute the natural log of each element.

X = magic(4)
X =

    16     2     3    13
     5    11    10     8
     9     7     6    12
     4    14    15     1

Y = reallog(X)
Y =

    2.7726    0.6931    1.0986    2.5649
    1.6094    2.3979    2.3026    2.0794
    2.1972    1.9459    1.7918    2.4849
    1.3863    2.6391    2.7081         0

See Also

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Introduced before R2006a

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