fastHadamard: Compute fast Hadamard-transform of vector
In rje42/rje: Miscellaneous Useful Functions for Statistics
fastHadamard R Documentation
Compute fast Hadamard-transform of vector
Description
Passes vector through Hadamard orthogonal design matrix. Also known
as the Fast Walsh-Hadamard transform.
Usage
fastHadamard(x, pad = FALSE)
Arguments
x
vector of values to be transformed
pad
optional logical asking whether vector not of length 2^k should be
padded with zeroes
Details
This is equivalent to multiplying by designMatrix(log2(length(x)))
but should run much faster
Value
A vector of the same length as x
Author(s)
Robin Evans
See Also
designMatrix, subsetMatrix.
Examples
fastHadamard(1:8)
fastHadamard(1:5, pad=TRUE)
rje42/rje documentation built on April 3, 2024, 11:08 p.m.
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| fastHadamard | R Documentation |
Compute fast Hadamard-transform of vector
Description
Passes vector through Hadamard orthogonal design matrix. Also known as the Fast Walsh-Hadamard transform.
Usage
fastHadamard(x, pad = FALSE)
Arguments
x |
vector of values to be transformed |
pad |
optional logical asking whether vector not of length |
Details
This is equivalent to multiplying by designMatrix(log2(length(x)))
but should run much faster
Value
A vector of the same length as x
Author(s)
Robin Evans
See Also
designMatrix, subsetMatrix.
Examples
fastHadamard(1:8)
fastHadamard(1:5, pad=TRUE)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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