I solved this in two ways:
1. ** was necessary to raise (-dummy + 1) to the power of B. ^ doesn't
work here, for some reason.
2. I needed to use as.complex which greatly simplified my code and
produces the correct response. (I had to revisit math that I had not used
in many years.)
W -
warmstron1 wrote:
I solved this in two ways:
1. ** was necessary to raise (-dummy + 1) to the power of B. ^
doesn't work here, for some reason.
...
Using which version R on which platform?
Most strange. The help page for Arithmetic operators clearly states in a
Note that ** is
R 2.11.1 on Mac OS X. I didn't see the Note.
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I am trying to create a set of wavelets in frequency space--namely Cauchy
wavelets for an intensity analysis (von Tscharner, 2000). The wavelets are
defined by the following formula:
[(f/cf)^(cf*scale)]*[e^((-f/cf)+1)^(cf*scale)]
where *f *is frequency of length *n*, *cf* is center frequency
The problem arises in the computation of U where (-dummy+1) turns negative
(the eighth and higher index values of dummy). You raise a negative number
to a non-integer power, for example, (-pi)^exp(1), which fails because you
would not be able to tell, which sign the resulting number should have.
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