Hello, All:
Do you know of any capability to substitute more then one byte in
an object of class Raw?
Consider the following:
> let4 <- paste(letters[1:4], collapse='')
> (let4Raw <- charToRaw(let4))
[1] 61 62 63 64
> (let. <- sub('bc', '--', let4Raw))
[1] "61" "62" "63" "64"
> # no substitution
> (bc <- charToRaw('bc'))
[1] 62 63
> (ef <- charToRaw('ef'))
[1] 65 66
> (let. <- sub(bc, ef, let4Raw))
[1] "61" "65" "63" "64"
Warning messages:
1: In sub(bc, ef, let4Raw) :
argument 'pattern' has length > 1 and only the first element will be used
2: In sub(bc, ef, let4Raw) :
argument 'replacement' has length > 1 and only the first element will
be used
In this example, "b" was replaced by "e", but "bc" was not
replaced by "ef"? Do you know of any function to do this?
I ask, because I need it. I've written such a function, subRaw
for my own use. If I don't hear that another exists, I plan to add the
one I've written to the oro.dicom package.
Thanks,
Spencer
> sessionInfo()
R version 2.15.1 (2012-06-22)
Platform: x86_64-pc-mingw32/x64 (64-bit)
locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
--
Spencer Graves, PE, PhD
President and Chief Technology Officer
Structure Inspection and Monitoring, Inc.
751 Emerson Ct.
San José, CA 95126
ph: 408-655-4567
web: www.structuremonitoring.com
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