[R] Error in writeBin(object, con, size = 2)
Sven Garbade
garbade at psy.uni-muenchen.de
Mon Oct 7 15:23:54 CEST 2002
Hi all,
I wrote a function (in R batch mode) which reads binary data,
interpolates sometimes and wrote a new binary file of the same size as
the input file. Her is a bit of code:
while (length( head <- readBin(si, integer(), 64, size=2))) {
data <- readBin(si, integer(), head[5], size=2)
## now write head to new file
writeBin(head, so, size=2)
## if head[4] is 9 or 10, interpolate
if(head[4] == 9 | head[4] == 10)
## interpolate data
data <-int(data)
writeBin(data, so, size=2)
}
si and so are the binary in- and output connections, "int()"
interpolates between some data segments and returns a numeric vector
of the same length as the input vector.
However, if the data were interpolated, the execution stops with the
follwing error:
Error in writeBin(data, so, size = 2) : That size is unknown on this machine
Execution halted
This error only occured, if "int()" was called before
writeBin(). int() returns a numeric vector with integers.
With writeBin(data, so) everything works, but this gives the wrong
bytes per element in the byte stream.
Any suggestions?
Thanks, Sven
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