Hi
I used write() the other day to save some results.
It seems that write() does not record the full precision of
the objects being written:
> write(pi,file="~/f",ncolumns=1)
> pi.saved <- scan("~/f")
Read 1 item
> dput(pi)
3.14159265358979
> dput(pi.saved)
3.141593
> pi-pi.saved
[1] -3.464102e-07
>
This difficulty was particularly difficult to find because pi.saved
*looks*
the same as pi.
What's going on here?
> R.Version()
$platform
[1] "powerpc-apple-darwin8.7.0"
$arch
[1] "powerpc"
$os
[1] "darwin8.7.0"
$system
[1] "powerpc, darwin8.7.0"
$status
[1] ""
$major
[1] "2"
$minor
[1] "4.0"
$year
[1] "2006"
$month
[1] "10"
$day
[1] "03"
$`svn rev`
[1] "39566"
$language
[1] "R"
$version.string
[1] "R version 2.4.0 (2006-10-03)"
--
Robin Hankin
Uncertainty Analyst
National Oceanography Centre, Southampton
European Way, Southampton SO14 3ZH, UK
tel 023-8059-7743
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