[R] Problem loading .Rdata file

[Duncan Murdoch]

On 12-12-14 8:00 AM, ONKELINX, Thierry wrote:
> Dear all,
>
> I'm having troubles migrating a large matrix from one system to another.
>
> #system 1: Ubuntu 12.04, 64-bit, running R 2.15.2
> # do some simulations
> # save the simulations
>> save(Output, file = "Simulations.Rdata")
> #Output is a numeric matrix with 6 columns and about 2M rows.
>
> Use ftp to transfer the Simulations.Rdata file to system 2
>
> #system2: Windows XP, 32-bit running R 2.15.2
> #in a clean R session
>> load("Simulations.Rdata")
> Error: bad restore file magic number (file may be corrupted) -- no data loaded
> In addition: Warning message:
> file 'Simulations.Rdata' has magic number ''
>     Use of save versions prior to 2 is deprecated
>
> The load() functions works correct on system 1
>
> Any ideas how to solve this problem?

I suspect you really did get a corrupted transfer.  Try computing an md5 
checksum before and after the transfer, using tools::md5sum.

Duncan Murdoch

>
> Best regards,
>
> Thierry
>
>
> ir. Thierry Onkelinx
> Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest
> team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
> Kliniekstraat 25
> 1070 Anderlecht
> Belgium
> + 32 2 525 02 51
> + 32 54 43 61 85
> Thierry.Onkelinx at inbo.be
> www.inbo.be
>
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