R help - Apr 2002 - restoring .RData with older version of R

Hi,

I am working at a research institute and I am using R on different
machines, but for the same data in the same directory.
Unfortunately, there are also different versions of R running on these
machines (1.3.0 and 1.4.1).
The problem is that I cannot get R 1.3.0 running with the .RData file
created by 1.4.1.
The same problem arises with objects saved (routine save) in the
R-format under 1.4.1 when I want to load them in 1.3.0.

The reason for these 2 versions is that I received now another computer
with version 1.3.0 having a fast processor and a lot of memory, i.e. I
want to make the computations there. In former times, I had a slow
computer and had to login to another computer. That one is not so fast
as my new computer and has not so much memory, however, there is version
1.4.1 installed.

Is there any possibility to work with both versions on the same data?

Thank you very much,
Gerald Kroisandt


=============================================|  Dr. Gerald Kroisandt            
|
|  Fraunhofer Institut                       |
|   Techno- und Wirtschaftsmathematik (ITWM) |
|  Gottlieb-Daimler-Str., Geb. 49/311   |
|                                            |
|  67663 Kaiserslautern                      |
|  Germany                                   |
=============================================|  Phone:     +49-(0)631-205-4189  
|
|  Fax:       +49-(0)631-205-4139            |
|  E-Mail:    kroisandt at itwm.fhg.de          |
|  Internet:  http://www.itwm.fhg.de         |
=============================================
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at
stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._

On Tue, 9 Apr 2002, G. Kroisandt wrote:
> Hi,
>
> I am working at a research institute and I am using R on different
> machines, but for the same data in the same directory.
> Unfortunately, there are also different versions of R running on these
> machines (1.3.0 and 1.4.1).
> The problem is that I cannot get R 1.3.0 running with the .RData file
> created by 1.4.1.
> The same problem arises with objects saved (routine save) in the
> R-format under 1.4.1 when I want to load them in 1.3.0.
>
> The reason for these 2 versions is that I received now another computer
> with version 1.3.0 having a fast processor and a lot of memory, i.e. I
> want to make the computations there. In former times, I had a slow
> computer and had to login to another computer. That one is not so fast
> as my new computer and has not so much memory, however, there is version
> 1.4.1 installed.

You can save the workspace explicitly using the old save format with
    save.image(version=1)
and even make this the default (so it happens on q()) with
    options(save.image.defaults=list(version=1))

More details are in help(save.image).

You would be much better off getting the computer with R 1.3.0 to upgrade
There have been definite improvements since then.

	-thomas

-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at
stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._