[R] Just 2 more questions - for now!

[Duncan Murdoch]

On 7/24/2008 7:01 AM, Williams, Robin wrote:
> Hi all, 
> Thanks for the help with my previous post. 
> I have just two more questions for the minute. 
>   I think I said in a previous post that I like to use the terminal,
> i.e. run rterm.exe. On exiting the terminal, I am asked if I want to
> save the workspace. If I hit y (yes), the workspace is just saved as
> .rdata in my working directory, does anyone know how I can name it
> directly from the terminal? 
>   More importantly, I can't then open this file from the terminal.
> Obviously loading the file from windows explorer brings up the GUI.
> Anyone know the command I need? All I can think of doing is adding
> rterm.exe to my path and running it from the command prompt (adding the
> file as an argument to my command), but surely there is an easy way to
> do this from R? Of course I would like to have the terminal open and
> open and close various workspaces in one session, without wanting to
> restart R all the time. 

See save.image() and load().  You can automatically load one of these by 
listing it on the command line; this is how the shortcuts work, but it 
is undocumented.

Duncan Murdoch

>  
>   Finally, I rather embarrasingly can't get lm to work despite reading
> the help. I can get it to work with a single explanatory variable, EG 
> model <- lm(data$admissions~data$maxitemp)
> but how to include a second explanatory variable (minitemp)? I keep
> getting errors. Surely I don't need to use
> c(data$maxitemp,data$minitemp) etc? 
>  
> All help greatly appreciated - I am getting there slowly!    
>  
> 
> Robin Williams
> Met Office summer intern - Health Forecasting
> robin.williams at metoffice.gov.uk 
> 
>  
> 
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> 
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