R help - Feb 2005 - Hugh image created from modest data

Dear R users,

I am running R2.1 on windows XP SP2.  I have a problem that I fear I am
providing insufficient information to resolve.  But if anyone can suggest
directions to understand the problem I would be most grateful.

 

 

I import modest datasets which create a list of data frames (primary data
object) amounting to 15.9Mb  when measured internally by object.size() . The
sizes of the list components in the primary data object  are consistent with
the total, again when measured by object.size() All other objects in my work
area contribute less than 2Kb

 

After doing some analysis the primary data object would on occasions expand
to 800Mb but is (usually) cut back prior to saving the image of the work
area on exiting, or at sparse intervals during processing.

 

The situation now is that internally, as measured by object.size(),  my
working directory is less than 16Megs but image.save is creating an .Rdata
image in excess of 800Meg. Could this be consistent in some way?  If it is
not, or is unusual, how would I go about finding the extra, unwanted
information and removing it.

 

Any comment or suggestions would be appreciated

 

Simon Gatehouse


	[[alternative HTML version deleted]]

Simon:

ls(all=TRUE) will show you all objects in your workspace. If you have plot
history recording turned on,for example,.SavedPlots can get quite large and
will be part of your saved image.

-- Bert Gunter
Genentech Non-Clinical Statistics
South San Francisco, CA
 
"The business of the statistician is to catalyze the scientific learning
process."  - George E. P. Box
 
 
> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch 
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Simon Gatehouse
> Sent: Tuesday, February 01, 2005 2:10 PM
> To: r-help at stat.math.ethz.ch
> Subject: [R] Hugh image created from modest data
> 
> Dear R users,
> 
> I am running R2.1 on windows XP SP2.  I have a problem that I 
> fear I am
> providing insufficient information to resolve.  But if anyone 
> can suggest
> directions to understand the problem I would be most grateful.
> 
>  
> 
>  
> 
> I import modest datasets which create a list of data frames 
> (primary data
> object) amounting to 15.9Mb  when measured internally by 
> object.size() . The
> sizes of the list components in the primary data object  are 
> consistent with
> the total, again when measured by object.size() All other 
> objects in my work
> area contribute less than 2Kb
> 
>  
> 
> After doing some analysis the primary data object would on 
> occasions expand
> to 800Mb but is (usually) cut back prior to saving the image 
> of the work
> area on exiting, or at sparse intervals during processing.
> 
>  
> 
> The situation now is that internally, as measured by 
> object.size(),  my
> working directory is less than 16Megs but image.save is 
> creating an .Rdata
> image in excess of 800Meg. Could this be consistent in some 
> way?  If it is
> not, or is unusual, how would I go about finding the extra, unwanted
> information and removing it.
> 
>  
> 
> Any comment or suggestions would be appreciated
> 
>  
> 
> Simon Gatehouse
> 
> 
> 	[[alternative HTML version deleted]]
> 
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