[R] Intersection for two curves

Peter Ehlers ehlers at ucalgary.ca
Sat Apr 24 19:54:30 CEST 2010


Well, this has seriously gotten off the original topic.

While Hadley makes some sense, it is nevertheless
sometimes the case (surely so for David, I would surmise)
that one is putting together a response to an R-help
query when a new query prompts one to temporarily abandon
the first and formulate a response to the second. One
may well prefer not to have one's workspace cleared even
though this would not lose more than the temporarily
suspended work. So, is ther *ever* a good reason to
*not* put rm(list=ls()) behind a comment char? I doubt it.

Just my 2c.

  -Peter Ehlers

On 2010-04-24 11:14, David Winsemius wrote:
>
> On Apr 24, 2010, at 10:09 AM, hadley wickham wrote:
>
>>> Perhaps, true in some respects. I am still chiseling out work using
>>> primitive editing tools. But it still takes several minutes to load the
>>> objects I am working on into memory and then several minutes each to
>>> build
>>> new models. The models still reside in memory, since I do not know any
>>> method for automatically saving the output that would not further
>>> increase
>>> the time expended. Typically I am working on .Rdta files that are
>>> 400MB on
>>> disk and then are around 4GB in RAM. I need to make a tradeoff
>>> between the
>>> time I would lose in saving after every <n> models or tabulation,
>>> versus the
>>> security of having everything saved. If you want to recommend methods
>>> that
>>> would speed those processes, I'm surely all ears.
>>
>> Well it sounds like you won't lose any work, but you will lose some
>> time. But why not open another session of R for R-help questions?
>> Then you're never in any danger. I often have four or five instances
>> of R running for different projects.
>
> Not a bad idea but one that I thought was unfeasible with my use of an
> R-GUI. I had considering keeping a session open on my laptop.
>
>>
>> Hadley
>>
>> --
>> Assistant Professor / Dobelman Family Junior Chair
>> Department of Statistics / Rice University
>> http://had.co.nz/
>
> David Winsemius, MD
> West Hartford, CT
>
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>

-- 
Peter Ehlers
University of Calgary



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