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More powerful than objects() or ls()

5 messages · Patrick Connolly, root, M. Edward (Ed) Borasky +2 more

Patrick Connolly
# 
platform i686-pc-linux-gnu
arch     i686             
os       linux-gnu        
system   i686, linux-gnu  
status                    
major    1                
minor    2.1              
year     2001             
month    01               
day      15               
language R                


For years, I used a function in Splus to give me more information than
just the object names which ls() would do.  Typically, it would give
something like this:

     Object        Mode   Rows Cols Len     Date     
 1 .Last.value  NULL         -    -   0 20 Mar 13:44
 2 last.warning list         -    -  50 16 Mar 13:58
 3 glm.mano     function     -    -   2 16 Mar 13:54
 4 gam.mano     function     -    -   2 16 Mar 13:18
 5 .Random.seed numeric      -    -  12 16 Mar 11:57
 6 Kyph.glm     list         -    -  19 16 Mar 09:42
 7 mano.df      dataframe  240    5   5 15 Mar 11:31
 8 reorg        function     -    -   2 15 Mar 11:31
 9 m793.df      dataframe   15   32  32 15 Mar 10:52
10 .First       function     -    -   1 19 Feb 14:22
11 ps.region    numeric      -    -   4  3 May  1996

There are times when the date is very valuable information,
particularly years later.  I would like to be able to do something
similar in R but of course, the same method won't work because objects
are not stored as separate unix files in a .Data directory.

I had thought of adding a date with attr() and was then going to redo
the function which could use that information in place of the file
information I used in Splus.  Unfortunately, that means the date
attibute is added to everything when displayed which is too cluttered.

Then of course, I'd need to figure an easy (preferably automatic) way
of adding the date to the objects I was interested in.  However, I was
hoping someone might already have a better way of achieving the same
end, and preferably without the unnecessary verbiage mentioned above.

Ideas gratefully accepted.

Thanks
root
# 
Hi there.
I am converting some Splus syntax - is there an R equivalent for the 'lag'
function, as in:
Xi<-lag(X,i)
= all the members of X are shifted along by i?

Stuart

*************************************************************
Stuart Leask MA MRCPsych
Clinical Lecturer in Psychiatry
Duncan Macmillan House
Porchester Road               "Ask a clock how it works, &
Nottingham                    all it will tell you is the time"
UK   NG3 6AA
Tel: +44-0 115 969 1300 xtn 40784 Fax: 0115 955 5352
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M. Edward (Ed) Borasky
# 
I have a minor glitch in the "sm" contributed package, routine "sm.regression".
It's supposed to accept the "ylim" option to set the scale of the plot, but
that doesn't appear to be working. I'm using the pre-compiled version for
Windows. I haven't tried any of the other versions. It *does* appear to be
accepting the "col" option; I can plot the smoothed curve in red. It would be
nice if I could get it to take "lwd" as well, and plot the line *after* the
points instead of before. What I am doing now is the "sm.regression", then
re-plotting the points and the smoothed curve to get the picture I want.
--
znmeb at aracnet.com (M. Edward Borasky) http://www.aracnet.com/~znmeb
http://www.borasky-research.net/

Coming soon to a theatre near you -- the remake of "War With The Newts"!

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Uwe Ligges
#
Dr Stuart Leask wrote:
You'll find it in the package "ts":
library(ts)
lag(...)

Uwe Ligges
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Thomas Lumley
#
On Thu, 22 Mar 2001, Patrick Connolly wrote:
comment() does the information management you need. There isn't an
automatic way of doing the date information and I can't think ofa general
one that wouldn't be horribly slow.  You could add a date-setting function
to your most frequnelty used object creation functions  (perhaps
read.table and glm in my case).

	-thomas

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