[R] sas to r
Adaikalavan Ramasamy
ramasamy at cancer.org.uk
Sat Jul 17 16:59:06 CEST 2004
I am must be a bigger/slower fool to have fallen for April fools trick
in the mid of July !
Sorry Greg for misleading you.
On Sat, 2004-07-17 at 11:43, Uwe Ligges wrote:
> Adaikalavan Ramasamy wrote:
>
> > On Fri, 2004-07-16 at 23:18, Greg Adkison wrote:
> >
> >>I would be incredibly grateful to anyone who'll help me translate some
> >>SAS code into R code.
> >
> >
> > Searching for "SAS code OR script OR translate" on
> > http://maths.newcastle.edu.au/~rking/R/ gives a few results, one of
> > which looks promising is
>
>
> > http://tolstoy.newcastle.edu.au/R/help/04/04/0009.html and
>
> I anticipated the above citation from 01 Apr 2004 (hint: 01 April !!!!!)
> when I looked at the thread and realized URLs were cited ...
>
> Uwe
>
>
> > http://tolstoy.newcastle.edu.au/R/help/04/02/0660.html
> >
> >
> >>Say for example that I have a dataset named "dat1" that includes five
> >>variables: wshed, site, species, bda, and sla. I can calculate with the
> >>following SAS code the mean, CV, se, and number of observations of
> >>"bda" and "sla" for each combination of "wshed," "species," and "site,"
> >>restricting the species considered to only three of several species in
> >>dat1 (b, c, and p). Moreover, I can output these calculations and
> >>grouping variables to a dataset named "dat2" that will reside in RAM
> >>and include the variables wshed, site, species, mBdA, msla, cBda,
> >>sBdA, ssla, nBda, and nsla.
> >
> >
> > data(iris)
> > attach(iris)
> > iris[c(1,2,51,52,101,102), ]
> > Sepal.Length Sepal.Width Petal.Length Petal.Width Species
> > 1 5.1 3.5 1.4 0.2 setosa
> > 2 4.9 3.0 1.4 0.2 setosa
> > ...
> > 51 7.0 3.2 4.7 1.4 versicolor
> > 52 6.4 3.2 4.5 1.5 versicolor
> > ...
> > 101 6.3 3.3 6.0 2.5 virginica
> > 102 5.8 2.7 5.1 1.9 virginica
> >
> >
> >>tapply(Sepal.Length, Species, function(x) c( mean(x), sd(x)/mean(x),
> >
> > length(x) ))
> > $setosa
> > [1] 5.00600000 0.07041344 50.00000000
> >
> > $versicolor
> > [1] 5.93600000 0.08695606 50.00000000
> >
> > $virginica
> > [1] 6.58800000 0.09652089 50.00000000
> >
> >
> >
> >>proc sort data=dat1;
> >> by wshed site species;
> >>proc means data=dat1 noprint mean cv stderr n;
> >> by wshed site species;
> >> where species in ('b', 'c', 'p');
> >> var BdA sla;
> >> output out=dat2
> >> mean=mBdA msla
> >> cv=cBdA csla
> >> stderr=sBdA ssla
> >> n=nBdA nsla;
> >>
> >>Thanks,
> >>Greg
> >>
> >>______________________________________________
> >>R-help at stat.math.ethz.ch mailing list
> >>https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> >>PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
> >>
> >
> >
> > ______________________________________________
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> > https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
>
>
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