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 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 > > ______________________________________________ > [EMAIL PROTECTED] 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 > ______________________________________________ [EMAIL PROTECTED] 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