Dear Helmut, How about table(species, sample)?
Regards, John -------------------------------- John Fox Department of Sociology McMaster University Hamilton, Ontario Canada L8S 4M4 905-525-9140x23604 http://socserv.mcmaster.ca/jfox -------------------------------- > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Helmut > Kudrnovsky > Sent: Saturday, December 18, 2004 8:31 AM > To: [EMAIL PROTECTED] > Subject: [R] variables - data-structure > > dear R-friends, > > i`ve got a large dataset of vegetation-samples with about 500 > variables(=species) in the following format: > > 1 spec1 > 1 spec23 > 1 spec54 > 1 spec63 > 2 spec1 > 2 spec2 > 2 spec253 > 2 spec300 > 2 spec423 > 3 spec20 > 3 spec88 > 3 spec121 > 3 spec200 > 3 spec450 > . > . > > this means: sample 1 (grassland) with the species (=spec) 1, > 23, 54, 63 > > is it possible to get a following data-structure for further analysis? > > 1 2 3 ...... > spec1 1 1 0 > spec2 0 1 0 > spec3 > ... > spec253 0 1 0 > ... > spec450 0 0 1 > > with thanks from the snowy tirol > helli > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://stat.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://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
