Re: [R] Sorting data from one column with strings

try sqldf: > x Sample_no Species Nitrogen Carbon 1 1 Cod 15.2 -19.0 2 2 Haddock 14.8 -20.2 3 3 Cod 15.6 -18.5 4 4 Cod 13.2 -20.1 5 5 Haddock 14.3 -18.8 > require(sqldf) > sqldf("select Species, avg(Nitrogen) Nitrogen, a

Re: [R] Sorting data from one column with strings

(apologies for any double hits; forgot to reply all...) Or, you could just go back to basics, and write yourself a general loop that goes through whatever levels of a variable and gives you back whatever statistics you want... below is an example where you estimate means for each level, but you co

Re: [R] Sorting data from one column with strings

-help-boun...@r-project.org] On Behalf Of Ramsvatn Silje Sent: donderdag 4 november 2010 13:28 To: R-help@r-project.org Subject: [R] Sorting data from one column with strings Hello, I have tried to find this out some other way, but unsuccessful I have to try this list. I assume this should be

Re: [R] Sorting data from one column with strings

On Nov 4, 2010, at 8:28 AM, Ramsvatn Silje wrote: Hello, I have tried to find this out some other way, but unsuccessful I have to try this list. I assume this should be quite simple. I have a dataset with 4 columns, "Sample_no", "Species", "Nitrogen", "Carbon" in csv format. In the specie

[R] Sorting data from one column with strings

Hello, I have tried to find this out some other way, but unsuccessful I have to try this list. I assume this should be quite simple. I have a dataset with 4 columns, "Sample_no", "Species", "Nitrogen", "Carbon" in csv format. In the species column I have many different species with varying numbe