[R] direct data frame entry
hi: I searched the last 2 hours for a way to enter a data frame directly in my program. (I know how to read from a file.) that is, I would like to say something like d - this.is.a.data.frame( c(obs1name, 0.2, 0.3), c(obs2name, 0.4, 1.0), c(obs3name, 0.6, 2.0) , varnames=c(name, val1, val2) ); everything I have tried sofar (usually, building with rbind and then names(d)) has come out with factors for the numbers, which is obviously not what I want. this must be a pretty elementary request, so it should probably be an example under data.frame (or read.table). of course, it is probably somewhere---just I have do not remember it and could not find it after 2 hours of searching. I also tried the r-help archives---at the very least, I hope we will get the answer there for future lookups. regards, /iaw __ [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
RE: [R] direct data frame entry
?data.frame says: Usage: data.frame(..., row.names = NULL, check.rows = FALSE, check.names = TRUE) Arguments: ...: these arguments are of either the form 'value' or 'tag=value'. Component names are created based on the tag (if present) or the deparsed argument itself. which means you need to do the `transpose' of what you did: give data.frame() columns, rather than rows. E.g., dat - data.frame(x=factor(c(A, B, A, C), y=1:4, rownames=LETTERS[1:4]) It's hard to build a data frame by row, because one needs to check and make sure data in each column are consistent, that data in a factor column have the right levels, etc. Andy From: ivo welch hi: I searched the last 2 hours for a way to enter a data frame directly in my program. (I know how to read from a file.) that is, I would like to say something like d - this.is.a.data.frame( c(obs1name, 0.2, 0.3), c(obs2name, 0.4, 1.0), c(obs3name, 0.6, 2.0) , varnames=c(name, val1, val2) ); everything I have tried sofar (usually, building with rbind and then names(d)) has come out with factors for the numbers, which is obviously not what I want. this must be a pretty elementary request, so it should probably be an example under data.frame (or read.table). of course, it is probably somewhere---just I have do not remember it and could not find it after 2 hours of searching. I also tried the r-help archives---at the very least, I hope we will get the answer there for future lookups. regards, /iaw __ [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
Re: [R] direct data frame entry
easy to do it by column: d - data.frame(name=c(obs1name,obs2name,obs3name),val1=c(0.2,0.4,0.6),val2=c(0.3,1.0,2.0),row.names=c(r1,r2,r3)) d name val1 val2 r1 obs1name 0.2 0.3 r2 obs2name 0.4 1.0 r3 obs3name 0.6 2.0 (when you do it by row, you get the numbers as factors because c(obs1name, 0.2, 0.3) etc. are character vectors) At Wednesday 01:29 PM 6/9/2004, ivo welch wrote: hi: I searched the last 2 hours for a way to enter a data frame directly in my program. (I know how to read from a file.) that is, I would like to say something like d - this.is.a.data.frame( c(obs1name, 0.2, 0.3), c(obs2name, 0.4, 1.0), c(obs3name, 0.6, 2.0) , varnames=c(name, val1, val2) ); everything I have tried sofar (usually, building with rbind and then names(d)) has come out with factors for the numbers, which is obviously not what I want. this must be a pretty elementary request, so it should probably be an example under data.frame (or read.table). of course, it is probably somewhere---just I have do not remember it and could not find it after 2 hours of searching. I also tried the r-help archives---at the very least, I hope we will get the answer there for future lookups. regards, /iaw __ [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
Re: [R] direct data frame entry
thank you, chaps. ok, so this is not as straightforward as I had thought. perhaps the read.table() function should have the ability to read inline (terminated, e.g., by two newlines, or a usersettable string), rather than just from a file. this would be a nice feature. regards, /iaw __ [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
Re: [R] direct data frame entry
Hi Ivo! https://www.stat.math.ethz.ch/pipermail/r-help/2004-June/050601.html Sincerely Eryk *** REPLY SEPARATOR *** On 6/9/2004 at 3:29 PM ivo welch wrote: hi: I searched the last 2 hours for a way to enter a data frame directly in my program. (I know how to read from a file.) that is, I would like to say something like d - this.is.a.data.frame( c(obs1name, 0.2, 0.3), c(obs2name, 0.4, 1.0), c(obs3name, 0.6, 2.0) , varnames=c(name, val1, val2) ); everything I have tried sofar (usually, building with rbind and then names(d)) has come out with factors for the numbers, which is obviously not what I want. this must be a pretty elementary request, so it should probably be an example under data.frame (or read.table). of course, it is probably somewhere---just I have do not remember it and could not find it after 2 hours of searching. I also tried the r-help archives---at the very least, I hope we will get the answer there for future lookups. regards, /iaw __ [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 Dipl. bio-chem. Eryk Witold Wolski@MPI-Moleculare Genetic Ihnestrasse 63-73 14195 Berlin 'v' tel: 0049-30-83875219 / \ mail: [EMAIL PROTECTED]---W-Whttp://www.molgen.mpg.de/~wolski __ [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
Re: [R] direct data frame entry
ivo welch ivo.welch at yale.edu writes: thank you, chaps. ok, so this is not as straightforward as I had thought. perhaps the read.table() function should have the ability to read inline (terminated, e.g., by two newlines, or a usersettable string), rather than just from a file. this would be a nice feature. Have a look at the my.stdin function at: https://stat.ethz.ch/pipermail/r-help/2003-June/033622.html It is intended to be used in a sourced file as shown in the example there. __ [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
