Super! It works. :-) Thanks a lot, you both. Greetings Jürgen
Petr PIKAL schrieb: > Hi > [email protected] napsal dne 09.09.2009 10:07:49: > > >> Hi Henrique, >> >> Thanks for your reply. >> I tried you suggestion but it didn't work with the poLCA package. >> >> Maybe i didn't express myself good. >> >> The normal syntax is: >> >> f <- cbind(V1,V2,V3)~1 >> poLCA(f,data) >> > > > You complicated it a bit. From poLCA manual it needs a formula > cbind(V1,V2,V3)~1 > where V1:V3 are names from data > > If you put names of your data frame to variable mena > > mena <- names(aktDat) > then you can collect all items into a formula by > > f <- as.formula(paste("cbind(", paste(mena, collapse = ","), ")~1")) > > and > poLCA(f,data) > > should work. > > Regards > Petr > > > >> and what I wanna do is kind of use an expression to automatically >> generate the "V1,V2,V3" argument of the "cbind expression" via >> "names(data)" to assign it to f , so that later the poLCA command uses >> my "f" expression the same way if I had put in V1,V2,V3 manually. >> >> Greetings >> Jürgen >> >> I think the problem is that in cbind need arguments of non character >> type, seperated by commas >> >> >> >> Henrique Dallazuanna schrieb: >> >>> I don't understand the cbind(bi) sintax, but you can do this with the >>> folowing: >>> (Using iris data from R) >>> >>> form <- formula(paste(paste(names(iris), collapse = " + "), "~ 1")) >>> >>> 2009/9/8 "Biedermann, Jürgen" <[email protected] >>> <mailto:[email protected]>> >>> >>> Hi there, >>> >>> I have the following problem: >>> >>> I have a package called "polLCA" which has the following syntax: >>> >>> poLCA(formula, data) >>> >>> and needs the following formula definition: >>> >>> formula <- cbind(V1,V2,V3,...) >>> >>> So far so good. >>> >>> What I tried now was the following: >>> #Get "data" with the "read.table" fuction >>> data <- read.table("d:/ .....) >>> #Select cols to use in the analysis >>> aktDat <- data[2:15] >>> #get the names >>> names(aktDat) >>> #put them together in one string, comma as separation sign >>> bi <- paste(names(aktDat),collapse=",") >>> #use this string in the "f" function to bind the variables >>> formula <- cbind(bi)~1 >>> #Calculate the modell >>> poLCA(formula, data) >>> >>> but this doesn't work: I get the following error message: >>> >>> "Warnung in model.matrix.default(formula, mframe) : >>> variable 'cbind(bi)' converted to a factor" >>> >>> Could anyone help me? >>> Thanks >>> >>> Greetings >>> Jürgen >>> >>> ______________________________________________ >>> [email protected] <mailto:[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 >>> and provide commented, minimal, self-contained, reproducible code. >>> >>> >>> >>> >>> -- >>> Henrique Dallazuanna >>> Curitiba-Paraná-Brasil >>> 25° 25' 40" S 49° 16' 22" O >>> >> -- >> Jürgen Biedermann >> Institut für forensische Psychiatrie >> Charite Universitätsmedizin Berlin >> Tel.: 030 8445-1434 >> Email: [email protected] >> >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> [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 > >> and provide commented, minimal, self-contained, reproducible code. >> > > -- Jürgen Biedermann Institut für forensische Psychiatrie Charite Universitätsmedizin Berlin Tel.: 030 8445-1434 Email: [email protected] [[alternative HTML version deleted]]
______________________________________________ [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 and provide commented, minimal, self-contained, reproducible code.
