You need to learn to use the str() function to debug these kinds of problems. And you need to learn to provide data with your code (perhaps with the dput function) so others can reproduce your problem if you want help.
I would guess that you have non-numeric data in your files. --------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN:<[email protected]> Basics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/Batteries O.O#. #.O#. with /Software/Embedded Controllers) .OO#. .OO#. rocks...1k --------------------------------------------------------------------------- Sent from my phone. Please excuse my brevity. "s.s.m. fauzi" <[email protected]> wrote: >Hi, >I have two matrix from two different .csv files. > >#load .csv files >a <- as.matrix(read.table("Whirr_127.csv", header=T, sep=",", >row.names=1)) >b <- as.matrix(read.table("Files_Whirr_127.csv", header=T, sep=",", >row.names=1)) >a >b > >I managed to do transpose to 'b' without any error. > >transpose_task <- t(b) >transpose_task > >But, when I tried to do multiplication (a%*%transpose_task), an error >occured. > >td <- (a%*%transpose_task) >td > >Here is the error: >ERROR: requires numeric/complex matrix/vector arguments >ERROR: object 'td' not found > >Anybody can help me to solve this? > >Thank you > > [[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. ______________________________________________ [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.
