On 5/20/05, Uwe Ligges <[EMAIL PROTECTED]> wrote: > Alex K wrote: > > > Hello, > > > > I am very new to R, and this is certainly and uber-newby question: > > > > I am trying to read a vector of numeric data that contains the log > > of daily DJI returns and simply plot a histogram of it. > > > > The data I have is in a text file format, on each line a number > > represents the log of the returns of one day. > > > > I have problems in reading this in a vector numeric format. > > > > If I try > > > > retr<- as.numeric(read.table("logDJI.TXT", header=FALSE, sep="", dec="." )); > > > read.table() returns a data.frame, as the docs point out, but as.numeric > expects a vector. > > Either extract the first (and only?) column or read the data using > scan(), if there is really only one column. > > Uwe Ligges
Hi Uwe, thank you for the reply. How do I extract only the colum? The text file looks like: "-0.000948343416257784 0.00181733586025109 0 0.0108130251220595" except is has about 2200 entries (numbers) instead of just four as above. Thank you again, Alex > > > > I get: > > " Error in as.double.default(read.table("logDJIm.TXT", header = FALSE, > > sep = "", : > > (list) object cannot be coerced to 'double'" > > > > and when I try to plot: > > > > plot(density(retr, width=.004), type="l", xlab="y", ylab="pdf"); > > > > I get: > > > > "Error in density(retr, width = 0.004) : argument 'x' must be numeric" > > > > If I try: > > > > retr<- as.data.frame(read.table("logDJI.TXT", header=FALSE, sep="", dec="." > > )); > > > > I get no reading or conversion error, but I get the same error when I > > try to plot as above. > > > > Can anyone help with this? > > > > Thank you in advance, > > Alex > > > > ______________________________________________ > > R-help@stat.math.ethz.ch mailing list > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide! > > http://www.R-project.org/posting-guide.html > > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html