Hi > -----Original Message----- > From: e-letter [mailto:inp...@gmail.com] > Sent: Monday, February 11, 2013 3:11 PM > To: PIKAL Petr > Cc: r-help@r-project.org > Subject: Re: [R] convert 12 time stamp to 24 hour > > On 11/02/2013, PIKAL Petr <petr.pi...@precheza.cz> wrote: > > > > str(testtimedataset) > > With my real data set, revealed that after conversion, the time series > data consists of 'chr' which I guess means character type data,
Do not guess. There is extensive help in R which you can ivoke by"?". ?mode ?typeof > reporting the following error: > > Error in plot.window(...) : need finite 'xlim' values In addition: > Warning messages: > 1: In xy.coords(x, y, xlabel, ylabel, log) : NAs introduced by coercion > 2: In min(x) : no non-missing arguments to min; returning Inf > 3: In max(x) : no non-missing arguments to max; returning -Inf > > > Does this mean I must convert the 24-hour time series values to POSIX*t Yes. > type objects; if so how please? ?strptime Regards Petr > > > > Anyway, by > > > > plot(testdata~testtimedataset$V1) > > > > you will get rid of error message but depending on testtimedataset > > mode you can get different one. > > > > Confirmed, thanks. ______________________________________________ R-help@r-project.org 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.
