Its saying you are trying to pass a list to zoo (a data frame is a list); however, from ?zoo we see zoo takes a first argument of: "a numeric vector, matrix or a factor".
On 10/10/06, Horace Tso <[EMAIL PROTECTED]> wrote: > dear list, > > I have these hourly price data over a 20 year period. Among other things, I > want to plot them with time on the x-axis. The data is in a data frame, > > > head(OWI.SE.all) > Record_Number Name Condition Time_Period Price > 13 12 WECC-OWI SouthEast All 1/1/2012 Hour: 1 41.21383 > 28 27 WECC-OWI SouthEast All 1/1/2012 Hour: 2 38.38091 > 43 42 WECC-OWI SouthEast All 1/1/2012 Hour: 3 39.97879 > 58 57 WECC-OWI SouthEast All 1/1/2012 Hour: 4 40.14156 > 73 72 WECC-OWI SouthEast All 1/1/2012 Hour: 5 38.21092 > 88 87 WECC-OWI SouthEast All 1/1/2012 Hour: 6 40.09152 > > And the date-times are in a POSIX object dte1, > > > class(dte1) > [1] "POSIXt" "POSIXlt" > > When I tried to create a zoo with dte1 as the index, I got an error, > > > zoo(OWI.SE.all, dte1) > Error in order(x, ..., na.last = na.last, decreasing = decreasing) : > unimplemented type 'list' in 'orderVector1' > > I guess that's saying the index of a zoo can't have a time component. Am I > correct? If so, is there a way to include an hour component in a zoo object. > > Second question: > > If I just attach this dte1 to my data frame as a column named Date and try > plotting it as, > > > plot(OWI.SE.all$Date, OWI.SE.all$Price, type="l") > > I got non-sensical result. How do I plot hourly data in general? > > TIA. > > Horace W. Tso > > ______________________________________________ > [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.
