Hello
I have a data frame, called input, like this:
DateTime CO2_A1cont
1 2011-04-08 11:47:01 NA
2 2011-04-08 12:42:01 8.90000
3 2011-04-08 13:07:01 NA
4 2011-04-08 13:32:01 NA
5 2011-04-08 13:57:01 7.556482
6 2011-04-08 14:22:01 NA
....
57 2011-04-09 16:52:01 4.961558
And like to plot this series with plot() and connected lines, no interruption
by the NAs.
I found that this code works:
y<-input[,2]
times <- DateTime
plot(y~as.POSIXct(times, format="%d.%m. %H:%M"), type="l",
data=na.omit(data.frame(y,times)))
whereas this plot command...
plot(input[,2]~as.POSIXct(DateTime, format="%d.%m. %H:%M"), type="l",
data=na.omit(data.frame(input[,2],DateTime)))
... produces the error:
Error in model.frame.default(formula = input[, 2] ~ as.POSIXct(DateTime, :
variable lengths differ (found for 'as.POSIXct(DateTime, format = "%d.%m.
%H:%M")')
I already checked the length of y, times, input[,2], DateTime,
as.POSIXct(DateTime, format="%d.%m. %H:%M") which give all 57!
nrow(data.frame(input[,2],DateTime)) and nrow(data.frame(y,times)) give both
57! Too.
Thanks for any help.
Best regards
Raphael
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