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2011 Feb 11
2
tzone and DST
I'm reading in ~3 years worth of data that includes hourly timestamps.
Presumably to avoid DST confusion, all the data is in PST time zone -- no
discontinuities in the spring or fall.
The data comes in a csv file, which I'm reading with
myvariable <- read.csv("my_data_file.csv",header=FALSE,
col.names=c("timedate","values"),colClasses=c("POSIXct","numeric"))
The time zone comes in as PST or PDT, as appropriate. That leads to
problems in the spring:
> temps$timedate[2185:2190]
[1] "2006-04-02 00:00:00 PST" &...