How to disable R warning: timezone of object (UTC) is different than current timezone ()

Question

I keep getting this warning: timezone of object (UTC) is different than current timezone (). My current timezone is "EET", as shown by Sys.timezone().

Is there a way to change the R timezone to UTC, instead of it taking the one from my system? Or to disable the warning?

Answer 1

Try this:

Sys.setenv(TZ = "UTC")

Answer 2

If there is provision for getting a local timezone it is from:

 Sys.timezone()
[1] ""  # So in my case nothing there

And there is no Sys.timezone()<- function

 Sys.time()
[1] "2011-01-06 16:01:10 EST"

But obviously something is to be had. And here is how to convert to another time zone:

 strftime(Sys.time() , tz="UTC")
[1] "2011-01-06 21:02:48"

For further specific advice perhaps if you offered the results of dput() on the object, we would all have access to any necessary attributes to answer further questions.

Answer 3

If you are sure that your code works and other sources of warnings are not likely, then just put the call inside suppressWarnings().

For example,

require(quantmod)
getSymbols("FDX")
suppressWarnings(chartSeries(FDX,theme="white"))

Answer 4

If you work with xts data type (let's call the xts object xts.ts) from the package xts you can use:

tzone(xts.ts) <- "America/Phoenix"