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

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 warnin开发者_高级运维g?

---

Try this:

Sys.setenv(TZ = "UTC")

---

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.

---

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"))

---

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"

---

I landed on this page, as I kept getting this exact same warning too when trying to import manager return data from an excel spreadsheet into a data.frame and then converting the data.frame to an xts. Even xts(x = my.data, order.by = my.dates, tz = Sys.timezone()) did not solve it for me, despite my system and the xts having obviously the same time zone!

How did I solve this without tempering with the system?
Very simple.
Instead of constructing my xts with the construct xts(x = my.data, order.by = my.dates) where my.dates look like: 2014-01-31, 2014-02-28, etc... which kept producing the annoying warning, I simply used xts(x = my.data, order.by = as.Date(my.dates))
Solved: no more warning.