similar to: Convert to time from epoch

Hello I am trying to read a date and time from a file and convert them to POSIXct using strptime() the dates are stored in t which is a factor This the code I am using to illustarte > t[1] [1] 07/14/2009 13:41:00 10 Levels: 07/14/2009 13:41:00 07/14/2009 13:42:00 ... 07/15/2009 07:12:00 > a=t[1] > a [1] 07/14/2009 13:41:00 10 Levels: 07/14/2009 13:41:00 07/14/2009 13:42:00 ...

I have a data file where each entry is indexed by the time in seconds since epoch (e.g. 1046315697). Is there an easy way to convert this time value into a more friendly time (such as Month-Year) when plotting it? I searched through the manual, mailing lists, and functions like as.POSIXct and strptime, but didn't find what I need. Thanks, Sharad.

Hola a todos: Debe de ser una tontería, pero no consigo saber porque la siguiente linea no devuelve la fecha actual: as.Date(as.numeric(Sys.time())) He hecho esa prueba porque no consigo pasar un numero convertido a partir de una fecha y modificado a fecha de nuevo. Gracias por adelantado. Un saludo, Alberto. [[alternative HTML version deleted]]

A sample of the data I have is: > head(sensor) logged_on accx accy accz compassx compassy compassz gyrox gyroy gyroz 1 1326561428000 -0.4602 0.8346 0.0936 0.145508 -0.350586 0.259766 59.617390 28.521740 59.617390 2 1326561428050 -0.4212 1.0452 0.1326 0.219727 -0.321289 0.241211 88.695656 27.478260 88.695656 3 1326561428100 -0.2496 1.3416 0.2886 0.214844 -0.326172

Hello all, I have a quick question about formatting date strings.. I am currently debugging some Matlab code someone else wrote and since it is so bad that I have to go through it line by line I figured that I would just rewrite the thing in R. The code produces plots of wave spectra with decimal days since the Epoch as the x axis and wave period as the Y axis. I am able to convert the date

When detecting kernels we have to list the files in the package to find the right /boot/vmlinuz file. In virt-v2v 1.28 we ran: rpm -ql kernel Because multiple kernels can be installed this gave incorrect results, which was reported in RHBZ#1161250 and initially fixed in commit 377bc302f11db3da4263f894c76a7d280fb25dbd. This changed the command to: rpm -ql [epoch:]kernel-version.release

Hi, I have a very large data set stored as an xts object. xts is very nice about showing row labels as "human readable" dates and times. I want the actual epoch values that are stored internally. The only way I can find to access them is one-at-a-time using the internal function: xcoredata() Calling this in an entire column, the "R" way doesn't work. It will only

Return it in the app2_epoch field of the guestfs_application2 struct Signed-off-by: Nikos Skalkotos <skalkoto@gmail.com> --- src/inspect-apps.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) diff --git a/src/inspect-apps.c b/src/inspect-apps.c index 8e645b7..bd4e6c1 100644 --- a/src/inspect-apps.c +++ b/src/inspect-apps.c @@ -439,6 +439,7 @@

I am building a new workstation based on EL8 now. As someone else here mentioned, the raw EL8 distribution is unusable as a workstation. Therefore I am building lot of additional packages. Today I came across a problem with a custom package with an Epoch version, that kills the yum/dnf update process (it tries to find a "best" package etc.). My actually question; is the RPM Epoch

Hi, I have a process (not in R) that records events with a time stamp. So, I have a huge series of maybe 100,000 time stamps. I'd like to break it up into hourly (Or daily) intervals and then count how many events occurred in each interval. That way I can graph it. Ideally, converting the this into a time series in R would let me do some interesting analysis. The data is just a list of

There is something wrong, I think, with the date-time conversion from a numeric value if you use Central European Time (CET) as timezone. Examples from R: If I use the GMT time zone it is OK, I get the same time back from as.POSIXct as I entered > as.POSIXct(as.numeric(strptime("30/01/2012 13:00:00", format="%d/%m/%Y >

Hello R experts, Is the a function to preform a Hosmer Lemshaw goodness of fit? I am running R 2.8. Thanks, AlonBen-Ari Department of Anesthesiology and CCM Univ. Pittsburgh [[alternative HTML version deleted]]

Hello, I have strings with date-/time-data from a logfile. For a sort-by-time (and other time-related analysis) I need something to convert the times to the Unix-epoche-time (better also with parts of seconds). Is there something that does that job (or a similar conversion) in R? TIA, Oliver Bandel

It''s come to our attention, that the time gets screwed up when set between EPOCH and EPOCH + uptime. This may not seem important (because we don''t live in the 70s anymore) but it makes LTP fail. LTP has a date test that checks what happens when set to EPOCH + 100 secs + 100 nsecs, and makes sure that it gets a proper result. The following patches helps xen handle the case

Dear R users; I have downloaded a grib file format (Met.grib) and I want to export its data to excel file. Also I want to do some mathematic on some columns. But I got error. I would be more than happy if anyone can help me to do this. I have provided the codes and the Met.grib file in this email. Sincerely yours # Load the necessary libraries > library(raster) # For reading GRIB files

Hello Does anybody know why is there so much packages with EPOCH cca? What is it good for? Petr Klima

Skipped content of type multipart/alternative-------------- next part -------------- Index: pbx.c =================================================================== RCS file: /usr/cvsroot/asterisk/pbx.c,v retrieving revision 1.14 diff -u -r1.14 pbx.c --- pbx.c 19 Apr 2003 02:41:22 -0000 1.14 +++ pbx.c 21 Apr 2003 02:27:43 -0000 @@ -713,6 +713,8 @@ { char *first,*second; char tmpvar[80] =

Hello, This is mostly to developers, but in case I missed something in my literature search, I am sending this to the broader audience. - Are there any plans in the works to make "time" classes a bit more friendly to the rest of the "R" world? I am not suggesting to allow for fancy functions to manipulate times, per se, or to figure out how to properly

Hello, This is mostly to developers, but in case I missed something in my literature search, I am sending this to the broader audience. - Are there any plans in the works to make "time" classes a bit more friendly to the rest of the "R" world? I am not suggesting to allow for fancy functions to manipulate times, per se, or to figure out how to properly

Hi all, I'm getting confused by date handling. I wish to read a date from a file wich is a number of seconds since 1970 (POSIXct). Then i wish to convert this date to a human readable form (POSIXlt) By example : ctDate<-1132963200 #"Wed Aug 30 14:24:37 2006" is(ctDate) [1] "numeric" "vector" ctDate isn't a numeric vector, it is a