> From: Hasan Diwan <[email protected]> > To: R Project Help <[email protected]> > Date: 01/27/2012 10:47 AM > Subject: [R] PosixCT subsecond accuracy > Sent by: [email protected] > > The first column is epoch time. I read that POSIXct has support for > this, sort of[1]. So, I tried: > > sensor[,1] <- as.POSIXct(sensor[,1]/1000, origin='1970-01-01 12:00:00') > > head(sensor) > logged_on accx accy accz compassx compassy > compassz gyrox gyroy gyroz > 1 2012-01-15 05:17:08 -0.4602 0.8346 0.0936 0.145508 -0.350586 > 0.259766 59.617390 28.521740 59.617390 > 2 2012-01-15 05:17:08 -0.4212 1.0452 0.1326 0.219727 -0.321289 > 0.241211 88.695656 27.478260 88.695656 > 3 2012-01-15 05:17:08 -0.2496 1.3416 0.2886 0.214844 -0.326172 > 0.141602 29.565218 -14.747826 29.565218 > 4 2012-01-15 05:17:08 -0.3276 1.0374 0.0546 0.261719 -0.314453 > 0.243164 8.765218 16.556522 8.765218 > 5 2012-01-15 05:17:08 -0.3588 1.0686 0.2418 0.229492 -0.307617 > 0.212891 -33.808697 35.756523 -33.808697 > 6 2012-01-15 05:17:08 -0.3120 1.0686 0.2652 0.261719 -0.289062 > 0.246094 -40.347828 24.626087 -40.347828 > > But now the fractional seconds are missing... Help? -- H
?options, look for digits.secs, and probably set it to 3, but careful of the character representation of those stamps. See David's helpful work around of 24 January at http://r.789695.n4.nabble.com/POSIXct-value-display-incorrect-for-some-values-td4311446.html -- Curt Seeliger, Data Ranger Raytheon Information Services - Contractor to ORD [email protected] 541/754-4638 [[alternative HTML version deleted]] ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
