[R] Error in length of vector ?
Hi, I'm having a weird result with the length() function: a [... omited ...] [9994] NA2003-12-03 16:37:00 2002-06-26 18:43:00 [9997] 2005-07-04 04:00:00 2007-02-16 22:09:00 2007-02-24 15:49:00 [1] NA length(LastModified) [1] 9 length(c(LastModified)) [1] 9 I was expecting to get 1 as an answer. I'm trying to bind two vector, and I keep getting the error - number of rows of result is not a multiple of vector length. Thus I tested length and got this value. Any hint? Thanks in advance, Sérgio Nunes __ R-help@stat.math.ethz.ch 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.
Re: [R] Error in length of vector ?
Hi you stepped on a difference between POSIXct and POSIXlt Details There are two basic classes of date/times. Class POSIXct represents the (signed) number of seconds since the beginning of 1970 as a ***numeric vector***. Class POSIXlt is a ***named list*** of vectors representing so you need to change your POSIXlt - named list to POSIXct by as.POSIXct(your vector) HTH Petr Maybe it could be useful to give some kind of warning into the help page of strptime e.g. Be aware of length of an objects created by strptime as POSIXlt class. It is always 9. See Details section of DateTimeClasses. On 2 Mar 2007 at 12:33, Sérgio Nunes wrote: Date sent: Fri, 2 Mar 2007 12:33:46 + From: Sérgio Nunes [EMAIL PROTECTED] To: r-help@stat.math.ethz.ch Subject:[R] Error in length of vector ? Hi, I'm having a weird result with the length() function: a [... omited ...] [9994] NA2003-12-03 16:37:00 2002-06-26 18:43:00 [9997] 2005-07-04 04:00:00 2007-02-16 22:09:00 2007-02-24 15:49:00 [1] NA length(LastModified) [1] 9 length(c(LastModified)) [1] 9 I was expecting to get 1 as an answer. I'm trying to bind two vector, and I keep getting the error - number of rows of result is not a multiple of vector length. Thus I tested length and got this value. Any hint? Thanks in advance, Sérgio Nunes __ R-help@stat.math.ethz.ch 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. Petr Pikal [EMAIL PROTECTED] __ R-help@stat.math.ethz.ch 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.
Re: [R] Error in length of vector ?
Thanks. Using as.POSIXct() worked fine, length = 1. Basically I cannot have a column of POSIXlt values in a matrix? Sérgio Nunes On 3/2/07, Petr Pikal [EMAIL PROTECTED] wrote: Hi you stepped on a difference between POSIXct and POSIXlt Details There are two basic classes of date/times. Class POSIXct represents the (signed) number of seconds since the beginning of 1970 as a ***numeric vector***. Class POSIXlt is a ***named list*** of vectors representing so you need to change your POSIXlt - named list to POSIXct by as.POSIXct(your vector) HTH Petr Maybe it could be useful to give some kind of warning into the help page of strptime e.g. Be aware of length of an objects created by strptime as POSIXlt class. It is always 9. See Details section of DateTimeClasses. On 2 Mar 2007 at 12:33, Sérgio Nunes wrote: Date sent: Fri, 2 Mar 2007 12:33:46 + From: Sérgio Nunes [EMAIL PROTECTED] To: r-help@stat.math.ethz.ch Subject:[R] Error in length of vector ? Hi, I'm having a weird result with the length() function: a [... omited ...] [9994] NA2003-12-03 16:37:00 2002-06-26 18:43:00 [9997] 2005-07-04 04:00:00 2007-02-16 22:09:00 2007-02-24 15:49:00 [1] NA length(LastModified) [1] 9 length(c(LastModified)) [1] 9 I was expecting to get 1 as an answer. I'm trying to bind two vector, and I keep getting the error - number of rows of result is not a multiple of vector length. Thus I tested length and got this value. Any hint? Thanks in advance, Sérgio Nunes __ R-help@stat.math.ethz.ch 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. Petr Pikal [EMAIL PROTECTED] __ R-help@stat.math.ethz.ch 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.
Re: [R] Error in length of vector ?
On 2 Mar 2007 at 13:22, Sérgio Nunes wrote: Date sent: Fri, 2 Mar 2007 13:22:43 + From: Sérgio Nunes [EMAIL PROTECTED] To: Petr Pikal [EMAIL PROTECTED] Copies to: r-help@stat.math.ethz.ch Subject:Re: [R] Error in length of vector ? Thanks. Using as.POSIXct() worked fine, length = 1. Basically I cannot have a column of POSIXlt values in a matrix? No, it has different length as it is a ***named list*** see e.g. Last.Modified[[1]] if it is POSIXlt class. Petr Sérgio Nunes On 3/2/07, Petr Pikal [EMAIL PROTECTED] wrote: Hi you stepped on a difference between POSIXct and POSIXlt Details There are two basic classes of date/times. Class POSIXct represents the (signed) number of seconds since the beginning of 1970 as a ***numeric vector***. Class POSIXlt is a ***named list*** of vectors representing so you need to change your POSIXlt - named list to POSIXct by as.POSIXct(your vector) HTH Petr Maybe it could be useful to give some kind of warning into the help page of strptime e.g. Be aware of length of an objects created by strptime as POSIXlt class. It is always 9. See Details section of DateTimeClasses. On 2 Mar 2007 at 12:33, Sérgio Nunes wrote: Date sent: Fri, 2 Mar 2007 12:33:46 + From: Sérgio Nunes [EMAIL PROTECTED] To: r-help@stat.math.ethz.ch Subject:[R] Error in length of vector ? Hi, I'm having a weird result with the length() function: a [... omited ...] [9994] NA2003-12-03 16:37:00 2002-06-26 18:43:00 [9997] 2005-07-04 04:00:00 2007-02-16 22:09:00 2007-02-24 15:49:00 [1] NA length(LastModified) [1] 9 length(c(LastModified)) [1] 9 I was expecting to get 1 as an answer. I'm trying to bind two vector, and I keep getting the error - number of rows of result is not a multiple of vector length. Thus I tested length and got this value. Any hint? Thanks in advance, Sérgio Nunes __ R-help@stat.math.ethz.ch 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. Petr Pikal [EMAIL PROTECTED] __ R-help@stat.math.ethz.ch 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. Petr Pikal [EMAIL PROTECTED] __ R-help@stat.math.ethz.ch 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.
Re: [R] Error in length of vector ?
Suggest you review the help desk article on dates in R News 4/1. It mentions that POSIXlt objects are lists with 9 components and other facts about date objects in R. On 3/2/07, Sérgio Nunes [EMAIL PROTECTED] wrote: Hi, I'm having a weird result with the length() function: a [... omited ...] [9994] NA2003-12-03 16:37:00 2002-06-26 18:43:00 [9997] 2005-07-04 04:00:00 2007-02-16 22:09:00 2007-02-24 15:49:00 [1] NA length(LastModified) [1] 9 length(c(LastModified)) [1] 9 I was expecting to get 1 as an answer. I'm trying to bind two vector, and I keep getting the error - number of rows of result is not a multiple of vector length. Thus I tested length and got this value. Any hint? Thanks in advance, Sérgio Nunes __ R-help@stat.math.ethz.ch 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. __ R-help@stat.math.ethz.ch 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.
