similar to: Date code conversion

Hi all, I'm having a little bit of trouble with some date conversions and am hoping someone can help me out. Thanks in advance. OK, I have two sources of data that provide date info in a csv file differently. I've attached a small zipped file with two text files that illustrate both. (Is it ok to send attachments to this list? Not sure. It's very small.) I need to be able to

Hi, I wonder if someone can suggest how to create a new data.frame Y from X where X$PL_Pos is summed by each unique X$MyDate. Y should end up with two (or more) columns Y$MyDate and Y$PL_Sum with its value being the cumsum of all the values in X for that date. - a 'daily cumsum'. Thanks, Mark TStoDate = function (TSDate) { X = strptime(TSDate + 19e6L, "%Y%m%d")

Hi, Can strptime (or some other function) help me turn the following column of a data.frame into two new columns, one as date and the other as time, preserving the AM/PM value? Thanks, Mark > B ENTRY DATE 1 3/23/2009 6:30:00 AM 2 3/23/2009 6:30:00 AM 3 3/23/2009 6:39:00 AM 4 3/23/2009 6:39:00 AM 5 3/23/2009 6:48:00 AM 6 3/23/2009 6:48:00 AM 7 3/23/2009 7:00:00 AM

Hi, I've tried to capture the basics of this problem I'm having. Been working on this for a couple of days and just cannot get past it. As a test of this list software I've attached is a small text file zipped up. I hope it gets through but if it doesn't I'll post the actual text which is only 26 lines. Put it somewhere sensible and change the first line in the code to point

Hi, What is cast telling me when it says the following? Aggregation requires fun.aggregate: length used as default What is 'length'? I've taken a small subset of data and wondered what EnTime vs ExTime might look like. cast is kind enough to give me a table but I don't understand the values in the table. They seem to sum up ro be the same as the total dimension of the data

Hi, In a completely clean account that's never run Wine before I run wine --version. Wine installs a new .wine directory but this Wine directory has no config file. I looked in the 3 obvious files but none of them seem to have an option for changing between OSS, Alsa and JAck. where do I make this setting change now? Thanks, Mark

Sorry for the noise. On 10/23/05, Mark Knecht <markknecht@gmail.com> wrote: > On 10/23/05, Mark Knecht <markknecht@gmail.com> wrote: > > Hi, > > Does anyone know what happened to the --debug option in winebuild? > > It seems to have disappeared in more recent versions of Wine. > > > > I am attempting to build a program that uses winebuild with

Hi, I looked in the language definition and was surprised. Is there really no multi-line/block comment defined in R? I wanted to comment out 20 lines that I'm moving to a function but didn't want to delete them. Is there no defined way to get around using a # on each of the 20 lines? Thanks, Mark

I am trying to pass the result from a javascript function along with the result from a text_field with form_remote_tag. This is what I have so far, but no go: <% form_remote_tag(:url => {:controller => ''requests'', :action => ''create''}, :with => "''data=''+request()", :update => ''request_sent'' )

## rw1031 Version 1.3.1 (2001-08-31) ## > version ## _ ## platform i386-pc-mingw32 ## arch x86 ## os Win32 ## system x86, Win32 ## status ## major 1 ## minor 3.1 ## year 2001 ## month 08 ## day 31 ## language R ## The

Hi, Two easy questions I'm sure. 1) As an example if I use the code require(zoo) then once it's loaded is there a command that lists everything that zoo provides so that I can study the package? Certainly help(zoo) gives me some clues about what zoo does but I'd like a list. Maybe there's a way to query something but in Rgui under Win Vista ls() returns nothing after zoo

Using strptime() and other functions for dates has been very helpful with the kind of data I often work with. However, I haven't found out how time as such should be specified. All my attempts result in time *and* date: >treatment_time<-c("01:02:03","02:03:04") # hours:minutes:seconds >time.2<-strptime(treatment_time,format="%H:%M:%S") >time.2 [1]

Hi, I'm trying to plot two variables in one graph. One ranges between 0 and 1, while the other ranges between 50 and 500. Can I plot them in one graph with similar scale? Thanks Harry [[alternative HTML version deleted]]

When I use the scan function in the Rgui console it works as expected. However it seems that when I put the same command in a script file it doesn't wait for input. Is there an option to scan to make it wait for input when used in a script? Or is there possibly a different function that will do in a script the same sort of thing as scan does in the console? Thanks, Mark

Hi, I made the attached picture by mocking up three separate plots sort of like how I'd like to make a new plot. Hopefully it will get through to the list. Is there a way to do this directly using par somehow? Or one of the other plotting packages? Basically, multiple larger plot above multiple groups of smaller plots? The smaller plots are just par(mrow=c(2,3)) things, and I can

Sometimes it's the simple things... Why doesn't this lag X$x by 3 and place it in X$x1? (i.e. - Na's in the first 3 rows and then values showing up...) The help page does talk about time series. If lag doesn't work on data.frame columns then what would be the right function to use to lag by a variable amount? Thanks, Mark X=data.frame(x=seq(1:10)) X$x1=lag(X$x, 3) X

Hi, I have 15 or 20 functions I've written to convert the sort of data I'm working with. They are currently in their own R file which I load by hand in Rgui before loading and running my main programs. Is there any way to have this file included in my R program like #include might in C? If not is there a simple newbie-type example of how to create a package so I could just say

Hello there fellow R-users, I have received some data which comes in the following format: example1<-"200301" The first 4 digits correspond to the year and the remaining 2 digits correspond to the week of the year. I have tried to convert this to a date by using strptime as follows: strptime(example1,format="%Y%U") where U (looking up strptime) is the week of the

At one time (version 1.7), the code below used to work for converting and extracting based on the Date Time. In version 1.8.1, something changed I know, but I cannot for the life of me figure out what... Data: UserName,RequestDate,PO,OrderDate,ExpDelivDate,Vendor,Total "Woody, Jim",12/19/2002,AP15063,1/7/2003,2/10/2003,Ames ,8570 "Harrold,

Hello, all. I ran across an odd problem while working in R 2.6.0. The command line text follows. Basically, I attempted to convert a character vector of length 13 (in a data frame with 13 rows) from a character representation of dates to a POSIX representation using strptime. strptime returned a vector of length 9, which appears to contain 13 values (!) in the appropriate format. I can't