[R] Problem with Dates :-(

Dear R users, I know, the question is bit old one. :-( Ok. I have a table with say three columns and 70 rows. The second column has dates in format dd.mm.yy (i.e. 01.10.07 indicating record for October 1, 2007). I read the text file, containing the records. Now, I want to find out the weekday

[R] help regarding converting the available date in right date

Dear R users, I have a table with say three columns and 70 rows. The second column has dates in format dd.mm.yy (i.e. 01.10.07 indicating record for October 1, 2007). I read the text file, containing the records. Now, I want to find out the weekday for each date. However, I cannot do so.

[R] difficulty in starting time sequence from 00:00:00

Dear R-experts, Need your help. Dear R- Experts, Seek your help. I created a time sequence using: x[i] -chron(dates, tt, format=c(dates=y-m-d, tt=h:m:s)) first element in the list is displayed as: (09-01-01 00:00:00) Further elements are: (09-01-01 00:01:00) (09-01-01 00:02:00) (09-01-01

[R] Ingore this message. I have already solved the problem..

Ingore this message. I have already solved the problem.. Regards, Suresh Suresh_FSFM wrote: Dear R-experts, Need your help. Dear R- Experts, Seek your help. I created a time sequence using: x[i] -chron(dates, tt, format=c(dates=y-m-d, tt=h:m:s)) first element in the list

[R] How to create sequence of constant time interval

Dear R-Experts, seek your help. There are two parts I want to deal with. 1) I want to create a time interval of say, 30 minutes starting from 00:00:00 hrs Thus at the end, I want to create sequence: 00:00:00 00:30:00 01:00:00 01:30:00 .. .. How to do so ? Later, I want to change the

Re: [R] How to create sequence of constant time interval

Thank you very much for the precise response. Regards, Suresh Suresh_FSFM wrote: Dear R-Experts, seek your help. There are two parts I want to deal with. 1) I want to create a time interval of say, 30 minutes starting from 00:00:00 hrs Thus at the end, I want to create sequence

[R] is there any way to find match with tolerance

Hello all, suppose I have a time-stamp: 16-02-2009 00:20:00 and other array that stores lot of time values. My tolerance limit = +5 minutes I would like to find values from this array matching with the value: 16-02-2009 00:20:00 + tolerance Before I write some function, I would like to know:

Re: [R] is there any way to find match with tolerance

Thank you for the positve response. Gabor Grothendieck wrote: ?all.equal has a tolerance argument. On Mon, Feb 16, 2009 at 8:41 AM, Suresh_FSFM suresh.ghals...@gmail.com wrote: Hello all, suppose I have a time-stamp: 16-02-2009 00:20:00 and other array that stores lot of time

[R] problem of local ! :-(

Dear R- Experts, Seek your help. I created a time sequence using: x[i] -chron(dates, tt, format=c(dates=y-m-d, tt=h:m:s)) first element in the list is displayed as: (09-01-01 00:00:00) Now, I want to store this value as date. If I use: format.Date(x[1],%y-%m-%d %H:%M:%S), I expect following

[R] How to print console output statements from within script or function?

Dear R-Experts, Seek your help. I am calling say 20 functions one by one in one script. To reach the end, it takes approximately one hour. While R is performing calculations, I would like to print console output statements to track the progress.(e.g. Result of function-1 is done) Note: I have

[R] Tip for performance improvement while handling huge data?

Hello All, For certain calculations, I have to handle a dataframe with say 10 million rows and multiple columns of different datatypes. When I try to perform calculations on certain elements in each row, the program just goes in busy mode for really long time. To avoid this busy mode, I split

Re: [R] How to print console output statements from within script or function?

Yes. I am running R on windows. However, I did not understand your question Is our output buffered? No. I did not use flush.console function. Suppose I am handling dataframe with 10 million rows, and performing some calculations using For loop from row 1 to end, then where should I use this

Re: [R] Tip for performance improvement while handling huge data?

Ok. Thank you. As of now, vectorization option is feasible. Was not sure to handle this way. would try. Regards, Suresh Philipp Pagel-5 wrote: For certain calculations, I have to handle a dataframe with say 10 million rows and multiple columns of different datatypes. When I try to

[R] help regarding storing time difference values in same unit?

Dear R-Experts, Seek your help. In a List object e.g. Time_duration[[]], I am storing differece between two time-stamps (start-time and end-time) for a certain event. Time difference does not remain constant for, say, 10 observations. Each time, the time difference is given in different time

Re: [R] help regarding storing time difference values in same unit?

difftime(x[2], x[1], units='secs') Time difference of 5367600 secs On Thu, Feb 5, 2009 at 4:40 AM, Suresh_FSFM suresh.ghals...@gmail.com wrote: Dear R-Experts, Seek your help. In a List object e.g. Time_duration[[]], I am storing differece between two time-stamps (start-time and end

Re: [R] How to declare an array with columns storing different datatypes/precision

wrote: On 2/4/2009 8:57 AM, Suresh_FSFM wrote: Dear R- Experts, Seek your help. I want to creata data as follows. Ref_array with 4 columns. 1st column should store data of precision: 8.4 (i.e. 8 digits before decimal point and 4 digits after decimal points) 2nd column: should store data

[R] How to declare an array with columns storing different datatypes/precision

Dear R- Experts, Seek your help. I want to creata data as follows. Ref_array with 4 columns. 1st column should store data of precision: 8.4 (i.e. 8 digits before decimal point and 4 digits after decimal points) 2nd column: should store data of type date -mm-dd hh:mm:ss 3rd column: only

Re: [R] data editor in R- could it be improved?

Hi ! I am using Tinn R data editor. This is wonderful and also thin one. Try this. I guess, yu will find what you are looking for. Regards, Suresh Simon Pickett-4 wrote: Hi all, I've used R for basic programming and data management for a few years now. One of the things that I think

[R] How to subtract 2 days from a variable storing particular date

Dear R- Exerts, Seek your help. Suppose I have a variable X that stores a date: 2008-12-15 CET Now, I want to subtract 2 days (better two working days) from value stored in X. Please let me know how to do so. Another variable Y stores timestamp as: 2008-11-28 00:09:00 I want to subtract 2 days

Re: [R] How to subtract 2 days from a variable storing particular date

Great ! Thanks a lot for prompt and positive response. Best Regards, Suresh Gabor Grothendieck wrote: Try this: now - Sys.time() seq(now, length = 2, by = -2 days)[2] and see R News 4/1 for more on dates. On Tue, Feb 3, 2009 at 2:48 PM, Suresh_FSFM suresh.ghals...@gmail.com

[R] How to collect arrays in an array?

Dear R-Experts, Seek your help. Please let me know how arrays of different sizes can be collected in one array. suppose I want to collect following arrays in one array. How can I do so? array(1): #row=3, #col=4(these columns store data of different types) array(2): #row=6, #col=4 array(3):

Re: [R] How to collect arrays in an array?

stephen sefick wrote: why not a list? On Fri, Jan 30, 2009 at 10:10 AM, Suresh_FSFM suresh.ghals...@gmail.com wrote: Dear R-Experts, Seek your help. Please let me know how arrays of different sizes can be collected in one array. suppose I want to collect following arrays in one array

Re: [R] How to collect arrays in an array?

not ensure that a reasonable answer can be extracted from a given body of data. ~ John Tukey -Oorspronkelijk bericht- Van: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] Namens Suresh_FSFM Verzonden: vrijdag 30 januari 2009 16:45 Aan: r-help@r-project.org Onderwerp: Re