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
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.
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
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
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
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
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:
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
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
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
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
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
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
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
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
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
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
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
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
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
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):
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
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
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