Displaying 20 results from an estimated 20000 matches similar to: "Changing Date Variables as Continuous Variables"
2011 Jul 08
2
Excel export date format
Hi folks,
I have been tormented for some time by Excel's habit of exporting dates
to CSV files as mm/dd/yyyy format even if the dates are formatted
dd/mm/yyyy in the display. What's worse, if there are dates that are of
ambiguous (6/6/2011) and unambiguous (16/6/2011) format in the same
column, Excel reformats the unambiguous dates and leaves the ambiguous
ones as they were! Yesterday
2012 Oct 23
3
Error in contrasts message when using logistic regression code.
I have a rather large data set (about 30 predictor variables)
I need to preform a logistic regression on this data. My response variable
is binary.
My code looks like this:
mylogit <- glm(Enrolled ~ A + B + C + ... + EE, data = data, family =
binomial(link="logit"))
with A,B,C, ... as my predictor variables. Some categorical, some
continuous, some binary.
I run the code and get
2007 Apr 23
3
How to change Date format
Hi all,
I am using InstantRails with MySQL-Front. Date is stored in format
yyyy-mm-dd
in database. I want to retrieve and show date in dd-mm-yyyy in my
view.rhtml.
How can I change it to dd-mm-yyyy form.
Please help me out.
Thanks
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2012 Nov 08
3
Obtaining R-squared value in Logistic Regression
I do not see an R-squared value after preforming the glm regression.
Is there a separate command for this?
Thanks
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2005 Aug 16
2
set date format in wine
Hi list,
I want to run a windows app which saves a date format in a text file.
When this application is run in windows, it uses the date format
dd-mm-yyyy hh:mm:ss (24 hour clock).
However, when I run it under wine, it saves dates in the wrong date
format: mm/dd/yyyy h:mm:ss (so, 12 hour clock with am/pm).
Is there a way to set wine up that it uses another date format?
I'm using RedHat
2012 Sep 16
1
possible TZ bug in parseISO8601 - "Error in if (length(c(year, month, day, hour, min, sec)) == 6 && c(year, : [...]"
Hey all,
Virgin post to this list - hope I've got it right ;o)
I've been learning R intensively the last two weeks and gone from newbie
status to *reasonably* comfortable with it.
Here's an issue I just cannot solve however as it appears to be some kind
of bug in R itself. But I won't claim that for sure.
I have a function as follows:
FindHighRow <- function(searchVector,
2007 Aug 07
1
how to convert decimal date to its equivalent date format(YYYY.mm.dd.hr.min.sec)
Hello R Users,
How to convert decimal date to date as YYYY.mm.dd.hr.min.sec
For example, I have decimal date in one column , and want to convert and
write it in equivalent date(YYYY.mm.dd.hr.min.sec) in another next six
columns.
1979.000000
1979.020833
1979.041667
1979.062500
Is it possible in R ?
Kindly help,
Regards,
Yogesh
--
Dr. Yogesh K. Tiwari,
Scientist,
Indian Institute
2006 Jul 17
2
european date format
hi, overhere users go nuts if they have to enter the date in iso format,
so i have to make my applications in such a way that not only dates are
displayed in the "dd-mm-yyy" format but also can be entered in that way.
somewhere i found this code to put in the environment script:
ActiveSupport::CoreExtensions::Time::Conversions::DATE_FORMATS.update(
:default => ''%d/%m/%Y
2008 Jun 04
2
How to change ActiveRecord date format conversion
I am using custom control for entering a date on the form. My date
format is dd.mm.yyyy and this is also what the control returns to
program. But ActiveRecord expects date to be formated as mm.dd.yyyy and
thus saves wrong value to database.
I have implemented method which corrects date fields prior to save to
database, but it is clumsy. There must be a solution to configure
ActiveRecord so it
2012 Mar 13
4
Converting factor data into Date-time format
Dear R-user,
I have read a dataset from .csv file into R. This dataset includes one
column containing some data in 'date and time' format, e.g. 'dd/mm/yyyy
hh:mm'.
These data were automatically read and saved as 'factor' in R. When I was
trying to produce some plots (such as time series) with the above 'date and
time' on x-axis, it caused some disodering problem,
2009 Dec 28
4
How to change the default Date format for write.csv function?
Hi,
I have a data.frame containing a Date column. When using write.csv()
function to generate a CSV file, I always get the Date column formatted as
"YYYY-MM-DD". I would like to have it formatted as "MM/DD/YYYY", but
could not find an easy way to do it. Here is the test code:
d <- data.frame(ticker=c("IBM", "IBM"), date =
2006 Jun 06
4
change 1-06-2006 to 1st July 2006 (date formatting)
Hi,
I have a few dates coming from the datebase in the format ''DD-MM-YYYY''
How can I change this in to a more human readable format?
such as 1st July 2006
Thanks
Scott
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Posted via http://www.ruby-forum.com/.
2006 May 16
9
Date transform
hi all,
i want my users to enter a date in "ddmmyyyy" format, do someone know
how may i transform it in "yyyy-mm-dd" in the controler before i add it
to the base please?
thks
irong
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Posted via http://www.ruby-forum.com/.
2006 Jun 15
4
parse only seem to understand US date format
I''ve tried Time.parse() and DateTime.parse() but they interpret the date
as US format. Is there any way to tell it to interpret as dd/mm/yyyy?
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Posted via http://www.ruby-forum.com/.
2009 Mar 24
2
two different date formats in the same variable
How does one convert to a date format when survey respondents have
used two different date formats whilst entering their data. There were
clearly told to use mm/dd/yyyy but humans being humans some entered
mm/dd/yy. There was even validity checks on the forms but I allowed
them to be overridden since the data is more holy than the format.
The data was downloaded as a csv and read.csv was used to
2010 Jul 29
4
reading dates in Excel into R
I am reading dates in Excel2007 into R.
Here are the functions I used:
library(RODBC)
channel<-odbcConnectExcel2007("myfile.xlsx")
tmp<-sqlFetch(channel,"1",as.is=T)
The dates in myfile.xlsx are all in this format: mm/dd/yyyy. But when I read it to R, some columns look like "yyyy-mm-dd 00:00:00", some columns look like "yyyy-mm-dd", and some
2006 May 04
3
Date find help please.
Here''s my problem.
I have an ''Item'' model with a date column called "inserted_on" formatted as
"yyyy-mm-dd hh:mm:ss:t". I want to find all records that were inserted more
than 30 days ago. How would I say that using the Item.find ( :all .....)
method? I don''t fully understand the syntax. I tried
@result = Item.find( :all, :conditions =>
2002 Jun 12
2
Getting at the "default Windows short date"
I've had some great success with wine recently, but am a little unsure about
the best way to attack this problem.
I want to run an accounting program called Cash Flow Manager under wine.
(As it happens, this program is our last dependency on Windows apps in our
office, everything else is OpenOfifce.org and RH Linux).
When I run the application:
wine /c/Program\
2004 Feb 02
3
sorting by date
Hello,
I have set up a data.frame and one of the columns contains a date of the
form (with slashes as separators):
mm/dd/yyyy
I would like to use formulas on other columns in the data.frame organized
by date, for example:
tapply(var1, sort(date), mean)
However, when I try sort(date) it sorts based on the first two entries in
the date field:
9/1/2001 9/1/2002 9/1/2003 9/2/2001 ...
5.6 7.5
2010 Apr 14
1
[PATCH] Change the date format used in RHEV OVF output
Date formats were previously undefined in RHEV's OVF output. They are now
defined as: 'yyyy/mm/dd hh:mm:ss'.
This change updates dates output by virt-v2v to use the new format.
---
lib/Sys/VirtV2V/Target/RHEV.pm | 19 ++++++++++---------
1 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/lib/Sys/VirtV2V/Target/RHEV.pm b/lib/Sys/VirtV2V/Target/RHEV.pm
index