Thank you Jean, Petr, Terry, William and everyone else who thought about
my problem.
It is sooo good that this mailing list exists!
I solved my problem using Petr's suggestion, that didn't seem so
complicated and worked fine for me.
Thanks again and have a great weekend,
Dagmar
Am 02.10.2014
Hi
If Jean's guess is correct, after simple changing Timestamp to real date
see ?strptime and ?as.POSIXct
you can use
result - merge(mydata, myframe, all=TRUE)
use function ?na.locf from zoo package to fill NAs in Event column and get rid
of all rows with NA in location e.g. by
Hi
So if I understand correctly, you want to spread value high to times 5
minutes before its occurrence and 5 minutes after its occurrence.
If your dates are not extremely big you can prepare its expanded version and
use code suggestions I sent previously
myframe - data.frame
I've attached two functions used locally. (The attachments will be stripped off of the
r-help response, but the questioner should get them). The functions neardate and
tmerge were written to deal with a query that comes up very often in our medical
statistics work, some variety of get the
Hi Terry,
Some of that combination of sort() and approx() can be done by
findInterval(), which may be quick enough that you don't need the
'thinning' part of the code.
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Fri, Oct 3, 2014 at 6:05 AM, Therneau, Terry M., Ph.D.
thern...@mayo.edu
Hello! I hope someone can help me. It would save me days of work. Thanks in
advance!
I have two dataframes which look like these:
myframe - data.frame (Timestamp=c(24.09.2012 09:00:00, 24.09.2012
10:00:00,
24.09.2012 11:00:00), Event=c(low,high,low) )
myframe
mydata - data.frame (
Dagmar,
Can you explain more fully why rows 1, 2, and 5 in your result are low
and rows 3 and 4 are high? It is not clear to me from the information
you have provided.
result[c(1, 2, 5), ]
Timestamp location Event
1 24.09.2012 09:05:011 low
2 24.09.2012 09:49:502
Dear Jean and all,
I want all lines to be low, but during times 9:55 - 10:05 a.m (i.e. a
timespan of 10 min) I want them to be high.
In my real data low and high refer to lowtide and hightide in
the waddensea and I want to assign the location of my animal at the time
it was taken to the tide
Thanks, Dagmar.
So, shouldn't row 3 with a time of 09:51:01 be low and not high?
Jean
On Thu, Oct 2, 2014 at 4:25 PM, Dagmar ramga...@gmx.net wrote:
Dear Jean and all,
I want all lines to be low, but during times 9:55 - 10:05 a.m (i.e. a
timespan of 10 min) I want them to be high.
In my
9 matches
Mail list logo
