Hi,
I am confused.
As far as I can tell, only the first day is selected randomly from your
dataset. The subsequent 24 days are deterministic, since they need to be
consecutive days from the first day, for a total of 25 consecutive days.
Thus, all you need to do is to randomly select 1 day fro
Hi Jim and everyone else,
Mhm, no this is not what I am looking for. I think in your way I would
randomly sample two values of day 1 and of day 2. But I want the
opposite: I want to randomly draw two successive (!) days and put those
values in a new dataframe to continue working with them.
In
Ah wow, that answers many questions, thanks!
On Thu, Dec 6, 2018 at 4:41 PM Jeff Newmiller
wrote:
> AFAIK this receiver-side responsibility to specify the text/binary status
> of the file is particularly a problem with the "ftp://"; protocol because
> it does not use MIME file encoding (which "h
Hi Viechtbauer and Micheal;
Thanks so much for writing. It is much appreciated.
Regards,
Greg
On Fri, Dec 7, 2018 at 6:16 AM Viechtbauer, Wolfgang (SP) <
wolfgang.viechtba...@maastrichtuniversity.nl> wrote:
> Dear Greg,
>
> I am not sure if I understand your question. If you are asking how to
Dear All;
I sincerely apologize for TYPOS. My question is that:
Does anyone know any R library that runs meta-analysis differently for
Sensitivity and Specificity if I have only the following info in my data
set?
Once again my apologies for the mistake in my earlier email.
Regards,
Greg
specif
myfirst <- sample( seq.int( nrow(myframe)-1 ), 1 )
mysample <- myframe[seq( myfirst, myfirst+1),]
mysample
On December 7, 2018 2:24:11 AM PST, Dagmar Cimiotti
wrote:
>Hi Jim and everyone else,
>
>Mhm, no this is not what I am looking for. I think in your way I would
>randomly sample two values
Dear Greg,
I am not sure if I understand your question. If you are asking how to do this
in R, then one could use the metafor or meta package for this. The specificity
and sensitivity values are proportions, so one would usually meta-analyze them
after a logit transformation. But all of the spe
Dear Greg
I think you are going to need to supply more information. WHat do you
mean by "in SAS differently"? If you just want to do an analysis using
the Reitsma model then there are options in R of course.
https://CRAN.R-project.org/view=MetaAnalysis
for further questions may I suggest usi
Hi Jim and everyone else,
Mhm, no this is not what I am looking for. I think in your way I would
randomly sample two values of day 1 and of day 2. But I want the
opposite: I want to randomly draw two successive (!) days and put those
values in a new dataframe to continue working with them.
I
Hi Dagmar,
This will probably involve creating a variable to differentiate the
two days in each data.frame:
myframe$day<-as.Date(as.character(myframe$Timestamp),"%d.%m.%Y %H:%M:%S")
days<-unique(myframe$day)
Then just sample the two subsets and concatenate them:
myframe[c(sample(which(myframe$da
Dear all,
I have data from a time span like this:
myframe <- data.frame (Timestamp=c("24.09.2012 09:00:00", "24.09.2012
10:00:00","25.09.2012 09:00:00",
"25.09.2012 09:00:00","24.09.2012 09:00:00",
"24.09.2012 10:00:00"),
Event=c(50,60
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