Hello R user,
I have a data set from a longitudinal study ( sample below) where
subjects are followed over time. Second column (status) contains info
about if subject is dead or still in the study and third column is
time measured in the week. Here is what I need: if status is not dead
or unknown
Hello,
I am a new R -user and request your help for the following problem.
I need to merge two dataset of longitudinal study which has two column
(id and respose) common. when I used merge option to join the datas
side be side, because of the repeated subject id, I got larger data
set which is not
Hello R User,
I have a data set where subject( Id) are frequently measured. For
example, the size of the data set is 75 by 2 and has following
frequency distribution.
idfreq
1 30
2 20
3 25
I want to create a variable (say seq) containing sequential count for
each id. I mean va
Hello R help,
I have a question similar to what is posted by someone before. my
problem is that Instead of last assessment, I want to choose last two.
I have a data set with several time assessments for each participant.
I want to select the last assessment for each participant. My dataset
looks
Dear R usuer,
I need to fit logistic regression with binomial response. The
objective is to compare treatment groups controlling other categorical
and continuous predictors. The GLM procedure with
family=binomial(Logit) gives me parameters estimates as well as odd
ratios. But objective is to compa
Hello R user,
Data below represent year in decimal. I would like to catagorize it
in such a way that any valye [0,1] goes to catagory 1 , (1,2] goes to
catagory 2 and so on..
Any suggestion how it can be done with if else statement or any other way?
2.880556
0.616667
5.08
0.858333
0.47
2.
V1 cat1 cat2
> #1 2.88055623
> #2 0.61666711
> #3 5.0856
> #4 0.85833311
> #5 0.4711
> #6 2.93611123
> A.K.
>
>
>
>
> ----- Original Message -
> From: PIKAL Petr
> To: arun ; Jorge I Velez ;
> b
Hello user,
I have large data containing subject id, time and response where
subjects are measured repeatedly. However some time are duplicates. I
only want data with unique time points per id. I mean if time is
repeated, then take only one.
Here is a sample data.
id timeres
1 2
Hello R usuer,
The code given below superimposes a pie diagram on another plot
containing some points. However, I would like to center the pie
diagram on the xy location on the plot, but not on the center. is
there any way to re-center pic diagram.
Any suggestion or better alternative are highly a
Hello R User,
In the sample data given below, time is recorded for each id
subsequently. For the analysis, for each id, I would like to set 1st
recorded time to zero and thereafter find the difference from previous
time. I.e. for ID==1, I would like to see Time=0,3,1,3,6. This needs
to be implement
Hello R user,
I have created two plots (attached!) using the codes below
and would like to merge these figures in one. any suggestions are highly
appreciated!
Thanks,
plot(graph1$yod,graph1$xod,data=graph1)
dfx = data.frame(ev1=graph1$xod, ev2=graph1$yod, ev3=abs(graph1$dif))
symbols(x=dfx$ev1, y
11 matches
Mail list logo
