Displaying 20 results from an estimated 200 matches similar to: "lme Random Effects and Covariates"
2005 Feb 01
3
polynomials REML and ML in nlme
Hello everyone,
I hope this is a fair enough question, but I don’t have access to a copy
of Bates and Pinheiro. It is probably quite obvious but the answer might
be of general interest.
If I fit a fixed effect with an added quadratic term and then do it as
an orthogonal polynomial using maximum likelihood I get the expected
result- they have the same logLik.
2008 Jul 03
1
lines() warning message
I have data that looks like
Year,Recruit,Spawner,Mtempcv
1958,4532,775,0.24125
1959,22996,2310,0.16319
1960,628,2990,0.46056
1961,879,1400,0.33028
1962,14747,1130,0.22618
1963,13205,790,0.20596
1964,31793,1195,0.19229
1965,10621,981,0.20363
1966,22271,870,0.3452
1967,8736,1104,0.27511
1968,8761,883,0.10884
1969,18885,1421,0.17799
1970,10098,1198,0.2106
1971,3394,760,0.22098
1972,1697,1354,0.39461
2010 Nov 16
1
AOV/LME
Hi everyone,
I'm having a little trouble with working out what formula is better to use
for a repeated measures two way anova. I have two factors, L (five levels)
and T (two levels). L and T are both crossed factors (all participants do
all combinations). So, I do:
summary(aov(dat~L*T+Error(participant/(L*T)),data=dat4))
But get different results with:
2013 Sep 09
0
Duplicated genes
Hi,
May be you can try this:
dat1New<-? dat1[!(duplicated(dat1$gene)|duplicated(dat1$gene,fromLast=TRUE)),]
dat2<-dat1[duplicated(dat1$gene)|duplicated(dat1$gene,fromLast=TRUE),]
?lst1<-split(dat2,dat2$gene)
dat3<-unsplit(lapply(lst1,function(x) {x1<- sum(apply(x[,6:32],2,function(y) y[1]>=y[2]));x2<- sum(apply(x[,6:32],2, function(y) y[1]<=y[2])); if(x1>x2) x[1,] else
2012 Mar 10
3
function input as variable name (deparse/quote/paste) ??
Hi all
Say I have a function:
myname=function(dat,x=5,y=6){
res<<-x+y-dat
}
for various input such as
myname(dat1)
myname(dat2)
myname(dat3)
myname(dat4)
myname(dat5)
how should I modify the 'res' line, to have new informative variable name
correspondingly, such as
dat1.res
dat2.res
dat3.res
dat4.res
dat5.res
stored in the workspace.
This is only an example of a complex
2010 Nov 15
1
Executing Command on Multiple R Objects
Hello Everyone -
I want to print a number of results from lme function objects out to a txt
file. How could I do this more efficiently than what you see here:
out2 <- capture.output(summary(mod2a))
out3 <- capture.output(summary(mod3))
out4 <- capture.output(summary(mod5))
out5 <- capture.output(summary(mod6))
out6 <- capture.output(summary(mod7))
2007 Oct 19
1
X matrix deemed to be singular in counting process coxph
Dear all,
I have a question with respect to counting process formulation of the
coxph(survival) model.
I have two groups of observations for which I have partitioned each
observation into two distinct time intervals, namely, entry day till day 13,
and day 13 till death or censorship day (of course the latter only for the
observations that survived the first 13 day interval), and added a
2011 Jul 02
5
How many times occurs
Hi all,
I have a data matrix likein "input.txt"
8 9 2 5 4 5 8 5 6 6
8 9 2 8 9 2 8 9 2 1
8 9 2 5 4 5 8 5 6 4
8 9 2 5 4 5 8 5 6 6
8 9 2 8 9 2 8 9 2 1
8 9 2 5 4 5 8 9 2 2
In this example will be an 6x10 matrix (or data frame)
I want to detect how many times in a row appears this combination 8 follewd
by 9 followed by 2, and create a new matrix with only this number of occurs
then
2012 Jun 06
1
error calling Winbugs using R2WinBugs to run a multi-level model
Dear all,
I'm calling Winbugs (1.4.3) through R2WinBugs (2.1-18 coda_0.14-7) to
fit a switching random walk model, but come up with an instant trap
with the log only displaying 'check('.
I will paste the trap with session info below; I'd be very grateful
for any ideas.
Couple of leads:
1. I presume the problem relates to the r package itself or the way I
call bugs(), because I
2011 Nov 27
1
Simplifying my code
Hi,
I have a pretty simple problem. Here is the code:
dat1=complete(dat.mice,1)
dat2=complete(dat.mice,2)
dat3=complete(dat.mice,3)
dat4=complete(dat.mice,4)
dat5=complete(dat.mice,5)
dat6=complete(dat.mice,6)
dat7=complete(dat.mice,7)
dat8=complete(dat.mice,8)
dat9=complete(dat.mice,9)
dat10=complete(dat.mice,10)
dat11=complete(dat.mice,11)
dat12=complete(dat.mice,12)
2012 Oct 14
6
transforming a .csv file column names as per a particular column rows using R code
Hello all,
I have a .csv file like below.
Tool,Step_Number,Data1,Data2... etc up to 100 columns.
A,1,0,1
A,2,3,1
A,3,2,1
.
.
B,1,3,2
B,2,1,2
B,3,3,2
.
.
...... so on upto 50 rows
where the column "*Tool*" has distinct steps in second column
"*Step_Number*",but both have same entries in Step_Number column.
I want the output like below.
2012 Sep 01
5
R_closest date
Hi,
I have encountered an issue about finding a date closest to another date
So this is how the data frame looks like:
PT_ID IDX_DT OBS_DATE DAYS_DIFF OBS_VALUE CATEGORY
13 4549 2002-08-21 2002-08-20 -1 183 2
14 4549 2002-08-21 2002-11-14 85 91 1
15 4549 2002-08-21 2003-02-18 181 89 1
16 4549 2002-08-21 2003-05-15
2012 Jul 24
5
First value in a row
Hi.
This is likely a trivial problem but have not found a solution.
Imagine the following dataframe:
Lat Lon x1 x2 x3
01 10 NA NA .1
01 11 NA .2 .3
01 12 .4 .5 .6
I want to generate another column that consist of the first value in
each row from columns x1 to x3. That is
NewColumn
.1
.2
.4
Any input greatly appreciated,
Thanks,
Camilo
Camilo Mora, Ph.D.
2012 Jul 29
1
readRDS, In as.double.xts(fishReport$count) : NAs introduced by coercion
Hello,
I looked in the R-help but could not find an archive addressing the
following. I would like to convert a character to numeric after reading a
file with RDS extension. After using as.numeric, I checked if it is
numeric. It was not converted. Please help.
Here is my code
>Report <- readRDS(file="RDS/Report.RDS")
> Report[1:2,]
dive_id date
2013 Apr 08
3
Reshaping a table
Hello all,
I have data in the form of a table:
X Y1 Y2
0.1 3 2
0.2 2 1
And I would like to transform in the form:
X Y
0.1 Y1
0.1 Y1
0.1 Y1
0.1 Y2
0.1 Y2
0.2 Y1
0.2 Y1
0.2 Y2
Any ideas how?
Thanks in advance,
IOanna
[[alternative HTML version deleted]]
2012 Jul 14
2
Arrange two columns into a five variable dataframe
Hi,
I hope that folks can give me some simple approaches to taking the data set
below, which is accumulated in two columns called "long" and "group", then
arrange the data is the "long" column into a data frame containing five
variables: "Group 1", "Group 2", "Group 3", "Group 4", and "Group 5". I am
hoping for a few
2012 Oct 12
3
Columns and rows
Hi,
Could you please advice some easy way to do the following for a dataframe
(header=F) having unequal column- & row- length.
1. Combine/stack/join contents from -
a) multiple rows into one column.
b) multiple columns into one row.
2. Stack contents from multiple columns (or, rows) into one column (or,
row).
Thank you.
Cheers,
Santana
[[alternative HTML
2013 Jan 05
3
Need help with time series data
Dear R users,
Could you share your knowledge on following problem:
Suppose we have dataframe:
ID TIME Data1 Data2 Data3
........... Data700
1. 2013-01-01 00:00:00 34 53 66
............ 55
2. 2013-01-01 00:00:01 333 4 5
............ 50
3. 2013-01-01 00:00:02 and so
2012 Sep 24
3
List creation based on matrix
Hi guys,
It would be great if you could help me with this one...
I'm looking to create a script to convert a matrix of species abundance e.g:
<http://r.789695.n4.nabble.com/file/n4643978/species_matrix.jpg>
into two vectors e.g:
<http://r.789695.n4.nabble.com/file/n4643978/communitylist.jpg>
----------------
If you feel there is no easy answer to this and that it would be
2012 Dec 17
3
Merge more than 2 dataframe
Hello.
I have for example 4 or more dataframe which like such this example:
date value
2006-11 0.4577647
2006-12 NaN
2006-10 0.1577647
2006-11 0.3577647
2006-12 NaN
2007-01 NaN
2007-02 NaN
2007-03 0.2956429
2007-01 0.3677647
2007-02 NaN
They have the same length. I need merge by date undefined number of
dataframes. End result output will look like