Displaying 4 results from an estimated 4 matches for "je_lemaitre".
2005 Sep 27
2
Binding dataframe with different length in rows and columns
Dear all,
I'm trying to combine in R the two following datasets.
I'm would be very grateful if someone could help me with this problem.
Dataset 1:
X Y Z
1 27 48
2 25 50
3 27 40
4 28 56
Where X is a unique number and Y and Z some variables
Dataset 2:
X I J
1 10 12
1 12 12
1 23 30
1 40 46
2 7 8
2 8 9
2 9 8
3 2 0
4 98 87
4 78 89
Where X IS NOT this time a unique number. I and J are some
2005 Oct 19
3
sqlQuery and string selection
Dear alls,
Could someone tell me how to select a subset of string observations (e.g.
"females" in a sex column) with sqlQuery in the RODBC library?
Indeed, I'm trying to select a subset of observations on my access database
with:
female<-sqlQuery(mychannel,"SELECT Micromammiferes.sex
FROM Micromammiferes
WHERE (((Micromammiferes.sex)="females"));")
The sql
2005 Jan 29
1
Bootstrapped eigenvector
Hello alls,
I found in the literature a technique that has been evaluated as one of the
more robust to assess statistically the significance of the loadings in a
PCA: bootstrapping the eigenvector (Jackson, Ecology 1993, 74: 2204-2214;
Peres-Neto and al. 2003. Ecology 84:2347-2363). However, I'm not able to
transform by myself the following steps into a R program, yet?
Can someone could help
2005 Nov 02
1
nlminb failed to converge with lmer
Dear all,
I'm building binomial mixed-model using lme4 package.
I'm able to obtain outputs properly except when I include two particular
variables: date (from 23 to 34; 1 being to first sampling day) and Latitude
(UTM/100 000, from 55.42 to 56.53). No "NA" is any of those variables.
In those cases, I get the warning message: "nlminb failed to converge"
I tried to