Gerrit Eichner
2020-Nov-09 13:06 UTC
[R] [effects] Wrong xlevels in effects plot for mixed effects model when multiline = TRUE
Dear list members,
I observe a strange/wrong graphical output when I set the xlevels
in (e. g.) allEffects for an lmer model and plot the effects with
multiline = TRUE. I have compiled a reprex for which you need the
lmer model and the environment in which the model was fitted. They
are contained in the zip file at
https://jlubox.uni-giessen.de/dl/fiSzTCc3bW8z2npZvPpqG1xr/m-and-G1.zip
After unpacking the following should work:
m <- readRDS("m.rds") # The lmer-model.
G1 <- readRDS("G1.rds") # Environment in which the model
# was fitted; needed by alaEffects.
summary(m) # Just to see the model.
library(effects)
aE <- allEffects(m, xlevels = list(gProt = 1:6 * 30))
# Non-default values for xlevels.
plot(aE) # Fine.
plot(aE, x.var = "Age") # Fine.
plot(aE, lines = list(multiline = TRUE)) # Fine.
plot(aE, lines = list(multiline = TRUE),
x.var = "Age") # Nonsense.
Anybody any idea about the reason, my mistake, or a
workaround? Thx for any hint!
Regards -- Gerrit
PS:
> sessionInfo()
R version 4.0.2 (2020-06-22)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 18363)
Matrix products: default
locale:
[1] LC_COLLATE=German_Germany.1252 LC_CTYPE=German_Germany.1252
[3] LC_MONETARY=German_Germany.1252 LC_NUMERIC=C
[5] LC_TIME=German_Germany.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] effects_4.2-0 carData_3.0-4
loaded via a namespace (and not attached):
[1] Rcpp_1.0.5 lattice_0.20-41 MASS_7.3-53 grid_4.0.2
DBI_1.1.0
[6] nlme_3.1-149 survey_4.0 estimability_1.3 minqa_1.2.4
nloptr_1.2.2.2
[11] Matrix_1.2-18 boot_1.3-25 splines_4.0.2 statmod_1.4.34
lme4_1.1-23
[16] tools_4.0.2 survival_3.2-3 yaml_2.2.1 compiler_4.0.2
colorspace_1.4-1
[21] mitools_2.4 insight_0.9.5 nnet_7.3-14
---------------------------------------------------------------------
Dr. Gerrit Eichner Mathematical Institute, Room 212
gerrit.eichner at math.uni-giessen.de Justus-Liebig-University Giessen
Tel: +49-(0)641-99-32104 Arndtstr. 2, 35392 Giessen, Germany
http://www.uni-giessen.de/eichner