Not sure if this has already been reported but I think that there might
be a bug in mtext that causes the text in a plot to be duplicated under
a narrow set of circumstances.
Here is a reproducible example.
df1 <- data.frame(V1=rnorm(100))
hist(df1$V1)
mtext("Test", side=1, line=4, adj=c(1,0)) # causes text to appear
twice
This does not appear to happen if adj=c(0,0) or if the adj argument is
removed altogether:
hist(df1$V1)
mtext("Test", side=1, line=4, adj=c(0,0))
Furthermore, it looks like using the "at" argument causes the spacing
between the duplicated text to disappear:
hist(df1$V1)
mtext("Test", side=1, line=4, at=0, adj=c(1,0))
Some additional information related to my R installation.
sessionInfo()
R version 3.2.3 (2015-12-10)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 8.1 x64 (build 9600)
locale:
[1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United
States.1252 LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C LC_TIME=English_United
States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] rj_2.0.3-2
loaded via a namespace (and not attached):
[1] tools_3.2.3
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