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mtext adj= wrong with several las= (PR#7188)

2 messages · Jens Oehlschlägel, Uwe Ligges

Original
Jens Oehlschlägel
# 
No, not yet. But mtext logically is oriented relative to its axis. And it
should behave consistently relative to its axis. 

Whichever solution is choosen finally, I think it is important, that the
default parametrisation will handle multi-line labels such that they are
centered around at= and aligned at line=, whatever side= and las= are
choosen. Beeing forced to tweak with adj= / padj= depending on side= / las=
would be very impractical. This "requirement" is easily fullfilled with
default adj=0.5 if we have mtext's adj= always move along the axis. With a
adj= / padj= solution, different defaults would be needed for the different
combinations of side= and las=.

How does it S+?

Best


Jens


# Thats my problem
txt <- "This are\nfour lines\nof some\nrubish"
y <- barplot(x, axes=FALSE, axisnames=FALSE, horiz=TRUE)
# axis doesn't align it properly
axis(2, label=rep(txt, 5), at=y, las=2, adj=0)
# and no mtext parameters give vertically centered and right adjusted text
mtext(rep(txt, 5), side=2, line=1, at=y, las=2, adj=0)
Uwe Ligges
#
Jens Oehlschl?gel wrote:

            

      
      
      
    

        
Might be nice, but I don't think we can easily change that much in 
mtext()'s behaviour. It is widely used in graphic functions and changing 
the defaults too much will break an incredible amount of code (if 
someone changes mtext() in that manner, I'll unsubsribe from R-help for 
half a year ;-)).

            

      
      
      
    

        
The outdated S-PLUS 4.5 behaves like R does, but the logic is different 
since you have to specify srt rather than las.

Uwe Ligges