R help - Nov 2024 - Remove all box around a plot except bottom line (base graphics)

To make the plot clearer I have removed the axes but I wish to remove 
all the boz except the bottom horizontal line. Using the bty parameter 
does not seem to enable me to just leave the horizontal line at the 
foot. I can get the "l" version to remove everything except the left 
hand side and the base. I could also remove the entire box but that 
looks odd. Am I reading the documentation incorrectly or is it really 
impossible?

-- 
Michael

On 2024-11-28 8:36 a.m., Michael Dewey wrote:
> To make the plot clearer I have removed the axes but I wish to remove
> all the boz except the bottom horizontal line. Using the bty parameter
> does not seem to enable me to just leave the horizontal line at the
> foot. I can get the "l" version to remove everything except the
left
> hand side and the base. I could also remove the entire box but that
> looks odd. Am I reading the documentation incorrectly or is it really
> impossible?
> 
It's not something that `bty` can specify or `box()` can do, but you can 
draw a line using lines() or segments().  For example:

  plot(rnorm(100), yaxt="n", bty="n")
  usr <- par("usr")
  lines(usr[c(1,2)], usr[c(3,3)], xpd = TRUE)

You might not even need the lines() call if you don't care how far the 
axis extends.

Duncan Murdoch

Dear Michael,

Isn't the axis() function what you're looking for?

plot(rnorm(10), rnorm(10), axes=FALSE)
axis(1)
 
see help(axis)

Yours.
Olivier.


On Thu, 28 Nov 2024 13:36:21 +0000
Michael Dewey <lists at dewey.myzen.co.uk> wrote:
> To make the plot clearer I have removed the axes but I wish to remove 
> all the boz except the bottom horizontal line. Using the bty
> parameter does not seem to enable me to just leave the horizontal
> line at the foot. I can get the "l" version to remove everything
> except the left hand side and the base. I could also remove the
> entire box but that looks odd. Am I reading the documentation
> incorrectly or is it really impossible?
> 
> -- 
> Michael
> 
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-- 
  Olivier Crouzet, PhD
  http://olivier.ghostinthemachine.space
  /Ma?tre de Conf?rences/
  @LLING - Laboratoire de Linguistique de Nantes
    UMR6310 CNRS / Universit? de Nantes