Certainly, you will want to set zlab="".
mtext() is quite flexible; you can control distance to the
axis with line=1.5, say. But remember that mtext()
is a 2-dim graphics function - it looks at your plot as
a 2-d plot. That's why I made the comment about your
z-axis having to be fairly close to vertical on the page.
Try the first example in ?persp and follow the call with
mtext("my z label", side=2). Because of the tilt of
the z-axis, this looks a bit strange (to me).
-Peter Ehlers
Geoffrey William Heard wrote:
Much thanks David and Peter
I thought about mtext, but didn't try it, as was unsure what the
appropriate 'side' value would be. Any thoughts?
Cheers
Geoff
-----Original Message-----
From: Peter Ehlers [mailto:ehl...@ucalgary.ca]
Sent: Wednesday, 7 October 2009 1:43 AM
To: David Winsemius
Cc: Geoffrey William Heard; r-help@r-project.org
Subject: Re: [R] 'persp' query
David Winsemius wrote:
On Oct 6, 2009, at 4:46 AM, Geoffrey William Heard wrote:
Hi All
I'm creating some 3-D plots using the function 'persp', and have a
query regarding the ability to make changes to the label of the
z-axis.
There are two things I would like to do. First, the default setting
places the label a little close to the axis for my liking. Is there
any way of moving the label? I've tried adjustments with 'mgp' in
'par', but without success. The second is to change the direction of
the label. Currently it reads top to bottom, whereas I would like it
to read bottom to top, as per a y-axis on a standard plot. Is there
anyway of doing so?
?mtext # and use the adj argument
Good idea. This works well if your z-axis is fairly vertical
on you plot.
-Peter Ehlers
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