On Aug 17, 2011, at 11:19 AM, Bert Gunter wrote:
(Note: Posted at the suggetsion of David Winsemius, to whom I already
sent a private reply).
Inline Below.
On Wed, Aug 17, 2011 at 7:34 AM, David Winsemius <dwinsem...@comcast.net
> wrote:
On Aug 17, 2011, at 9:15 AM, mike1989 wrote:
Dear R Users,
I am writing code to present my output data (I'm using Lattice
Package).
However, it's essential for me to control space between barchart and
legend.
I've read the package's specification, but unfortunately I haven't
spot
the
information how to do this. Here's the code I've written:
require(lattice)
barchart(mymatrix[,1:ncol(mymatrix)], horizontal=FALSE,
box.width=1, stack=TRUE, border=FALSE, par.settings =
simpleTheme(col=my_colors), lty="dotted", lend="butt",
key=list(space="bottom",
columns=ncol(mymatrix),
points=FALSE,
text=list(colnames(mymatrix)),
rectangles=list(border=FALSE,size=2,
col=my_colors[1:ncol(mymatrix)]),
border=FALSE, rows=1, between=0.25))
a) You ought to use spaces and linefeeds for readability
b) It appears you are using the key option so the documentation is
in the
.../key section regarding placement:
"Alternatively, [and this comes just after the description of the
space=
options] the key can be positioned inside the plot region by
specifying
components x, y and corner. x and y determine the location of the
corner of
the key given by corner, which is usually one of c(0,0), c(1,0),
c(1,1) and
c(0,1), which denote the corners of the unit square. Fractional
values are
also allowed, in which case xand y determine the position of an
arbitrary
point inside (or outside for values outside the unit interval) the
key."
Now I will admit that I did not understand what that last sentence
regarding
an "arbitrary point inside the key" might mean on the first three
readings.
I'm hoping it means a "user-determined point inside the _plot_". I
also
cannot figure out from that paragraph or the one that follows which
corner
of the key is being located.
David.
I don't think so. Here's my translation of the Help file:
There are 2 coordinate systems at play here, that of the plot and that
of the key. The plot's coordinate system is native, and is used by the
x and y components of the space component of key. The key's coordinate
system is 0 to 1 on both axes and specifies the key coordinate that is
placed at the x and y plot location. Hence, space = list (x=10, y =
2,corner = c(1,0)) says "place the right lower corner of the key at
plot location (10,2). Replacing the corner component by c(.5,.5)
means "place the center of the key at that location on the plot."
Thanks, Bert;
That did clarify for me that the x and y arguments were specifying the
plot coordinates (expressed in data variable units) of a particular
point of the key box (specified in unit key-coordinates). Thanks for
lessening my overall confusion.
--
David Winsemius, MD
West Hartford, CT
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