| Line 51... |
Line 51... |
| 51 |
\emph{parallel} (\sQuote{horizontal}) to the reading direction. If
|
51 |
\emph{parallel} (\sQuote{horizontal}) to the reading direction. If
|
| 52 |
this is not a finite value, the default is used (centring for
|
52 |
this is not a finite value, the default is used (centring for
|
| 53 |
strings parallel to the axis, justification of the end nearest the
|
53 |
strings parallel to the axis, justification of the end nearest the
|
| 54 |
axis otherwise).}
|
54 |
axis otherwise).}
|
| 55 |
\item{padj}{adjustment for each tick label \emph{perpendicular} to the
|
55 |
\item{padj}{adjustment for each tick label \emph{perpendicular} to the
|
| 56 |
reading direction. For labels parallel to the axes, \code{padj=0}
|
56 |
reading direction. For labels parallel to the axes, \code{padj = 0}
|
| 57 |
means right or top alignment, and \code{padj=1} means left or bottom
|
57 |
means right or top alignment, and \code{padj = 1} means left or bottom
|
| 58 |
alignment. This can be a vector given a value for each string, and
|
58 |
alignment. This can be a vector given a value for each string, and
|
| 59 |
will be recycled as necessary.
|
59 |
will be recycled as necessary.
|
| 60 |
|
60 |
|
| 61 |
If \code{padj} is not a finite value (the default), the value of
|
61 |
If \code{padj} is not a finite value (the default), the value of
|
| 62 |
\code{par("las")} determines the adjustment. For strings plotted
|
62 |
\code{par("las")} determines the adjustment. For strings plotted
|
| Line 88... |
Line 88... |
| 88 |
\details{
|
88 |
\details{
|
| 89 |
The axis line is drawn from the lowest to the highest value of
|
89 |
The axis line is drawn from the lowest to the highest value of
|
| 90 |
\code{at}, but will be clipped at the plot region. By default, only
|
90 |
\code{at}, but will be clipped at the plot region. By default, only
|
| 91 |
ticks which are drawn from points within the plot region (up to a
|
91 |
ticks which are drawn from points within the plot region (up to a
|
| 92 |
tolerance for rounding error) are plotted, but the ticks and their
|
92 |
tolerance for rounding error) are plotted, but the ticks and their
|
| 93 |
labels may well extend outside the plot region. Use \code{xpd=TRUE}
|
93 |
labels may well extend outside the plot region. Use \code{xpd = TRUE}
|
| 94 |
or \code{xpd=NA} to allow axes to extend further.
|
94 |
or \code{xpd = NA} to allow axes to extend further.
|
| 95 |
|
95 |
|
| 96 |
When \code{at = NULL}, pretty tick mark locations are computed internally
|
96 |
When \code{at = NULL}, pretty tick mark locations are computed internally
|
| 97 |
(the same way \code{\link{axTicks}(side)} would) from
|
97 |
(the same way \code{\link{axTicks}(side)} would) from
|
| 98 |
\code{\link{par}("xaxp")} or \code{"yaxp"} and
|
98 |
\code{\link{par}("xaxp")} or \code{"yaxp"} and
|
| 99 |
\code{\link{par}("xlog")} (or \code{"ylog"}). Note that these
|
99 |
\code{\link{par}("xlog")} (or \code{"ylog"}). Note that these
|
| 100 |
locations may change if an on-screen plot is resized (for example, if
|
100 |
locations may change if an on-screen plot is resized (for example, if
|
| 101 |
the \code{plot} argument \code{asp} (see \code{\link{plot.window}}) is set.)
|
101 |
the \code{plot} argument \code{asp} (see \code{\link{plot.window}}) is set.)
|
| 102 |
|
102 |
|
| 103 |
If \code{labels} is not specified, the numeric values supplied or
|
103 |
If \code{labels} is not specified, the numeric values supplied or
|
| 104 |
calculated for \code{at} are converted to character strings as if they
|
104 |
calculated for \code{at} are converted to character strings as if they
|
| 105 |
were a numeric vector printed by \code{\link{print.default}(digits=7)}.
|
105 |
were a numeric vector printed by \code{\link{print.default}(digits = 7)}.
|
| 106 |
|
106 |
|
| 107 |
The code tries hard not to draw overlapping tick labels, and so will
|
107 |
The code tries hard not to draw overlapping tick labels, and so will
|
| 108 |
omit labels where they would abut or overlap previously drawn labels.
|
108 |
omit labels where they would abut or overlap previously drawn labels.
|
| 109 |
This can result in, for example, every other tick being labelled.
|
109 |
This can result in, for example, every other tick being labelled.
|
| 110 |
(The ticks are drawn left to right or bottom to top, and space at
|
110 |
(The ticks are drawn left to right or bottom to top, and space at
|
| Line 127... |
Line 127... |
| 127 |
}
|
127 |
}
|
| 128 |
\seealso{
|
128 |
\seealso{
|
| 129 |
\code{\link{Axis}} for a generic interface.
|
129 |
\code{\link{Axis}} for a generic interface.
|
| 130 |
|
130 |
|
| 131 |
\code{\link{axTicks}} returns the axis tick locations
|
131 |
\code{\link{axTicks}} returns the axis tick locations
|
| 132 |
corresponding to \code{at=NULL}; \code{\link{pretty}} is more flexible
|
132 |
corresponding to \code{at = NULL}; \code{\link{pretty}} is more flexible
|
| 133 |
for computing pretty tick coordinates and does \emph{not} depend on
|
133 |
for computing pretty tick coordinates and does \emph{not} depend on
|
| 134 |
(nor adapt to) the coordinate system in use.
|
134 |
(nor adapt to) the coordinate system in use.
|
| 135 |
|
135 |
|
| 136 |
Several graphics parameters affecting the appearance are documented
|
136 |
Several graphics parameters affecting the appearance are documented
|
| 137 |
in \code{\link{par}}.
|
137 |
in \code{\link{par}}.
|
| Line 150... |
Line 150... |
| 150 |
|
150 |
|
| 151 |
plot(1:7, rnorm(7), main = "axis() examples",
|
151 |
plot(1:7, rnorm(7), main = "axis() examples",
|
| 152 |
type = "s", xaxt = "n", frame = FALSE, col = "red")
|
152 |
type = "s", xaxt = "n", frame = FALSE, col = "red")
|
| 153 |
axis(1, 1:7, LETTERS[1:7], col.axis = "blue")
|
153 |
axis(1, 1:7, LETTERS[1:7], col.axis = "blue")
|
| 154 |
# unusual options:
|
154 |
# unusual options:
|
| 155 |
axis(4, col = "violet", col.axis="dark violet", lwd = 2)
|
155 |
axis(4, col = "violet", col.axis = "dark violet", lwd = 2)
|
| 156 |
axis(3, col = "gold", lty = 2, lwd = 0.5)
|
156 |
axis(3, col = "gold", lty = 2, lwd = 0.5)
|
| 157 |
|
157 |
|
| 158 |
# one way to have a custom x axis
|
158 |
# one way to have a custom x axis
|
| 159 |
plot(1:10, xaxt = "n")
|
159 |
plot(1:10, xaxt = "n")
|
| 160 |
axis(1, xaxp=c(2, 9, 7))
|
160 |
axis(1, xaxp = c(2, 9, 7))
|
| 161 |
}
|
161 |
}
|
| 162 |
\keyword{aplot}
|
162 |
\keyword{aplot}
|
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