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% File src/library/graphics/man/plotdefault.Rd
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% File src/library/graphics/man/plotdefault.Rd
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% Part of the R package, https://www.R-project.org
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% Part of the R package, https://www.R-project.org
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% Copyright 1995-2018 R Core Team
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% Copyright 1995-2025 R Core Team
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% Distributed under GPL 2 or later
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% Distributed under GPL 2 or later
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\name{plot.default}
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\name{plot.default}
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\alias{plot.default}
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\alias{plot.default}
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\alias{plot}
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\alias{plot}
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Draw a scatter plot with decorations such as axes and titles
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Draw a scatter plot with decorations such as axes and titles
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in the active graphics window.
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in the active graphics window.
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}
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}
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\usage{
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\usage{
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\method{plot}{default}(x, y = NULL, type = "p", xlim = NULL, ylim = NULL,
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\method{plot}{default}(x, y = NULL, type = "p", xlim = NULL, ylim = NULL,
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log = "", main = NULL, sub = NULL, xlab = NULL, ylab = NULL,
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log = "", lim2 = FALSE, main = NULL, sub = NULL, xlab = NULL, ylab = NULL,
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ann = par("ann"), axes = TRUE, frame.plot = axes,
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ann = par("ann"), axes = TRUE, frame.plot = axes,
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panel.first = NULL, panel.last = NULL, asp = NA,
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panel.first = NULL, panel.last = NULL, asp = NA,
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xgap.axis = NA, ygap.axis = NA,
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xgap.axis = NA, ygap.axis = NA,
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\dots)
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\dots)
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}
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}
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\item{xlim}{the x limits (x1, x2) of the plot. Note that \code{x1 > x2}
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\item{xlim}{the x limits (x1, x2) of the plot. Note that \code{x1 > x2}
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is allowed and leads to a \sQuote{reversed axis}.
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is allowed and leads to a \sQuote{reversed axis}.
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The default value, \code{NULL}, indicates that the range of the
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The default value, \code{NULL}, indicates that the range of the
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\link{finite} values to be plotted should be used.}
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\link{finite} values to be plotted should be used.}
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\item{ylim}{the y limits of the plot.}
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\item{ylim}{the y limits of the plot; see \code{xlim} for default and details.}
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\item{log}{a character string which contains \code{"x"} if the x axis
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\item{log}{a character string which contains \code{"x"} if the x axis
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is to be logarithmic, \code{"y"} if the y axis is to be logarithmic
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is to be logarithmic, \code{"y"} if the y axis is to be logarithmic
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and \code{"xy"} or \code{"yx"} if both axes are to be logarithmic.}
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and \code{"xy"} or \code{"yx"} if both axes are to be logarithmic.}
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\item{lim2}{logical, relevant only when at least one of \code{xlim} or
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\code{ylim} are \code{NULL} and hence corresponding axis limits are
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computed from \code{\link{range}(<x/y-coord>[<finite-coord>])}.
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When true, \emph{both} x- and y-values need to be finite to be used in
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the \code{range(.)} computation.}
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\item{main}{a main title for the plot, see also \code{\link{title}}.}
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\item{main}{a main title for the plot, see also \code{\link{title}}.}
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\item{sub}{a subtitle for the plot.}
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\item{sub}{a subtitle for the plot.}
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\item{xlab}{a label for the x axis, defaults to a description of \code{x}.}
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\item{xlab}{a label for the x axis, defaults to a description of \code{x}.}
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\item{ylab}{a label for the y axis, defaults to a description of \code{y}.}
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\item{ylab}{a label for the y axis, defaults to a description of \code{y}.}
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mtext("lines(*, type = \"s\", ...)", col = "red", cex = 0.8)
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mtext("lines(*, type = \"s\", ...)", col = "red", cex = 0.8)
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}
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}
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}
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}
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par(op)
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par(op)
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## Log Plots -- default xlim / ylim from range(<finite>)
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set.seed(2); noise <- rnorm(100)/100; xe <- sort(rexp(100, 8))
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x <- sort(xe + noise); y <- exp(-x^2 + (x < 0)*10)*sin(pi*x)
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str(data.frame(x,y))
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plot(y ~ x) # (2 outliers, x < 0)
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plot(y ~ x, log="x") # --> Warning: 2 x values <= 0 omitted from log..plot
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# still same y-axis limits [~ -570, 0 ]
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plot(y ~ x, log="x", lim2 = TRUE) # still Warning, but
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# nice - reasonable y-axis [0, 0.8]
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##--- Log-Log Plot with custom axes
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##--- Log-Log Plot with custom axes
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lx <- seq(1, 5, length.out = 41)
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lx <- seq(1, 5, length.out = 41)
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yl <- expression(e^{-frac(1,2) * {log[10](x)}^2})
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yl <- expression(e^{-frac(1,2) * {log[10](x)}^2})
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y <- exp(-.5*lx^2)
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y <- exp(-.5*lx^2)
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op <- par(mfrow = c(2,1), mar = par("mar")-c(1,0,2,0), mgp = c(2, .7, 0))
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op <- par(mfrow = c(2,1), mar = par("mar")-c(1,0,2,0), mgp = c(2, .7, 0))
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