zoomInPlot: Display a plot with a rectangular section expanded in an...

In plotrix: Various Plotting Functions

Display a plot with a rectangular section expanded in an adjacent plot

Description

Display one plot on the left half of a device and an expanded section of that plot on the right half of the device with connecting lines showing the expansion.

Usage

 zoomInPlot(x,y=NULL,xlim=NULL,ylim=NULL,rxlim=xlim,rylim=ylim,xend=NA,
  zoomtitle=NULL,titlepos=NA,...)

Arguments

x,y	numeric data vectors. If ‘⁠y⁠’ is not specified, it is set equal to ‘⁠x⁠’ and ‘⁠x⁠’ is set to ‘⁠1:length(y)⁠’.
xlim,ylim	Limits for the initial plot.
rxlim,rylim	Limits for the expanded plot. These must be within the above.
xend	Where to end the segments that indicate the expansion. Defaults to just left of the tick labels on the left ordinate.
zoomtitle	The title of the plot, display in the top center.
titlepos	The horizontal position of the title in user units of the zoomed plot.
...	additional arguments passed to ‘⁠plot⁠’.

Details

‘⁠zoomInPlot⁠’ sets up a two column layout in the current device and calls ‘⁠plot⁠’ to display a plot in the left column. It then draws a rectangle corresponding to the ‘⁠rxlim⁠’ and ‘⁠rylim⁠’ arguments and displays a second plot of that rectangle in the right column. It is currently very simple and will probably become more flexible in future versions.

It just has. If ‘⁠rxlim⁠’ is set to NA, ‘⁠locator⁠’ will be called and the user can define the zoomed rectangle by clicking on each corner. This is a shameless ripoff of a suggestion by Greg Snow on the help list. Thanks, Greg.

Value

nil

Author(s)

Jim Lemon

See Also

plot

Examples

 zoomInPlot(rnorm(100),rnorm(100),rxlim=c(-1,1),rylim=c(-1,1),
  zoomtitle="Zoom In Plot",titlepos=-1.5)

plotrix documentation built on Nov. 10, 2023, 5:07 p.m.