Display a plot with a rectangular section expanded in an adjacent plot
zoomInPlot.RdDisplay 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.
