Zoom and Scroll — zoom_plot • rationalmatrices

The utility zoom_plot creates and runs a "shiny app" which displays two plots: Drawing (and dragging) a "brush" in the "control" plot at the bottom zooms into zooms into the selected x-range of the plot at the top.

Usage

zoom_plot(p, p0 = p, title = NULL, ...)

Arguments

p, p0: two function ("closure") objects which produce an R plot when calling p(), p(xlim) and p0() respectively. Both plots should use the same range of "x-values".
title: (character) optimal title for the "shiny app window"
...: not used.

Value

This function normally does not return; interrupt R to stop the application (usually by pressing Ctrl+C or Esc).

Details

This utility is based on the shiny package.

Examples

if (FALSE) {
make_plot_fun = function(x, y, type, col) {
   fun = function(xlim = NULL) {
   plot(x, y, xlim= xlim, type = type, col = col)
   }
   return(fun)
}

p = make_plot_fun(1:10, rnorm(10), type = 'p', col = 'red')
p0 = make_plot_fun(1:10, sin(1:10), type = 'l', col = 'black')
zoom_plot(p, p0, title = 'test "zoom_plot"')
}