Click on plotly plot to highlight traces

Adds click functionality to a plotly plot to highlight traces when clicked.

Usage

click_plot(p, highlight_color = "#1f77b4")

Arguments

p

The plotly plot to which the click functionality should be added. Default is the plotly::last_plot().

highlight_color

The color to use for traces that are highlighted. Colors for non-highlighted traces will be preserved but dimmed to 20% opacity. Default highlight color is orange().

Details

This function modifies a plotly plot to allow clicking on traces to highlight them. Clicking on a trace will highlight it in orange (default) and dim all other traces. Clicking on the same trace again will deselect it and restore the original colors. Clicking on the background will also restore all traces to their original colors. The function uses the htmlwidgets::onRender function from the htmlwidgets package to add JavaScript code that handles the click events on the plotly plot.

Author

Michael Neely