overlayBounds {overshiny} | R Documentation |
Align overlays with a ggplot2 or base plot
Description
Sets the pixel and coordinate bounds of the overlay area based on a
ggplot2::ggplot()
object or base R plot. This ensures that overlays are
positioned correctly in both visual and coordinate space.
Usage
overlayBounds(ov, plot, xlim = c(NA, NA), ylim = c(NA, NA), row = 1L, col = 1L)
Arguments
ov |
A |
plot |
A |
xlim , ylim |
Vectors defining the coordinate limits for overlays.
Use |
row , col |
Row and column of the facet panel (if applicable). This only works with ggplot2 plots; base R plots with multiple panels are not supported. |
Details
Call this function within shiny::renderPlot()
, before returning the
ggplot object (if using ggplot2) or NULL
(if using base R plotting).
Value
The ggplot object (for ggplot2) or NULL
(for base R plotting), to
be returned from the shiny::renderPlot()
block.
See Also
overlayServer()
, for a complete example.
Examples
server <- function(input, output) {
ov <- overlayServer("my_plot", 1, 1)
output$my_plot <- shiny::renderPlot({
plot(1:100, sin(1:100 * 0.1), type = "l")
overlayBounds(ov, "base", xlim = c(1, 100))
})
# further server code here . . .
}