Capture a raster image

Description

Capture the current contents of a graphics device as a raster (bitmap) image.

Usage

grid.cap()

Details

This function is only implemented for on-screen graphics devices.

Value

A matrix of R colour names.

Author(s)

Paul Murrell

See Also

grid.raster

dev.capabilities to see if it is supported.

Examples

## Not run: 
dev.new(width=.5, height=.5)
grid.rect()
grid.text("hi")
cap <- grid.cap()
dev.off()

grid.raster(cap, width=.5, height=.5, interpolate=FALSE)

## End(Not run)