R: Draw a Diagram of a Grid Layout

grid.show.layout {grid}

R Documentation

Draw a Diagram of a Grid Layout

Description

This function uses Grid graphics to draw a diagram of a Grid layout.

Usage

grid.show.layout(l, newpage=TRUE,
             cell.border = "blue", cell.fill = "light blue",
             cell.label = TRUE, vp = NULL)

Arguments

`l`	A Grid layout object.
`newpage`	A logical value indicating whether to move on to a new page before drawing the diagram.
`cell.border`	The colour used to draw the borders of the cells in the layout.
`cell.fill`	The colour used to fill the cells in the layout.
`cell.label`	A logical indicating whether the layout cells should be labelled.
`vp`	A Grid viewport object (or NULL).

Details

A viewport is created within vp to provide a margin for annotation, and the layout is drawn within that new viewport. The margin is filled with light grey, the new viewport is filled with white and framed with a black border, and the layout regions are filled with light blue and framed with a blue border. The diagram is annotated with the widths and heights (including units) of the columns and rows of the layout using red text.

Value

None.

Author(s)

Paul Murrell

Examples

## Diagram of a simple layout 
grid.show.layout(grid.layout(4,2,
                     heights=unit(rep(1, 4),
                                  c("lines", "lines", "lines", "null")),
                     widths=unit(c(1, 1), "inches")))

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