rearrange data in SpatialPointsDataFrame or SpatialGridDataFrame for plotting with spplot (levelplot/xyplot wrapper)

rearrange SpatialPointsDataFrame for plotting with spplot or levelplot

Usage

flipHorizontal(x)
flipVertical(x)

Arguments

x

object of class SpatialGridDataFrame

Value

object of class SpatialGridDataFrame, with pixels flipped horizontally or vertically. Note that the spatial structure is destroyed (or at least: drastically changed).

Author

Michael Sumner

Examples

data(meuse.grid) # data frame
gridded(meuse.grid) = c("x", "y") # promotes to 
fullgrid(meuse.grid) = TRUE
d = meuse.grid["dist"]
image(d, axes=TRUE)

image(flipHorizontal(d), axes=TRUE)

image(flipVertical(d), axes=TRUE)