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Objects of class Extent are used to define the spatial extent (extremes) of objects of the BasicRaster and Raster* classes.
You can use the extent function to create Extent objects, or to extract them from Raster* and Spatial* objects.
extent
xmin
minimum x coordinate
xmax
maximum x coordinate
ymin
minumum y coordinate
ymax
maximum y coordinate
display values of a Extent object
extent, setExtent
setExtent
# NOT RUN { ext <- extent(-180,180,-90,90) ext # }
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