There are already methods for Raster*
in the raster package.
Adding methods for list
, SpatialPolygons
, SpatialLines
,
and SpatialPoints
, gg
, histogram
, igraph
.
These latter classes return 1
.
numLayers(x)# S4 method for list
numLayers(x)
# S4 method for .spadesPlot
numLayers(x)
# S4 method for Raster
numLayers(x)
# S4 method for Spatial
numLayers(x)
# S4 method for ANY
numLayers(x)
A .spadesPlotObjects
object or list of these.
The number of layers in the object.