Get or set the number of rows, columns, and layers of a Raster* object. You cannot use this function to set the dimensions of a RasterStack object.
When setting the dimensions, you can provide a row number, or a vector with the row and the column number (for a RasterLayer and a RasterBrick), or a row and column number and the number of layers (only for a RasterBrick)
## S4 method for signature 'BasicRaster' dim(x)
Integer or Raster* object
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