Outputs the resulting scaled image. The [#scale_by] scales the image received by the row and column factors passed. A single value applies the scaling uniformly on the row and columns. The Grid on which the scale_to will be performed. The scaling factor (defaults to 2). if it's a single value, then that factor is to be used for both rows and columns. duplicates each pixel several times in width and several times in height, where the number of times is determined by the factor described above. twice those of the incoming grid. It is several times faster. grid((factor*y) (factor*x) channels)