xrep,yrep
Direction and number of pixels to be replicated
Description
The routine gSetPixelReplication() specifies the replication area for a subsequent pixel array. The values xrep, yrep represent the dimensions of a rectangular area into which any pixel output from the routine gDrawPixelArea() is replicated (or clipped) so that the area is completely filled.
Either or both of the dimensions may be negative, in which case the output and replication is done in the negative direction from the pixel area origin for that dimension.
If eitherxrep or yrep is zero then replication will be switched off.