NAME: WARP_SHIFT PURPOSE: Use RST with bilinear interpolation to shift band to sub-pixel accuracy AUTHOR Mort Canty (2004) Juelich Research Center m.canty@fz-juelich.de CALLING SEQUENCE: sband = Warp_Shift(band,shft) ARGUMENTS: band: the image band to be shifted shft: array of length 2 giving the amount to be shifted KEYWORDS: None DEPENDENCIES: ENVI