int im_zoom(in, out, xfac, yfac)
IMAGE *in, *out; int xfac, yfac;
DESCRIPTIONim_zoom() zooms (ie. nearest neighbour upsampling) the image held by the image descriptor in by factors xfac and yfac and writes the result to the image descriptor out. Works for any type of image, even LABPACK.
RETURN VALUEThe function returns 0 on success and -1 on error.
COPYRIGHTNational Gallery, 1994.