.TH SHRINK 3 "2 May 1991"
.SH NAME
im_shrink \-  shrink an image
.SH SYNOPSIS
#include <vips/vips.h>

int im_shrink(in, out, xfactor, yfactor)
.br
IMAGE *in, *out;
.br
double xfactor, yfactor;

int im_resize_linear(in, out, X, Y)
.br
IMAGE *in, *out;
.br
int X, Y;

.SH DESCRIPTION

.B im_shrink(3)
shrink the input image file by 
.B xfactor 
along the horizontal and
.B yfactor 
along the vertical direction.  The function does not perform subpixel
interpolation and therefore the resultant image can present aliasing especially
for small x and y factors. Any size image, any non-complex type, any number of
bands.

.B im_resize_linear(3)
resizes the image to be
.B X
by
.B Y
pixels. It is slow, only does bilinear interpolation (and so will be
inaccurate for factors greater than two), and uses WIO, so it has a 2GB image
size limit and will use large amounts of memory. Use 
.B im_shrink(3)
in preference if possible.

.SH RETURN VALUE
The functions returns 0 on success and -1 on error.
.SH SEE ALSO
im_affine(3)