| .TH IM_GREY 3 "10 May 1991" |
| .SH NAME |
| im_grey, im_fgrey, im_make_xy \- creates a grey scale |
| .SH SYNOPSIS |
| .B #include <vips/vips.h> |
| |
| .B int im_grey( image, xsize, ysize ) |
| .br |
| .B IMAGE *image; |
| .br |
| .B int xsize, ysize; |
| |
| .B int im_fgrey( image, xsize, ysize ) |
| .br |
| .B IMAGE *image; |
| .br |
| .B int xsize, ysize; |
| |
| .B int im_make_xy( image, xsize, ysize ) |
| .br |
| .B IMAGE *image; |
| .br |
| .B int xsize, ysize; |
| |
| .SH DESCRIPTION |
| .B im_grey(3) |
| creates a one-band FMTUCHAR grey scale image of sizes xsize by |
| ysize. The intensity varies from 0 (left) to 255 (right). |
| |
| .B im_fgrey(3) |
| works as |
| .B im_grey(3), |
| except that the output image is FMTFLOAT, |
| allowing pixel values from 0 (left) to 1.0 (right). |
| |
| .B im_make_xy(3) |
| makes a two-band FMTUINT image where each pixel in band 0 has a value equal to |
| the x coordinate, and each pixel in band 1 has a value equal to the y |
| coordinate. |
| |
| .SH RETURN VALUE |
| The function returns 0 on success and -1 on error. |
| .SH SEE ALSO |
| im_black(3) |
| .SH COPYRIGHT |
| Birkbeck College and the National Gallery, 1995 |
