From 8c83b1b0a06a3e51090f54c5a30fc6328a39a9f6 Mon Sep 17 00:00:00 2001
From: "Mirar (Pontus Hagland)" <pike@sort.mirar.org>
Date: Tue, 13 Jan 1998 02:35:28 +0100
Subject: [PATCH] doc update
Rev: src/modules/Image/encodings/pnm.c:1.9
---
src/modules/Image/encodings/pnm.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/src/modules/Image/encodings/pnm.c b/src/modules/Image/encodings/pnm.c
index 4203531cda..59114f2c4e 100644
--- a/src/modules/Image/encodings/pnm.c
+++ b/src/modules/Image/encodings/pnm.c
@@ -1,9 +1,9 @@
-/* $Id: pnm.c,v 1.8 1998/01/13 01:32:20 mirar Exp $ */
+/* $Id: pnm.c,v 1.9 1998/01/13 01:35:28 mirar Exp $ */
/*
**! module Image
**! note
-**! $Id: pnm.c,v 1.8 1998/01/13 01:32:20 mirar Exp $
+**! $Id: pnm.c,v 1.9 1998/01/13 01:35:28 mirar Exp $
**! submodule PNM
**!
**! This submodule keeps the PNM encode/decode capabilities
@@ -49,7 +49,7 @@
#include "stralloc.h"
#include "global.h"
-RCSID("$Id: pnm.c,v 1.8 1998/01/13 01:32:20 mirar Exp $");
+RCSID("$Id: pnm.c,v 1.9 1998/01/13 01:35:28 mirar Exp $");
#include "pike_macros.h"
#include "object.h"
#include "constants.h"
@@ -244,6 +244,14 @@ void img_pnm_decode(INT32 args)
**! uses the most optimized encoding for this image (bitmap, grey
**! or truecolor) - P4, P5 or P6 respective P1, P2 or P3.
**!
+**! P1/P4 assumes the image is black and white. Use
+**! <ref>Image.image->threshold</ref>() or something like
+**! <tt><ref>Image.colortable</ref>( ({({0,0,0}),({255,255,255})}) )->floyd_steinberg()->map(my_image)</ref></tt>
+**! to get a black and white image.
+**!
+**! P2/P5 assumes the image is greyscale. Use
+**! <ref>Image.image->grey</ref>() to get a greyscale image.
+**!
**! see also: decode
**!
**! returns the encoded image as a string
--
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