1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.3//EN">
<html><head><title>Pnmindex User Manual</title></head>
<body>
<h1>pnmindex</h1>
Updated: 23 November 2023
<br>
<a href="#index">Table Of Contents</a>
<h2>NAME</h2>
pnmindex - build a visual index of a bunch of PNM images
<h2 id="synopsis">SYNOPSIS</h2>
<b>pnmindex</b>
[<b>-size=</b><i>N</i>]
[<b>-across=</b><i>N</i>]
[<b>-black</b>]
[<b>-title=</b><i>title</i>]
[<b>-quant</b>|<b>-noquant</b>]
[<b>-colors=</b><i>N</i>]
<i>pnmfile</i> ...
<p>You can use the minimum unique abbreviation of the options. You can use
two hyphens instead of one. You can separate an option name from its value
with white space instead of an equals sign.
<h2 id="description">DESCRIPTION</h2>
<p>This program is part of <a href="index.html">Netpbm</a>.
<p><b>pnmindex</b> creates an index image containing thumbnail (small)
versions of a bunch of PNM files you supply (akin to a photographic
"contact sheet").
<p><b>pnmindex</b> labels each thumbnail and, optionally, contains a
title.
<p>If you just want to concatenate some images together in a grid, use
<b>pamundice</b> for that.
<p>If you want to take apart the image you generated with <b>pnmindex</b>,
use <b>pamdice</b> or <b>pamcut</b>.
<p>The program can generate large temporary files. By default, these go in
directory <b>/tmp</b>, but you can usse the <b>TMPDIR</b> environment variable
to have them somewhere else.
<h2 id="options">OPTIONS</h2>
<p>In addition to the options common to all programs based on libnetpbm
(most notably <b>-quiet</b>, see <a href="index.html#commonoptions">
Common Options</a>), <b>pnmindex</b> recognizes the following
command line options:
<dl compact>
<dt><b>-size=</b><i>N</i>
<dd>The size of each thumbnail. The image is scaled down to fit maximally
inside a <i>N</i> x <i>N</i> pixel box without changing its aspect ratio.
<p>If the input image is already smaller than this, its size remains the same
in the output.
<p>The value must be at least 1.
<p>The default is 100.
<dt><b>-across=</b><i>N</i>
<dd>This is the number of thumbnails in each row.
<p>The value must be at least 1.
<p>The default is 6.
<dt><b>-black</b>
<dd>This controls the color of the padding between the images; by default it
is white and the labels are black lettering on white background, but the
<b>-black</b> option reverses this.
<dt><b>-title=</b><i>title</i>
<dd>
This specifies a title to be placed at the top of the image.
<p>The <i>title</i> value must be in ASCII. Characters that are not valid
ASCII are not rendered.
<p>Default is no title.
<dt><b>-noquant</b>
<dd>Disables color quantization. By default, if any input image is PPM, the
program reduces the number of colors to the number of colors specified
by <b>-colors</b>).
<dt><b>-quant</b>
<dd>This option has no effect; it explicitly selects the default behavior of
quantizing colors. See <b>-noquant</b>.
<dt><b>-colors=</b><i>N</i>
<dd>The maximum number of colors allowed in the overall image. If it would
otherwise have more colors than these, <b>pnmindex</b> quantizes the result.
To reduce the effect of the colors in one thumbnail on the colors used for
another, the program quantizes colors to this number in each thumbnail
independently, then quantizes the colors in each row of thumbnails to this
number, then quantizes the colors in the entire output image to this number.
<p>This value is meaningless if you specify the <b>-noquant</b> option or if
no input image is PPM.
<p>The default is 256.
</dl>
<h2 id="history">HISTORY</h2>
<p>Before Netpbm 11.05 (December 2023), the Netpbm common option <b>-plain</b>
was not implemented.
<h2 id="seealso">SEE ALSO</h2>
<b><a href="pamscale.html">pamscale</a></b>,
<b><a href="pamcat.html">pamcat</a></b>,
<b><a href="pbmtext.html">pbmtext</a></b>,
<b><a href="pnmquant.html">pnmquant</a></b>,
<b><a href="pamcut.html">pamcut</a></b>,
<b><a href="pamdice.html">pamdice</a></b>,
<b><a href="pamundice.html">pamundice</a></b>,
<b><a href="pnmtile.html">pnmtile</a></b>,
<b><a href="pnm.html">pnm</a></b>
<h2 id="author">AUTHOR</h2>
<p>Copyright (C) 1991 by Jef Poskanzer.
<p><b>-title</b> and <b>-noquant</b> added 2000 by John Heidemann.
<hr>
<h2 id="index">Table Of Contents</h2>
<ul>
<li><a href="#synopsis">SYNOPSIS</a>
<li><a href="#description">DESCRIPTION</a>
<li><a href="#options">OPTIONS</a>
<li><a href="#history">HISTORY</a>
<li><a href="#seealso">SEE ALSO</a>
<li><a href="#author">AUTHOR</a>
</ul>
</body>
</html>
|
