1Pnmcomp User Manual(0) Pnmcomp User Manual(0)
2
3
4
6 pnmcomp - composite (overlay) two PNM images together
7
8
10 pnmcomp
11
12 [-align={left|center|right| beyondleft|beyondright}] [-valign={top|mid‐
13 dle|bottom| above|below}] [-xoff=X] [-yoff=Y] [-alpha=alpha-pgmfile]
14 [-invert] [-opacity=opacity] overlay_file [underlying_file [out‐
15 put_file]]
16
17 Minimum unique abbreviation of option is acceptable. You may use dou‐
18 ble hyphens instead of single hyphen to denote options. You may use
19 white space in place of the equals sign to separate an option name from
20 its value.
21
22
23
25 This program is part of Netpbm(1).
26
27 pnmcomp was obsoleted by pamcomp(1),introducedwithNetpbm10.21 (March
28 2004). pamcomp is backward compatible with pnmcomp, plus adds many
29 additional functions, including the ability to process PAM images, and
30 tends to produce better transparency results.
31
32 pnmcomp remains in the Netpbm package because it may have fewer bugs
33 for now than pamcomp, and is in some environments faster (but newer
34 compilers have been seen to produce code for pamcomp significantly
35 faster than that for pnmcomp). Some day, pnmcomp will probably become
36 an alias for pamcomp.
37
38 You can use the pamcomp documentation for pnmcomp, considering the fol‐
39 lowing differences:
40
41
42
43 · pnmcomp options are a subset of pamcomp's, as
44 documented above.
45
46 · pnmcomp always assumes the input is linear, as pamcomp
47 does when you specify its -linear option.
48
49 · pnmcomp cannot process PAM images.
50
51
52
53netpbm documentation 15 February 2004 Pnmcomp User Manual(0)