1Pamseq User Manual(0) Pamseq User Manual(0)
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6 pamseq - generate PAM image of all possible tuple values, in sequence
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10 pamseq [-tupletype=tupletype] depth maxval
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12 All options can be abbreviated to their shortest unique prefix. You
13 may use two hyphens instead of one to designate an option. You may use
14 either white space or an equals sign between an option name and its
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19 This program is part of Netpbm(1).
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21 pamseq generates a PAM image of a specified depth and specified maxval
22 that consists of a single row. The row consists of one tuple of every
23 possible value, in order.
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25 For a depth of one, the order is simple: From 0 to maxval, going from
26 left to right. For higher depths, the highest numbered plane goes from
27 0 to maxval (going left to right) while all the other planes have value
28 0. Then the sequence repeats except with the next highest plane set to
29 a value of 1, then 2, etc.
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33 In addition to the options common to all programs based on libnetpbm
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35 Common Options ⟨index.html#commonoptions⟩ ), pamseq recognizes the
36 following command line option:
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40 -tupletype
41 This is the value of the "tuple_type" attribute of the created
42 PAM image. It can be any string up to 255 characters.
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47 To create a simple ramp of the values 0..255, for input to various
48 matrix calculations, try
49 pamseq 1 255
50 (Before pamseq existed, pgmramp was often pressed into service for
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53 To create a PPM color map of all the possible colors representable with
54 a maxval of 5, do
55 pamseq 3 5 -tupletype=RGB | pamtopnm
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57 Again, with a modern program based on the Netpbm library, you don't
58 need the pamtopnm because a PAM RGB image is equivalent to a PPM image.
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60 You can use such a color map with pnmremap(1) to quantize the colors in
61 an image. With the maxval of 5 given in the example, you get a color
62 map of the set of "web safe" colors as defined by Netscape. Most web
63 browsers guarantee that they can produce at least these 216 colors (215
64 plus black).
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68 pnmremap(1), pamtopnm(1), pam(1)
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72 pamseq was added to Netpbm in June 2002.
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75 This manual page was generated by the Netpbm tool 'makeman' from HTML
76 source. The master documentation is at
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78 http://netpbm.sourceforge.net/doc/pamseq.html
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80netpbm documentation 08 May 2002 Pamseq User Manual(0)