1Pamfixtrunc User Manual(0)                          Pamfixtrunc User Manual(0)
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NAME

6       pamfixtrunc - replaced by pamfix
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DESCRIPTION

10       This program is part of Netpbm(1).
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12       pamfixtrunc was replaced in Netpbm 10.66 (March 2014) by pamfix(1).
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14       pamfix  with  a -truncate option is the same thing as pamfixtrunc.  But
15       pamfix has other options to repair other kinds of corruption.
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17       Another change that came with Netpbm 10.66 is that  an  invalid  sample
18       value  (a  value  greater  than  the  maxval  the image declares in its
19       header) is considered by the common Netpbm image reading  facility  (in
20       libnetpbm)  to be unreadable, which means the file is essentially trun‐
21       cated.  In older Netpbm, the invalid sample  value  propagates  to  the
22       output  in a program such as pamfixtrunc.  Thus, in older Netpbm a file
23       with 100 rows and an invalid sample value in the  3rd  row  would  pass
24       through  pamfixtrunc  unchanged.  But in Netpbm 10.66, pamfix -truncate
25       with the same input would produce an output image  with  only  2  rows.
26       While  it  is  not  possible  in  10.66  to cause pamfix to generate an
27       invalid Netpbm image, you can use -clip and  -changemaxval  options  to
28       avoid truncating the file in a case like this.
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30       You  should  not  make  any new use of pamfixtrunc and if you modify an
31       existing use, you should upgrade to pamfixtrunc.  But note that if  you
32       write  a  program that might have to be used with very old Netpbm, pam‐
33       fixtrunc is the only way to do that.
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DOCUMENT SOURCE

36       This manual page was generated by the Netpbm tool 'makeman'  from  HTML
37       source.  The master documentation is at
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39              http://netpbm.sourceforge.net/doc/pamfixtrunc.html
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41netpbm documentation                                Pamfixtrunc User Manual(0)
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