[gs-bugs] [Bug 689668] Documentation on banding is unclear.

bugs.ghostscript.com-bugzilla-daemon at ghostscript.com bugs.ghostscript.com-bugzilla-daemon at ghostscript.com
Sun Apr 27 23:30:15 PDT 2008


leonardo at artifex.com changed:

           What    |Removed                     |Added
           Priority|P4                          |P2

------- Additional Comments From leonardo at artifex.com  2008-04-27 23:30 -------
Repeating the bug description with fixed misprints :

End users want to know about Ghostscript banding methods from Use.htm . However 
this file contains only a misleading information about MaxBitmap. Some 
documentation on banding parameters appears in Language.htm, but (1) end users 
can't understand this document because it is for Postscript programmers, (2) 
it's unclear how these parameters control the algorithm (3) from parameter 
names they look contradicting one another. For example, what happens if I set 
BandWidth=10, MaxBitmap=10000000 : will it cause vertical bands ???

Also need to explain that default settings are optimal for for 600 dpi A4, and 
they may be very inoptimal for big pages such as bug 689155 or bBug 689534. 
Therefore big pages either need an improvement for the default setting code, or 
a manual adjustment for parameters.

Bumping the priority because mentioned customer bugs depend on it. Also I think 
Use.htm needs a new chapter "Parameters for rasterising big PDF pages".

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