roc@apollo.uucp (Richard Curtis) (09/16/87)
My version of dimpress (the thing that AT&T supplies with DWB 2.0 to convert
device independent troff output to imPRESS) does not
output a real inch of vertical space when troff asks for one.
When I run this file
.\"----- start ---
.de T
\l'0.5i'
..
.po 0
.nf
.wh 0i T
.wh 1i T
.wh 2i T
.wh 3i T
.wh 4i T
.wh 5i T
.wh 6i T
.wh 7i T
.wh 8i T
.wh 9i T
.wh 10i T
.wh 11i T
.\"----- end ---
through device independent troff, it should produce a series of horizontal
lines, one inch apart. The raw troff output actually includes the
right stuff; e.g. a series of vertical moves of exactly the number
of units in an inch, but when I postprocess through dimpress (at
either 240 or 300 dpi), I get output in which the lines are only .993
inches apart. This may not sound like much but over the length of a page,
it adds up to over 1/16" of an inch.
There is a similar quantum of error in horizontal measurements.
Running the same troff output through Adobe's
psdit postprocessor yields (utterly) correct spacing.
Any ideas what or where the problem is?
-r
Richard Curtis
Apollo Computer Inc.
330 Billerica Rd., Chelmsford, MA 01824
617-256-6600 x7852
{umix,mit-eddie,uw_beaver}!apollo!rocsanders@convex.UUCP (09/16/87)
If your using a cannon type engine they do not have 300/300 resolution. its really something like 298 by 296 or some such number plus or minus 5%.