iraf.net

>From root@ctios1 Tue Jan 26 06:58:22 1993
From: root@ctios1.ctio.noao.edu (jim hughes x236)
To: dtody, mfitzpatrick, pgigoux, sheathcote
Subject: image dumps on SPARCprintersMike, as regards the lines appearing on sparcprinters -- > The problem is caused by the NewsPrint software not fully understanding
>Adobe PostScript and is not a problem with IRAF. Upgrading to NewsPrint 2.0
^^^^^^^^^^^^^
we are running NP2.0 version C, which is, i believe, the newest. we called
SUN about this and they mailed us C claiming it would solve the problem...>helps the problem somewhat (it makes the streaks in image hardcopies less
>noticeable but fixes graphcopy completely). Using the Sun Pageview task will
>also show the streaks since this task uses the same PS engine, there's no
>real workaround for it.
^^^^^^^^^^
not true. what i discovered is that if you select the output file type to
raster, and setenv R_DISPOSE "rasfilter8to1 | lpr -PSPARCprinter -s %s"(for example), the image comes out perfect, WITHOUT the lines. this is the
technique we will use here at CTIO until a better fix comes along. the downside
is that this technique isn't supported in SAOimage (or is it?), clearly, the
hack required to SAOimage will be relatively trivial, since it already supports
the R_DISPOSE environment variable.you may want to propagate this work around to your customers...cheers,
jim hughesCerro Tololo Interamerican Observatories
La Serena, Chile
jhughes@noao.edu
>From fitz Tue Jan 26 11:14:22 1993
To: jhughes@noao.edu
Subject: Re: image dumps on SPARCprintersHi Jim,
Thanks for your suggestion, this will certainly be passed out to IMTOOL
users. Unfortunately, SAOimage doesn't support raster file output. You're
right that the change is trivial but since we plan to start an Ximtool shortly
it's probably not worth changing at this point unless we hear more complaints
from users. If you make the change locally I'd appreciate a diff of the
source so we can integrate it here. Cheers,
-Mike