home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!sun-barr!olivea!hal.com!decwrl!rosie!italian.next.com
- From: jpasqua@italian.next.com (Joe Pasqua)
- Newsgroups: comp.sys.next.programmer
- Subject: Re: strange color PS problem....
- Message-ID: <4945@rosie.NeXT.COM>
- Date: 9 Sep 92 15:59:12 GMT
- References: <6602@vtserf.cc.vt.edu>
- Sender: news@NeXT.COM
- Lines: 36
-
- In article <6602@vtserf.cc.vt.edu> gbol@rglnext.geol.vt.edu (Gregory Lampshire)
- writes:
-
- > I am attempting to view SAS generated color PS on a NeXTdimensions.
- > Here's what happens:
- >
- > If I use YAP the image is in color.
- > If I use Preview the image is in B&W but dithered for color (ie the
- > colored lines look like greyscale--they look bad).
- > If I use Mme2.0 and preview a color plot, the previewer uses color.
- >
- > The SAS PS file is pretty trashy, no comments anywhere. Anybody have a
- > clue as to why my SAS PS file only is in color in Yap and not in Preview?
- > Is it just very poor PS on SAS's part? (the SAS color ps file is using the
- > setrgbcolor command. I can see them in the file).
-
-
- If your SAS generated PostScript file does not contain at least minimal
- Document Structuring Convention (DSC) comments, then Preview can't do much more
- than effectively treat it as a print job. That's why it tells you that you can
- only page through the document sequentially. When this is the case, you'll only
- see grayscale output - no color.
-
- Mma2.0 is producing correctly commented PostScript output - that's why the
- Previewer shows it in color.
-
- YAP ignores comments and shoves the PostScript code down to the window server
- as is, so you get color. This means that if you have a multipage PostScript
- file, the output of all the pages will show up overlaid on top of one another.
-
- Note also that some of the TranScript utilities won't work on PostScript
- documents that don't conform to the DSC. For instance, you can't page reverse
- such a file or print selected pages out of the middle.
-
- Hope this helps explain things,
- joe
-