🚀 go-pugleaf

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.   
>
>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).
>

I don't know about the color, but we have had considerable trouble
with SAS PostScript run through Preview crashing the windowserver.
Not much fun.  This is the only commercially generated PostScript
we have had this problem with.  I won't mention how I feel about SAS.

Steve

-- 
 #====#====#====#====#====#====#====#====#====#====#====#====#====#====#
 #  Steven M. Boker            #          "Two's bifurcation           #
 #  boker@virginia.edu         #           but three's chaotic"        #
 #====#====#====#====#====#====#====#====#====#====#====#====#====#====#

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).
> 

Poor PostScript is probably your problem. If Preview doesn't see the proper
header and page information in the document it will not display it in color.
I usually add the following to a trashy PS document to get Preview to display
it properly.

Add/change the following at the top of the doc.

%!PS-Adobe-2.0
%%EndComments
%%BeginProlog

Put the following just before the first page begins.

%%EndProlog
%%Page: 1 1

Put the following before the rest of the pages (usually after showpage's)
where x is the proper page number.

%%Page: x x

That is usually enough to make Preview happy.

Note that depending on the consistency of the output, you can probably
automate these steps in a shell script (I've got one for PATRAN on the Cray).

Hope that helps.

Dave

--
David K. Hess
Graduate Assistant                     David-Hess@tamu.edu
Supercomputer Center                  Texas A&M University

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