| Re: postscript resolution [message #35569] |
Tue, 08 July 2003 06:41 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Klaus Scipal writes:
> By the way I am always surprised how David exactly knows what one is doing
> wrong from the bit of information normally posted here
Well, personal experience, mostly. :-)
Cheers,
David
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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| Re: postscript resolution [message #35573 is a reply to message #35569] |
Tue, 08 July 2003 01:16  |
Klaus Scipal
Messages: 45
Registered: November 1997
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Member |
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Dear David & Reimar
Fool me, actually I did everything right, using Davids fsc_psconfig tool to
configuer the ps device, plotting everything to the ps file... But as David
said the output resolution is only as good as the output device supports.
Thanks for the answer, you helped me a lot.
By the way I am always surprised how David exactly knows what one is doing
wrong from the bit of information normally posted here and giving answers
were even I have the feeling that everything is so simple.
Klaus
"David Fanning" <david@dfanning.com> wrote in message
news:MPG.1973451aec7687619896a0@news.frii.com...
> Klaus Scipal writes:
>
>> I have to produce some graphics in postscript format with at least 300
dpi.
>> Producing the postscript files was fairly easy, however they only have
72
>> dpi. Can anyone give me a hint how to change the resoltuion to 300 dpi?
>
> That fact that producing the PostScript files was "fairly easy"
> and the fact that you only have 72 dpi suggests you probably
> took a "screen dump" of your graphics and sent that to the
> PostScript file. While "fairly easy", this technique is
> sure to disappoint, since the display screen is never
> much more than 72 dpi.
>
> If you issued normal IDL graphics commands to produce
> your PostScript file, then I suspect the output resolution
> will be as good as your output device supports. :-)
>
> Cheers,
>
> David
>
> --
> David W. Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Phone: 970-221-0438, E-mail: david@dfanning.com
> Coyote's Guide to IDL Programming: http://www.dfanning.com/
> Toll-Free IDL Book Orders: 1-888-461-0155
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| Re: postscript resolution [message #35593 is a reply to message #35573] |
Mon, 07 July 2003 08:52 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Klaus Scipal writes:
> I have to produce some graphics in postscript format with at least 300 dpi.
> Producing the postscript files was fairly easy, however they only have 72
> dpi. Can anyone give me a hint how to change the resoltuion to 300 dpi?
That fact that producing the PostScript files was "fairly easy"
and the fact that you only have 72 dpi suggests you probably
took a "screen dump" of your graphics and sent that to the
PostScript file. While "fairly easy", this technique is
sure to disappoint, since the display screen is never
much more than 72 dpi.
If you issued normal IDL graphics commands to produce
your PostScript file, then I suspect the output resolution
will be as good as your output device supports. :-)
Cheers,
David
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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| Re: postscript resolution [message #35594 is a reply to message #35593] |
Mon, 07 July 2003 08:39 |
R.Bauer
Messages: 1424
Registered: November 1998
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Senior Member |
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Klaus Scipal wrote:
> Hi
>
> I have to produce some graphics in postscript format with at least 300 dpi.
> Producing the postscript files was fairly easy, however they only have 72
> dpi. Can anyone give me a hint how to change the resoltuion to 300 dpi?
>
> Klaus
>
>
Dear Klaus,
how did you measure this?
and how did you have produced this 72dpi file. Did you have used direct
graphics or object graphics?
Which version of idl did you use?
set_plot,'ps'
plot,findgen(10)
device,/close
set_plot,'X'
This gives a postscript file by directgraphics. It would be printed fine
on a 300dpi printer as well on a 1200dpi printer.
Normally Postscript is a vector driven format, so the printer knows how
to print it in differnt dpi's.
regards
Reimar
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