| Re: color printing [message #4806] |
Thu, 10 August 1995 00:00 |
soc
Messages: 12
Registered: October 1994
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Junior Member |
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Andy Loughe (afl@cdc.noaa.gov) wrote:
: In article <3vt29e$5f1@alster.dkrz.de>, coelke@awi-bremerhaven.de (Christoph
: Oelke) writes:
: |> Hello,
: |> I'm looking for a way to produce post-script files of a high
: |> quality with IDL. So far I produced my window (tv,...)
: |> and saved the contents with tvrd(), displayed it in print
: |> mode with tv,<window-save> and thus produced a ps-file.
: |> But the quality of this method is not great.
: |>
: Here is an example...
: IDL> loadct, 40
: IDL> set_plot, 'ps'
: IDL> device, /color ! Check manual for numerous options
: IDL> contour,dist(20),c_colors=indgen(22)*12,nlevels=20,/cell_fil l,/xs,/ys
: IDL> device, /close
: IDL> set_plot, 'X'
: PRINT OR VIEW idl.ps
Just to add - one of the numerous options is the number of bits, and
for high quality you'll want to increase the default from 4 to 8 with
device,bits=8
Rob O'Connell
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| Re: color printing [message #4831 is a reply to message #4806] |
Mon, 07 August 1995 00:00  |
rep2857
Messages: 28
Registered: December 1994
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Junior Member |
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In article <4059va$2bn@post.gsfc.nasa.gov>,
Joel D. Offenberg <offenbrg@fondue.gsfc.nasa.gov> wrote:
> coelke@awi-bremerhaven.de (Christoph Oelke) writes:
A quick note on something I just had trouble with an hour ago relating
to set_plot, tvlct and PS files. I have a PV-Wave application that has
a section which allows multiple printers to be selected and to indicate
whether the printer is capable of displaying color, as well. If I
select a b/w printer, but select a toggle indicating it could do color
(never trust a user to the right thing), I would get large bands (1/4
to 1/3 the entire page) of black on the printout. I would also get
shaded lines and symbols in the plot area, which is what I had hoped to
see. It turns out that the tvlct calls would screw up the output if
placed between the set_plot calls. When they are moved to outside the
set_plot calls everything works as expected (on color and b/w printers,
regardless of the color on/off toggle). I guess the tvlct call gets
translated into some kind of PS command when done within the set_plot,
commands. I suspect this is the same with IDL. Has anyone else run into
this?
> setplot,'ps'
...
> tvclt,19
I'd suggest switching the position of these two lines.
P.S. Joel, any idea if Hughes STX is still looking for IDL programmers?
Mike Schienle Hughes Santa Barbara Research Center
Home: mgs@seldon.terminus.com Work: rep2857@sbsun0010.sbrc.hac.com
Contract Employee - Will visualize data for large amounts of money
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| Re: color printing [message #4833 is a reply to message #4831] |
Mon, 07 August 1995 00:00 |
offenbrg
Messages: 31
Registered: August 1993
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Member |
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coelke@awi-bremerhaven.de (Christoph Oelke) writes:
> Hello,
> I'm looking for a way to produce post-script files of a high
> quality with IDL. So far I produced my window (tv,...)
> and saved the contents with tvrd(), displayed it in print
> mode with tv,<window-save> and thus produced a ps-file.
> But the quality of this method is not great.
What I do is this:
setplot,'ps'
device,/color,bits=8 ;...and whatever other DEVICE options you want
tvclt,19
tv,blahblah
oplot,blahbhla ;Basically do whatever I did to get it to appear
;in my TV window in the first place. One hint:
;Do everything in normalized or data coordinates...
;device coordinates are strange for PostScript.
device,/close
$lpr -Pcolorprinter idl.ps
You'll get much better-looking output than you would do otherwise. I also
often use true-color images (i.e. 3-plane RGB images) when I'm combining
images into one, so I'm not limited to one color table.
Joel
--
"...And I am unanimous in this" - Mrs. Slocumbe
------------------------------------------------------------ ----------
| Joel D Offenberg | offenbrg@fondue.gsfc.nasa.gov |
| Hughes STX, NASA/GSFC/LASP | I get paid to stare into space. |
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| Re: color printing [message #4840 is a reply to message #4831] |
Fri, 04 August 1995 00:00 |
afl
Messages: 51
Registered: December 1994
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Member |
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In article <3vt29e$5f1@alster.dkrz.de>, coelke@awi-bremerhaven.de (Christoph
Oelke) writes:
|> Hello,
|> I'm looking for a way to produce post-script files of a high
|> quality with IDL. So far I produced my window (tv,...)
|> and saved the contents with tvrd(), displayed it in print
|> mode with tv,<window-save> and thus produced a ps-file.
|> But the quality of this method is not great.
|>
Here is an example...
IDL> loadct, 40
IDL> set_plot, 'ps'
IDL> device, /color ! Check manual for numerous options
IDL> contour,dist(20),c_colors=indgen(22)*12,nlevels=20,/cell_fil l,/xs,/ys
IDL> device, /close
IDL> set_plot, 'X'
PRINT OR VIEW idl.ps
--
Andrew F. Loughe email: afl@cdc.noaa.gov
University of Colorado, CIRES voice: (303) 492-0707
Campus Box 449 fax: (303) 497-7013
Boulder, CO 80309-0449 USA
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