| Re: Multiple surface plotting [message #25273] |
Thu, 31 May 2001 08:43 |
Dick Jackson
Messages: 347
Registered: August 1998
|
Senior Member |
|
|
Hi Paul,
"Paul van Delst" <paul.vandelst@noaa.gov> wrote...
> If OG can produce the pretty pictures in less time, great! Where do I
> start? :o)
Just a few days back (May 25) I wrote a reply on this topic "Re: Object
Graphics newbie question", I'll just quote a bit of it here. If you just
want to drop some objects in 3-space, find the right view and print (or
export to image or VRML), the IDL example program XObjView works very
nicely:
Here's an example of how easy XObjView is to use (code example attached
to this message as .pro file... hope it works for you):
=====
m=obj_new('IDLgrSurface', Dist(30), Color=[255,0,255], Style=2, $
Shading=1, Name='Wide Magenta Surface')
g=obj_new('IDLgrSurface', Dist(10)*5, Color=[0,255,0], Style=2, $
Shading=1, Name='Tall Green Surface')
xobjview,[m,g]
=====
Cheers,
--
-Dick
Dick Jackson / dick@d-jackson.com
D-Jackson Software Consulting / http://www.d-jackson.com
Calgary, Alberta, Canada / +1-403-242-7398 / Fax: 241-7392
begin 666 ex0.pro
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@<F9A8V4G*0T*>&]B:G9I97<L6VTL9UT-"@T*96YD#0H`
`
end
|
|
|
|
| Re: Multiple surface plotting [message #25282 is a reply to message #25273] |
Wed, 30 May 2001 15:32  |
m.hadfield
Messages: 36
Registered: April 2001
|
Member |
|
|
From: "Paul van Delst" <paul.vandelst@noaa.gov>
> Regarding the OG solution - the learning curve is too steep for my time
allowance for the task. The
> number crunching part took, oh, about a day. Producing pretty output was
secondary and mostly to let
> the higher ups know I'm earning my pay. Via direct graphics it's taken me
about half a day just to
> produce the eye-candy (the number crunching was easy after futzing about
with reading all manner of
> other people's input files). If OG can produce the pretty pictures in less
time, great! Where do I
> start? :o)
Go to...
http://katipo.niwa.cri.nz/~hadfield/gust/software/idl/
...and get the library, then run mgh_example_surface, which, you will see,
is 51 lines long (and most of them are comments or blank). I just added a
second surface to the graph for you!
Or you could get David's object graphics surface routine and work out how to
add additional surfaces. Shouldn't be too hard.
---
Mark Hadfield
m.hadfield@niwa.cri.nz http://katipo.niwa.cri.nz/~hadfield
National Institute for Water and Atmospheric Research
--
Posted from clam.niwa.cri.nz [202.36.29.1]
via Mailgate.ORG Server - http://www.Mailgate.ORG
|
|
|
|
| Re: Multiple surface plotting [message #25283 is a reply to message #25282] |
Wed, 30 May 2001 14:18 |
Paul van Delst
Messages: 364
Registered: March 1997
|
Senior Member |
|
|
David Fanning wrote:
>
> Paul van Delst (paul.vandelst@noaa.gov) writes:
>
>> I want to plot out a number of intersecting surfaces, different colours, some shaded, some gridded.
>> After some inquiries, I was lead to Struan Gray's excellent web page and once I figured out how to
>> use the Z-buffer, I had great looking plots of exactly what I wanted .... onscreen (or in a web
>> page).
>>
>> When I output to a file using the recommended TVRD() from z-buffer and then tv'ing after a
>> set_plot,'PS', or writing the tvrd() result to a png file is a result that looks quite awful when
>> printed.
>>
>> What I would dearly love to do would be to create postscript output directly rather than doing a
>> TVRD() of the z-buffer and then tv'ing it to PS output. Does anyone know if this is possible and if
>> so, how? All the z-buffer exmaples I've seen use TVRD() and TV for output.
>
> Well, here are two suggestions:
>
> (1) That Z-buffer can be made pretty darn big. Big enough,
> probably, so that you could make nice PostScript output.
>
> (2) Do the same thing in object graphics. The object graphics
> system *is* a Z-buffer!
So the answer is effectively no. I figured as much. Nuts.
Regarding the OG solution - the learning curve is too steep for my time allowance for the task. The
number crunching part took, oh, about a day. Producing pretty output was secondary and mostly to let
the higher ups know I'm earning my pay. Via direct graphics it's taken me about half a day just to
produce the eye-candy (the number crunching was easy after futzing about with reading all manner of
other people's input files). If OG can produce the pretty pictures in less time, great! Where do I
start? :o)
Thanks for the z-buffer size hint....I'll give that a shot thursdee.
paulv
--
Paul van Delst A little learning is a dangerous thing;
CIMSS @ NOAA/NCEP Drink deep, or taste not the Pierian spring;
Ph: (301)763-8000 x7274 There shallow draughts intoxicate the brain,
Fax:(301)763-8545 And drinking largely sobers us again.
Alexander Pope.
|
|
|
|
| Re: Multiple surface plotting [message #25284 is a reply to message #25283] |
Wed, 30 May 2001 13:02 |
davidf
Messages: 2866
Registered: September 1996
|
Senior Member |
|
|
Paul van Delst (paul.vandelst@noaa.gov) writes:
> I want to plot out a number of intersecting surfaces, different colours, some shaded, some gridded.
> After some inquiries, I was lead to Struan Gray's excellent web page and once I figured out how to
> use the Z-buffer, I had great looking plots of exactly what I wanted .... onscreen (or in a web
> page).
>
> When I output to a file using the recommended TVRD() from z-buffer and then tv'ing after a
> set_plot,'PS', or writing the tvrd() result to a png file is a result that looks quite awful when
> printed.
>
> What I would dearly love to do would be to create postscript output directly rather than doing a
> TVRD() of the z-buffer and then tv'ing it to PS output. Does anyone know if this is possible and if
> so, how? All the z-buffer exmaples I've seen use TVRD() and TV for output.
Well, here are two suggestions:
(1) That Z-buffer can be made pretty darn big. Big enough,
probably, so that you could make nice PostScript output.
(2) Do the same thing in object graphics. The object graphics
system *is* a Z-buffer!
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
