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Re: objects graphics?
- Subject: Re: objects graphics?
- From: davidf(at)dfanning.com (David Fanning)
- Date: Wed, 23 Feb 2000 13:39:10 -0700
- Newsgroups: comp.lang.idl-pvwave
- Organization: Fanning Software Consulting
- References: <38B3A421.6EA7E55E@ieo.rcanaria.es>
- Xref: news.doit.wisc.edu comp.lang.idl-pvwave:18588
Pedro Velez-Belchi (firstname.lastname@example.org) writes:
> I have been using IDL for long time as well as matlab 5.x. Now that
> is possible to use object graphics in IDL i would like to learn it. My
> experience in matlab tell me that OG is really easy (handles is called
> in matlab), but, I have looked to some OG codes (as Xplot from David)
> and it seems really hard. It seems that IDL OG are really much more
> complicated as the analogous in matlab. Does anybody have the same
> feeling or just I am doing something wrong?
I wouldn't say it is hard. But it is nearly impossible to
figure out from the documentation that normally comes with
And it wouldn't really be so hard to figure out, I
guess, if you could just forget everything you know
about IDL direct graphics and come at it as a complete
novice. What is really hard about it is trying to compare
it with what you already know. And that, I can tell you
from personal experience, is a disaster.
The object graphics system is at a very low level. I
think that more than anything else is what scares people off.
You do have to create and put together a lot of graphic
"atoms" to get something as simple as a line or surface
plot. I've almost got a couple of chapters done that
explains this whole process in considerable detail. I
thought I would release those chapters in PDF format
ahead of my whole book.
In the meantime, you might want to take one of the IDL
Advanced Programming Courses. I think they are very good
and certainly will take much of the mystery out of object
graphics for you. In fact, I'm teaching a couple of these
courses in Europe next month: March 27-30 in the UK, and
April 4-7 in Copenhagen. Let me know if you want more
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: email@example.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155