| Re: Object Graphics [message #9625 is a reply to message #9421] |
Wed, 23 July 1997 00:00  |
Mirko Vukovic
Messages: 124
Registered: January 1996
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Senior Member |
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David Fanning wrote:
>
> Reinhold Kroll writes:
>
>> Has anybody out there successfully used object graphics
>> from IDL 5.0?
>
> Yes, sort of. :-)
>
> There are several examples of programs written using object
> graphics on my web page. See for example XPLOT, which is
> probably similar to the program you wrote.
>
>> I put a very simple sine wave to the printer object and
>> it creates me a 15 MB file, runs quarter of an hour or
>> so. => completely useless.
>
> You don't say what platform you are using, but I have
> noticed similar things myself. The size of the output
> file with XPLOT, for example, varies depending upon
> what printer I have selected as my default printer. But
> with my windows NT machine, the file varies from 1-1.5 Mbytes
> in size. This is quite a bit larger than a regular PLOT command
> in IDL, but is understandable given the nature of object
> graphics and how they must be rendered. (For example, in
> direct graphics only the two end points of a line are
> required to render the line. In object graphics each pixel
> will essentially be rendered individually, since each
> has a 3D "space" associated with it.)
>
> When I printed XPLOT on my Macintosh, however, the file was
> over 21 MBytes in size (yes, 21, not 2.1!) and it never did
> come out of my printer in the 3.5 hours I waited for it.
> This was the first Mac beta release, and I am assured by the
> folks at RSI that the latest Mac builds to not have this
> problem.
>
> I am also getting strange reports from people who have
> downloaded some of my programs. Some people report ugly
> colors (which I believe is a graphics driver problem of
> some sort), and other people report that some of my
> programs work and others either don't display properly
> (the screen is blank), or they crash their machines. I
> don't know what to make of any of this. The programs work
> great on my machine.
>
> I do know that there are quite a few bugs in the object
> graphics part of IDL (to be expected, really, in such
> a major new release) and I hear that an updated version
> with my bug fixes will be available by the middle of
> August.
>
> Good luck,
>
> David
>
> ------------------------------------------------------------ -
> David Fanning, Ph.D.
> Fanning Software Consulting
> Customizable IDL Programming Courses
> Phone: 970-221-0438 E-Mail: davidf@dfanning.com
> Coyote's Guide to IDL Programming: http://www.dfanning.com
> IDL 5 Reports: http://www.dfanning.com/documents/anomaly5.html
so, should we stay out of oo graphics for now? I'm enjoying oop but
haven't ventured into oog yet mainly because of the file size.
--
Mirko Vukovic, Ph.D 3075 Hansen Way M/S K-109
Novellus Systems Palo Alto, CA, 94304
415/424-4969 mirko.vukovic@varian.grc.com
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