POV-Ray : Newsgroups : povray.windows : How to generate sphere and cylinder with csv file : Re: How to generate sphere and cylinder with csv file Server Time
28 May 2024 10:35:23 EDT (-0400)
  Re: How to generate sphere and cylinder with csv file  
From: Jeff
Date: 6 Apr 2017 01:05:00
Message: <web.58e5cc16ae95604b653b97b10@news.povray.org>
"Bald Eagle" <cre### [at] netscapenet> wrote:
> "Jeff" <jef### [at] gmailcom> wrote:
>
> You just need to hit F1 and type in image_map.
> or search around the web
> http://www.joshuarenglish.com/cyclopedia/image_planar.html
> http://www.f-lohmueller.de/pov_tut/tex/tex_870e.htm
>
>
> > another question is , is it possible to rotate, zoom in and zoom out freely in
> > POV-RAY?
>
> Of course.  Read the docs on the camera {}
> You can zoom in, out, rotate, pan, translate, change camera angle, and use all
> sorts of different camera types other than the usual perspective camera.
>
> > i mean, when you have thousands or even millions nodes and links and its so many
> > of em, that you need to put your camera far far away, but then the nodes and
> > links are sooooo small.
>
> Yes, that's a problem with a whole field of study - presentation, analysis, and
> visualization of multidimensional data.
>
> > so, how to deliver the information effectively that people can see all of the
> > nodes and links, but at the same time its not too small (or too hard) to see?
> > is there any solutions to solve this problem in POV-RAY?
>
> There's the size of the nodes, the thickness of the connecting lines, the
> contrast between those and the background, etc.
>
> > so, how did you do it in your experience that you have done it with millions of
> > em?
>
> Well, you have to determine what you want to show, and why.
> Then you have to do the math to place the camera and adjust the view angle and
> zoom.
>
> I'd work on just getting the simple overlays to look good, as that will likely
> take some time to get scaled and transparently overlaid properly.
> Then see how all the data points look once they're all plotted on the map(s)


Hi, when i try to run the code it says "Parse Error: Expected'float,vector,or
string literal', string identifier found instead".

do you know what cause the problem?


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