[yt-users] line callback

[Luigi Iapichino]

Thanks Matt,

this is exactly what I was looking for!
Cheers,

  Luigi

On Tuesday 23 August 2011, Matthew Turk wrote:
> Hi Luigi,
>
> On Tue, Aug 23, 2011 at 5:15 AM, Luigi Iapichino
>
> <luigi at uni-heidelberg.de> wrote:
> > Dear all,
> >
> > I would like to overplot a line to a slice of mine. I use the line
> > callback, for example with the following sintax:
> >
> > p.modify["line"]((0,639),(30,30))
> >
> > if I have well understood, the two pairs of numbers are pixel-based
> > coordinates. I have a few questions:
> >
> > 1) where is the range of these number set (i.e., the image size in
> > pixel), and how can I eventually modify it?
>
> It's usually set in the figure creation.
>
> > 2) Is it any simple way to define the begin and end points of a line in
> > other coordinates? Code coordinates from 0 to 1 would be enough;
>
> Yup, use the 'image_line' callback instead.  (We really need a better
> documentation system for the callbacks!)
>
> > 3) How do I modify the features of the line (e.g. thickness, color)?
>
> You can supply a dict as the keyword plot_args, which will get passed
> to matplotlib's 'plot' command.  So any arguments can be supplied to
> that.  i.e.,
>
> p.modify["image_line"]((0.1,0.3), (0.4,0.5), plot_args={'c':'b', 'lw':2.5})
>
> This sets color to blue, linewidth to 2.5.
>
> -Matt
>
> > Thanks in advance,
> >
> >  Luigi
> >
> > --
> >
> > ---------------------------------------------------------------
> >
> > Luigi Iapichino
> > Zentrum für Astronomie der Universität Heidelberg
> > Institut für Theoretische Astrophysik
> > Albert-Ueberle-Str. 2, D-69120 Heidelberg, Germany
> > Tel: +49 6221 548983, Fax: +49 6221 544221
> > e-mail: luigi at uni-heidelberg.de
> > URL: http://www.ita.uni-heidelberg.de/~luigi/
> > _______________________________________________
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>
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-- 

---------------------------------------------------------------

Luigi Iapichino
Zentrum für Astronomie der Universität Heidelberg
Institut für Theoretische Astrophysik
Albert-Ueberle-Str. 2, D-69120 Heidelberg, Germany
Tel: +49 6221 548983, Fax: +49 6221 544221
e-mail: luigi at uni-heidelberg.de
URL: http://www.ita.uni-heidelberg.de/~luigi/