Re: Possible more TODO features

[Ethan M. <merritt@u.washington.edu>]

On Wednesday 14 March 2007 16:05, Daniel J Sebald wrote:
> 
> set arrow 1 from -2,0 to -10,0 nohead lc rgb "black"
> set arrow 2 from -2,0 to -2+10*cos(pi/3),0+10*sin(pi/3) nohead lc rgb "black"
> set arrow 3 from -2,0 to -2+10*cos(-pi/3),0+10*sin(-pi/3) nohead lc rgb "black"
> 
> 1) I'd like the asymptotes to be dashed lines.  Is it possible to do so, 
> I mean generally speaking for all terminals? 

No. Not all terminals can draw dotted lines.  Them's the breaks.
 
> 2) Note how the lines are not clipped at the boundaries.  

Correct. Only the plots themselves are clipped to the plot boundaries.
That is a feature.
Otherwise you obviously couldn't place arrows and labels in the borders.

 
> 4) As Ethan mentioned, do this with lines so that clipping behaves as desired.  
> But I then have to set up the sampling so that a sample point lands on (-2,0), 
> and do this as parametric so that I can get portions of lines.  

???
No idea what you are talking about with points, sampling, parametric.
All garbage. If you want a line through (-2,0) with a defined slope S

  line1(x) = S*(x+2)
  plot line1(x)

If you want only a portion of that line, you set bounds:
  line1(x) = x < lower ? NaN : x > upper ? NaN : S*(x+2)

But if that's what you want then you could have used arrows as you
originally showed.  And you don't need clipping if you're setting
the bounds yourself.

-- 
Ethan A Merritt            Courier Deliveries: 1959 NE Pacific
Dept of Biochemistry
Health Sciences Building
University of Washington - Seattle WA 98195-7742