MathGroup Archive 2012

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Plotting a line with color changing as a function of position

It turns out that there is a capability that will do just what you
want, ColorFunction. Look it up in the online help for more
information. Here is an example:

Module[{x1 = 0, y1 = 0, x2 = 10, y2 = 10, m, b},
  m = (y2 - y1)/(x2 - x1);
  b = (x2*y1 - x1*y2)/(x2 - x1);
  Plot[m*x + b, {x, -1, 11},
    ColorFunction -> Function[{x, y}, Hue[Cos[Norm[{x, y} - {x1,
    ColorFunctionScaling -> False,
    PlotStyle -> Directive at {Thickness[0.01]}

In order to vary thickness or dash interval I think you will have to
build the plot through construction. Thickness could be managed with
the Filling option for Plot using two curves.

On Jan 14, 2:58 am, "Eric Michielssen" <emich... at>
> Hello,
> I would like to plot/draw a line between two points p1= (x1,y1} and
> p2={x2,y2}, and I would like the line color (preferred) or thickness or dash
> density  to be reflective of a known function f(d) that measures the
> distance d from p1 to the point on the line.
> Say p1={x1,y1}={0.,0.}, p2={10.,10}, and f[d_]:=Cos[d].
> Is this possible?
> Thanks!
> Eric
> Eric Michielssen

  • Prev by Date: NDSolve for BVP: Increasing MaxIterations, reverse direction
  • Next by Date: Re: split a number to Date format
  • Previous by thread: Re: Plotting a line with color changing as a function of position
  • Next by thread: Import LaTeX