Setting linestyle/color when plotting matrix.

[Robert T. Short]

Suppose I am plotting a matrix, e.g.

> t = (0:0.01:1).';
> y = [sin(2*pi*t), sin(3*pi*t), sin(4*pi*t)];
> plot(t,y)

I can set color and linestyle using
> plot(t,y,['-r';'--k';':c']);

However if I try

> plot(t,y,'color', ['r';'k';'c'], 'linestyle',['-';'--';':']);
error: invalid value = -
error: set: invalid value for radio property "linestyle" (value = - )

similarly
> plot(t,y,'color', ['r';'k';'c']);

works but all of the lines are red.

How do I set line properties for matrices using color, linestyle, etc.?

I am using octave 3.6.2 on a debian system.

Bob