Reset ColorOrder index for plotting in Matlab / Octave

Question

I have matrices x1, x2, ... containing variable number of row vectors. I do successive plots

figure
hold all % or hold on
plot(x1\'         


        

Answer 1

Define a function that intercepts the call to plot and sets 'ColorOrderIndex' to 1 before doing the actual plot.

function plot(varargin)
if strcmp(class(varargin{1}), 'matlab.graphics.axis.Axes')
    h = varargin{1}; %// axes are specified
else
    h = gca; %// axes are not specified: use current axes
end
set(h, 'ColorOrderIndex', 1) %// reset color index
builtin('plot', (varargin{:})) %// call builtin plot function

I have tested this in Matlab R2014b.