1. 参考 http://www.thesis123.com/plotting-in-matlab/

dc=hsv(18);           % 18 colours are generated
x = 0:pi/100:2*pi;
hold on                  % you much write this before the plot
i=1;
for d=0:0.2:2,   % 11 lines in plot are taken
 plot(x,sin(x-d),'color',dc(i,:),'linewidth',2)
 i=i+1;
end

2.参考http://stackoverflow.com/questions/37111362/matlab-plot-and-color-samples-based-on-data

nlines=length(concentrations);cmap=hsv(nlines)

c=concentrations-min(concentrations);

c=ceil(c/max(c)*nlines);

for ii=1:nlines

plot(wavelength,dataMatrix(ii,:),'Color',cmap(c(ii),:))

hold on;

end

hold off;