Question

for j= 1:numfiles;
   plot(A(j,:))
   legendmatrix{j,1}=strcat('Run',num2str(j))
   hold all
end
legend(legendmatrix)

hold all allows me to have different colors for all my curves. However when I use the strings from strcat and display them on the plot, not enough colors are used and they are not assigned to the corresponding curve.

In this case plot 1 is run 1 in the legend, etc… and I want the colors to match

Answer 1

Here is a slightly different example:

%# sample data
N = 7;
A = rand(N,10);
x = 1:10;

%# plot each with a specific color
hold on
clr = lines(N);    %# LINES colormap
for j=1:N
   plot(x, A(j,:), 'Color',clr(j,:))
end
hold off

%# add legend
str = cellstr( num2str((1:N)','Run%d') );
legend(str)

Note that if N>7, the LINES colormap will start to repeat colors, but you can always specify your own set of colors… You also have the option of using different markers and line-styles to get more visually distinct data.