The first mark color in my plot legend is not correct

Hello, When I try to run the following code the first item in the plot legend is marked as yellow, like the second one, while I expected to be blue

x = randn(2, 100);
y = randn(2, 100);
hold on;
pop1 = scatter(x(1,:), y(1,:), 'b*');
pop2 = scatter(x(2,:), y(2,:), 'yo');
params1 = polyfit(x(1,:), y(1,:), 1);
params2 = polyfit(x(2,:), y(2,:), 1);
xcoord = [-10 10];
ycoord = params1(1) * xcoord + params1(2);
plot(xcoord,ycoord, 'g-');
ycoord = params2(1) * xcoord + params2(2);
plot(xcoord,ycoord, 'ro-.');
legend('population 1', 'population 2', 'reg pop 1', 'reg pop 2');

I'm sure I'm doing something wrong. Thank you for any suggestion, kind regards, Milko

[Geoff Hayes]

Milko - typically this problem occurs because more graphics objects have been plotted than you expect. For example, depending upon your input, a call to plot may return more than one graphics object handle. See http://www.mathworks.com/matlabcentral/answers/247736-legend-has-different-color-lines-from-plot-lines for a discussion on this.

However, when I run your above code, each call to scatter and to plot returns a single handle and all four strings in the legend have distinct colours. So it works for me (OS X 10.9.5, R2014a).

Use the debugger to step through your code to ensure that the calls to scatter and plot return a single handle.

[Milko Lupinacci]

Geoff - Thank you. I followed your suggestion and I checked using the debugger that both scatter and plot return a single handle. The version I'm using is R2015b on Windows 10 Pro.