legend with specific colors

hi, how can i use legend with my specific colors and Depth in this code?

figure
for n = 1:length(Lon)
        if Depth(n,1)>=0 && Depth(n,1)<=20
            jj = [0 1 0];
        elseif  Depth(n,1)>20 && Depth(n,1)<=40
            jj = [0 1 1];
        elseif Depth(n,1)>40 && Depth(n,1)<=60
            jj = [0 1 0];
        elseif Depth(n,1)>60 && Depth(n,1)<=90
            jj = [1 0 0];
        elseif Depth(n,1)>90 && Depth(n,1)<=10000
            jj = [0 0 0];
        end
h(n) = plot(Lon(n,1),Lat(n,1),'o','MarkerFaceColor',jj,'MarkerEdgeColor','k'); hold on
legend('0-20','20-40','40-60','60-90','90-10000');
end

Answer 1

[Shubham Gupta]

Right now you are plotting one dataset of 'Lon' and 'Lat' at a time and this will give you a plot with number of datasets equal to the length of 'Lon' vector. You would like to plot all the datasets of 'Lon' and 'Lat' vectors with specific interval at once. So, you will have number of datasets according to the number of intervals you have. which will be easier to show on legend imo.

Here's one way to do it :

interval=[0,20,40,60,90,10000];  % Interval Matrix
col=hsv(length(interval)-1);     % Color matrix for markers
figure
for n = 1:length(interval)-1
        minI=interval(n);        % max of Interval
        maxI=interval(n+1);      % min of Interval
        Ind=find(Depth>=minI&Depth<maxI); % get indeces according to the interval
        plot(Lon(Ind,1),Lat(Ind,1),'o','MarkerFaceColor',col(n,:),'MarkerEdgeColor','k');
        hold on;
end

legend('0-20','20-40','40-60','60-90','90-10000');

I hope this helps.

[milad farshbaf]

This is exactly what i want, tnx tnx :)))