How to link subgroup data points together in a plot?

I have matrix A like the below. The first column is the group number.

% GroupNo, X, Y
1, x1, y1
1, x2, y2
1, x3, y3
2, x4, y4
2, x5, y5

It's very important I plot them together like the below:

h = plot(A(:,2), A(:,3),'ro');

My question is how do I link all the data points in Group 1, Group 2, ..., respectively? I could have unknow number of groups.

When I say "link", I mean, to plot using "o-", instead of "o'.

Thanks

Answer 1

[darova]

What about this?

hold on
A1 = unique(A(:,1));
cmark = {'o' '*' '.'};
for i = 1:numel(A1)
    ix = A(:,1)==A1(i);
    h(i) = plot(A(ix,2),A(ix,3),...
        'marker',cmark{randi(3,1)},...
        'color',rand(1,3));
end

[darova]

Or maybe scatter

scatter(A(:,2),A(:,3),[],A(:,1),'fill')

[darova]

Don't like scatter. It's very slow

[Leon]

Many thanks, Everyone!

[darova]

Many thanks to me only. It was me. Im the only one here

[Leon]

hehe :-)

Really appreciate your big help. The code works like a miracle!

[darova]

you are welcome