How can i group some vectors by the last value ?

hey, I am really new in Matlab so please be gentle :) I have this matrix:

    data = [-3 1 0;
          -3 3 1;
          -2 1 0;
          -2 4 1;
          -1 3 1;
          -1 4 1;
           2 2 0;
           2 4 1;
           3 2 0;
           4 1 0;];

and I want to draw them in a 2D axis using

gscatter(data(:,1),data(:,2)

All points with 0 should be red colored and all points with 1 should be blue colored.

I know that I can use "gscatter" with "group" for that but I don't know how to group that data.

Thanks for your answers Cheers Christoph

Answer 1

[Majid Farzaneh]

Hi, it's all you want:

data = [-3 1 0;
          -3 3 1;
          -2 1 0;
          -2 4 1;
          -1 3 1;
          -1 4 1;
           2 2 0;
           2 4 1;
           3 2 0;
           4 1 0;];
group=data(:,3);
gscatter(data(:,1),data(:,2),group,'rb','xo')

[Christoph Meyer]

great thanks :D I haven't known how grouping worked.

[Majid Farzaneh]

'rb' means first group will be 'red' and second group will be 'blue'. 'xo' means first group points will be 'x' and the seconds will be 'o'.

you can change them if you want. good luck

[Majid Farzaneh]

You're welcome :)