How to assign point name to points in an array and then plot them ?

Hi all, I would like to name my points that are inside a matrix. and then plot them.

clc; clear all; close all;
A = [0,1.5+1.5i,4.5i,-6.75+6.75i,-20.25];
plot(A,'o')

I am not english speaker, please use simple terms for answer.

Thank you very much.

Answer 1

[Walter Roberson]

A = [0,1.5+1.5i,4.5i,-6.75+6.75i,-20.25];
Anames = {'', 'start', 'impulse', 'peak', 'relax'};
Ar = real(A);
Aim = imag(A);
scatter(Ar, Aim, 'ro');
text(Ar, Aim + 0.2, Anames, 'HorizontalAlignment', 'left')

[Naïm]

thank you very much

Answer 2

[Matt J]

Hi all, I would like to name my points that are inside a matrix.

You could convert the matrix to a table with row names that you would provide, e.g.,

A = [0,1.5+1.5i,4.5i,-6.75+6.75i,-20.25];

names={'Jack','Fred','Emily','Carol','Donald'};

T=array2table(A(:),'Row',names)

T = 5×1 table
                  Var1    
              ____________

    Jack           0+0i   
    Fred         1.5+1.5i 
    Emily          0+4.5i 
    Carol      -6.75+6.75i
    Donald    -20.25+0i   

[Naïm]

merci monsieur

[Naïm]

I think i miswrote my question, I want to plot the points with names

Answer 3

[Matt J]

names={'Jack','Fred','Emily','Carol','Donald'};
A = [0,1.5+1.5i,4.5i,-6.75+6.75i,-20.25];
n=numel(A);

H=plot(graph(speye(n),'omitself'),...
    'XData',real(A),'YData',imag(A),'NodeLabel',names);