How do i set up a legend for a graph with variable parameters?

Hey,

i want to automize this legend, i do not want to write every case for the parameters.

t = -2:0.1:4;

d = 1;

c = 1;

hold on ;

for A=1:0.2:2

y= A * (t - d).*(t-c) ;

plot (t,y) ;

end

xlim ([-2 4]);

ylim([-1 5]) ;

grid on ;

xlabel('x-Achse');

ylabel('y-Achse');

titletext = 'Funktion f(x) = $A*(x-x1)*(x-x2)$';

title(titletext,Interpreter="latex");

leg = legend('1,0','1,2','1,4','1,6','1,8','2,0', Location='best');

title(leg,'A=');

hold off ;

What ae your Ideas?

And thanks for the help.

Answer 1

[Davide Masiello]

t = -2:0.1:4;
d = 1;
c = 1; 
A = 1:0.2:2;

figure
hold on
for i = 1:length(A)
    y= A(i) * (t - d).*(t-c) ;
    plot (t,y)
end
xlim ([-2 4]);
ylim([-1 5]) ;
grid on
xlabel('x-Achse')
ylabel('y-Achse')
titletext = 'Funktion f(x) = $A*(x-x1)*(x-x2)$';
title(titletext,Interpreter="latex")
legend([repmat('A = ',length(A),1),num2str(A')], Location='best');
hold off

[Davide Masiello]

Also note this can be done without loop

% parameters
t = -2:0.1:4;
d = 1;
c = 1; 
A = 1:0.2:2;

% function
y = A'.*(t - d).*(t-c) ;

% plot
plot (t,y)
xlim ([-2 4]);
ylim([-1 5]) ;
grid on
xlabel('x-Achse',Interpreter="latex")
ylabel('y-Achse',Interpreter="latex")
title('Funktion f(x) = $A*(x-x1)*(x-x2)$',Interpreter="latex")
legend([repmat('A = ',length(A),1),num2str(A')], Location='best',Interpreter="latex");