How to include labels to a plot?

So I have some coordinates and I want to include some labels on my plot.

force = 30;

displacement = [10 20 30 40];

cases = ['This is case 1' 'This is case 2' 'This is case 3' 'This is case 4'];

plot (force, displacement, 'x')

for i =1:length(displacement)

text(force, displacement(i), ['\leftarrow ', cases(i)]);

end

I know the problem is with either line 3 or line 6 because cases is saved as char and when I call cases(i) in line 6 it displays only the individual characters instead of everything that is inside the quotation(' ') marks. Does anyone know how to fix this?

Answer 1

[Kevin Holly]

force = 30;
displacement = [10 20 30 40];
cases = ["This is case 1"  "This is case 2"  "This is case 3"  "This is case 4"];
plot (force, displacement, 'x')
for i =1:length(displacement)
    text(force, displacement(i), ['\leftarrow ', char(cases(i))]);
end

[Andrei]

Thank you for your help. Do you mind explaining why it works when

cases = ["This is case 1" "This is case 2" "This is case 3" "This is case 4"];

and not when

cases = ['This is case 1' 'This is case 2' 'This is case 3' 'This is case 4'];

[Kevin Holly]

Using double quotes creates a string array, where characters enclosed are treated as a single elements.

string_array = "This is case 1";
size(string_array)

ans = 1×2

1 1

Character arrays use single quotes. In this case, each character is treated as a separate element.

character_array = 'This is case 1';
size(character_array)

ans = 1×2

1 14

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