Dynamic array variables problems

Hi all, I have some troubles in making an dynamic array. My following code is as follow but get an error.

N = 10;     
for k=1:N
    for j = 1:5
    temp_var = strcat('v_',num2str(k));
    eval(sprintf('%s = %g',temp_var(j), j*2));
    end
end

Basically I want to have a dynamic array of

v_1(1) =2

v_1(2) =4

v_1(3) =6

v_1(4) =8

v_1(5) =10

v_2(1) = 2

v_2(2) = 4

etc...etc

And so when I print out v_1 it gives 2 4 6 8 10, do does v_2 , v_3 ... v_10. Would anyone offer me some help? Thanks a lot.

Answer 1

[Vilém Frynta]

You really should not do this. It's bit tricky to do and.. it will strike back later.

Better solution would be to create a structure and save your numbers there.

v = struct();

nums = 2:2:10;

v.field1 = nums;
v.field2 = nums

v = struct with fields:
    field1: [2 4 6 8 10]
    field2: [2 4 6 8 10]

Could also be (easily) made in for loop as well.

s = struct();

for q = 1:10
    s.(sprintf('field%d',q)) = nums;
end

disp(s)

     field1: [2 4 6 8 10]
     field2: [2 4 6 8 10]
     field3: [2 4 6 8 10]
     field4: [2 4 6 8 10]
     field5: [2 4 6 8 10]
     field6: [2 4 6 8 10]
     field7: [2 4 6 8 10]
     field8: [2 4 6 8 10]
     field9: [2 4 6 8 10]
    field10: [2 4 6 8 10]