Can I define variable in matlab?

Do we need any particular command if i need variable. If A=[1 2 3] i need this as: A=[X1 X2 X3]

[Steven Lord]

Can you say a little more about what you're trying to do, how you would use that A matrix later in your code?

[dpb]

Anticipating that, most likely this isn't the way to proceed; see the section "Alternatives to the eval Function" at

doc eval

particularly the second, "Variables with Sequential Names"

[kritika adhikari]

I am writing a program where I need matrix with its element in variable form. I cannot do it directly just by writing variable inside the matrix. I need to create program for that. I tried this way but does not work

int_data=[4 2 1 5 6 3]
for i=1:6
t=int_data(i)
y(i)=X(t)
end

[KSSV]

what you are trying to do is not clear.

[kritika adhikari]

hello I need a matrix with variable in it.

[ES]

From what I understand from your code, you can simply put

y = X (int_data);

If this is not what you need, Please say what are your inputs and outputs? The code you have provided is not enough!

[kritika adhikari]

Actually m designing an interleaver. So what I need is to pass the blocks of message. That messages are in variable form . The interleaver will be constructed in such a way that the messages that has been passed will appear in matrix form with variables but not with binary digits.

[Walter Roberson]

Well, then what I posted will allow you to do that. You should go ahead and try and see if it works for your needs.

I think you are making a mistake, though. The output from an interleaver would normally be symbols, not variables. For practical purposes, the symbols would normally be encoded as non-negative integers that could be used as indices.

Answer 1

[Walter Roberson]

int_data=[4 2 1 5 6 3]
X = sym('X', [1, max(int_data)]);

y = X(int_data);

The result would be

y = [X4 X2 X1 X5 X6 X3]

[kritika adhikari]

Yeah I got It. Actually you were right. The output from interleaver are not variables. Thank you so much.

Answer 2

[ES]

From what I understand from your code, you can simply put

y = X (int_data);

[ Example:

X = [2,4,6,8,10,12,14,16,18]

int_data=[4 2 1 5 6 3];

disp(X(int_data));

>> 8 4 2 10 12 6

]

If this is not what you need, Please say what are your inputs and outputs? The code you have provided is not enough!