Hello, How can I use output data from a function as input data to another function?

I have one matrix get it from one function how can use this matrix as input to other function

Answer 1

[Geoff Hayes]

salim - presumably your functions are as described at Declare function name, inputs, and outputs and so both have signatures of the form

 function [y1,y2,...,yN] = myfun(x1,...,xM)

If your first function returns a matrix, then you can pass that as input parameter into your second function.

Suppose we have a function that generates a transition matrix, F, as

 % input parameter t: time in seconds
 % output parameter F: transition matrix
 function [F] = generateTransitionMatrix(t)

Now suppose we have a second function that calculates the updated state/position given this transition matrix

 % input parameter F: transition matrix
 % input parameter x: current state vector
 % output parameter xp: updated state vector
 function [xp] = updateState(F,x)

Our code would then look something like

 >> t = 5.0;
 >> x = rand(4,1);
 >> F = generateTransitionMatrix(t);
 >> xp = updateState(F,x);

Our first function returns a matrix that we then use as an input into the second function.

[salim wadi]

Thanks Dear Geoff Hayes, Actually, I do that first function is * function [wm, AG, WI, HI, hn, IVn, H2OI, AR, rxyOI, AC, ACC, ACF, H2CI, rxyCI] =AESCipher(A, sb_hex, key_hex,IV)* and 2nd function is * function [DCI, H2DI, rxyDI] = AESdecr( sb_hex, Invs_box, IV,wm, AC, ACF, WI, HI)* . So the important matrix is AC, where when execute 2nd function an massage appear (undefined parameter AC).

[Geoff Hayes]

salim - are you passing in AC into the second function? How are you calling this second question? Please post the code which shows how you are using both functions.