How to access global variable inside function. Note that I am using octave. the value of variable 'a' changes continuously. I'm getting syntax error >>> global m(1,1) = a;

for i=1:10
global m(i,1) = a;
function p = h()
  global m(i,1);
  m(i,1)
endfunction
h()

[Shubham Gupta]

Please edit your question by clicking on code button from above toolbar to increase readability of the code. Also did you try ' help global ' for synatx ?

[KSSV]

If the value change why you want to make it global? Using global variable is a bad idea...you better make the variable a input to the function.

[Lakshmikruthiga Ponnusamy]

Actually the idea is updating the changing value of 'a' inside the function. It is not possible to calculate the value of a inside the function.

[Lakshmikruthiga Ponnusamy]

@SHUBHAM GUPTA , I've updated using code button now. I also tried help global, there wasn't any mention of declaring arrays as a variable. I mean m(i,1)

[Walter Roberson]

You appear to be using octave specific features that have no MATLAB counterpart . MATLAB would never permit a function to be defined inside a loop, so we have no analogy in MATLAB to go on. You need to go ask octave questions in an octave forum .

I would have closed this question as being irrelevant to a MATLAB forum but madhan has made aa significant contribution so I will leave it open.

Answer 1

[madhan ravi]

https://www.mathworks.com/matlabcentral/answers/437732-error-using-ofdm_mod-not-enough-input-arguments#answer_354468 - how to use a function

https://www.mathworks.com/help/matlab/math/parameterizing-functions.html - global alternative