Matlab code error

Question

Can someone please give me a hand? I’m trying to make a program on Octave and it’s giving me the following mistake:

max recursion Depth exceeded

error Caled from

Size at line 3 column 3

spending at line 2 column 5

First I implemented a function used to determine the expenditure of a vehicle, with a consumption c (in liters/100km) when travelling a given distance, dab (given in km), between two cities with altitudes ha and Hb (measured in meters).

function gc = gasto(ha,hb,dab,c)
  if dab == 0
    gc = 0;

  else
    gc = (c/100) * dab * (1+ 100*(hb-ha)/(1000*dab))^2;

  end;
end

Then I implemented a function, expended, to transform a distance matrix, indicated by the Graph parameter, into an expense matrix, C, using the worn function, applicable to non-zero distances.

function G = gastos(Grafo,Altitudes,consumo)
  n = size(Grafo,1);
  G = zeros(n,n);

  for i = 1 : n
    for j = 1 : n

     if Grafo(i,j) == 0;
       G(i,j) = Inf;

     else
       G(i,j) = gasto(Altitudes(i),Altitudes(j),Grafo(i,j),consumo);

     end;
  end;
end

i used Graph = [0.102,89,0,136; 102,0,157,172,39; 89,157,0,58,0; 0,172,58,0,95; 136,39,0,95,0] Altitudes = [100, 160, 85, 90, 130] consumption = 6.5 and when calling the function expended(Graph, Altitudes, consumption) gave me this error , but I did not notice why?

someone can tell me why this mistake is coming up?

Answer 1

This seems to me an error in the function input size.

What is the size of the variable Grafo?

If the variable Grafo is empty, it has zero dimension. If you ask for the number of variables in dimension 1 it will have problems.

max recursion Depth

is a system variable which may be being called, if the Grafo is empty, in this case dimension 1 is larger than the dimension limit. But this is just an idea.

Unfortunately the function manual size does not give more details.

Running with the values added to your question, I got

G=[       Inf    7.4329    5.5916       Inf    9.2343
    5.8729       Inf    9.2533   10.2885    2.1600
    5.9816   11.2033       Inf    3.8353       Inf
       Inf   12.1085    3.7053       Inf    6.7059
    8.4543    2.9400       Inf    5.6659       Inf]

Which is what I expected (I didn’t check the figures).