help im getting this error

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al rezi
al rezi on 24 May 2022
Commented: DGM on 25 May 2022
zerocross(F, ukuran, sigma)
Unrecognized function or variable 'ukuran'.
i got that message here's my code
function [K] = zerocross(F,ukuran,sigma)
% ZEROCROSS Pemerolehan tepi objek pada citra F
% melalui operator Marr-Hildreth
% Hasil: citra K
H = cadarLoG(ukuran,sigma);
pembulatan = false;
potong = true;
G = deteksi(F, H, potong, pembulatan);
% Proses zero crossing
K = zeros(size(G));
[m, n] = size(K);
for y=2 : m-1
for x=2: n-1
jum = 0;
for p = x-1 : x
for q = y-1 : y
jum = jum + G(q,p);
end
end
rerata0 = jum / 4;
jum = 0;
for p = x-1 : x
for q = y : y+1
jum = jum + G(q,p);
end
end
rerata1 = jum / 4;
jum = 0;
for p = x : x+1
for q = y-1 : y
jum = jum + G(q,p);
end
end
rerata2 = jum / 4;
jum = 0;
for p = x : x+1
for q = y : y+1
jum = jum + G(q,p);
end
end
rerata3 = jum / 4;
terbesar = max([rerata0 rerata1 rerata2 rerata3]);
terkecil = min([rerata0 rerata1 rerata2 rerata3]);
if (terbesar > 0) && (terkecil < 0)
K(y,x) = 255;
end
end
end
return
  5 Comments
DGM
DGM on 25 May 2022
If you were calling the function without any arguments, that's not the error you would be getting.
% these variables exist in a different scope
% they have nothing to do with the A,B,and C which are local to myfunct
A = 1;
B = 2;
C = 3;
myfunct % improperly calling the function without any inputs or outputs
Not enough input arguments.

Error in solution>myfunct (line 10)
x = A; % error occurs when you try to use a missing argument
function out = myfunct(A,B,C) % requires 3 input arguments
x = A; % error occurs when you try to use a missing argument
y = B;
z = C;
out = x + y + z;
end

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Answers (1)

Walter Roberson
Walter Roberson on 24 May 2022
zerocross(F, ukuran, sigma)
at the time you invoked zerocross with that line, you had not defined ukuran. Possibly you had not defined sigma either, but you had defined F

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