Not enough input arguments (line 2)
조회 수: 6 (최근 30일)
이전 댓글 표시
Using the two functions I have defined so far (nonsense and printstuff) to run the for loop at the end. When running the for loop, it turns me back to the nonsense .m file and says 'not enough input arguments' (line2). Can anyone help with this?
NONSENSE:
function y=nonsense(x)
if mod(x,2) == 0
disp(x^2);
else
disp(0);
end
end
PRINTSTUFF:
function printstuff(func,values)
fprintf('Function evaluated at %d points: \n',length(values))
for q = 1:length(values)
fprintf('point %0.6f has value %0.6f\n',values(q),func(values(q)))
end
end
FOR LOOP:
printstuff(nonsense,[4 11 15 20])
for x = [4 11 15 20]
nonsense(x);
end
댓글 수: 1
Stephen23
2023년 1월 24일
편집: Stephen23
2023년 1월 24일
The function NONSENSE requires one input argument when it is called.
Here you are calling NONSENSE with zero input arguments:
printstuff(nonsense,[4 11 15 20])
% ^^^^^^^^ calling with zero input arguments.
What do you expect that to achieve? It seems that you need to use a function handle.
채택된 답변
Stephen23
2023년 1월 24일
편집: Stephen23
2023년 1월 24일
You need to learn about function handles:
I also had to fix your code because you had not defined the output argument "y" inside NONSENSE().
% v !!! define function handle !!!
printstuff(@nonsense,[4,11,15,20])
function y = nonsense(x)
if mod(x,2) == 0
y = x^2;
else
y = 0;
end
end
function printstuff(func,values)
fprintf('Function evaluated at %d points: \n',length(values))
for q = 1:length(values)
fprintf('point %0.6f has value %0.6f\n',values(q),func(values(q)))
end
end
댓글 수: 2
Stephen23
2023년 1월 24일
"Not sure if info on this is in the documentation, but what exactly does the @ do?"
추가 답변 (1개)
Arif Hoq
2023년 1월 24일
x=12:10:42;
out=nonsense(x);
function y=nonsense(x)
if mod(x,2) == 0
y=x.^2;
else
y=0;
end
disp(y)
end
댓글 수: 2
Arif Hoq
2023년 1월 24일
You can do it with a single function.
x = [4 11 15 20];
% x=[4 8 12 16 20];
out=nonsense(x);
function y=nonsense(x)
fprintf('Function evaluated at %d points: \n',length(x))
for i=1:length(x)
if mod(x(i),2) == 0
y=x(i).^2;
fprintf('point %0.6f has value %0.6f\n',x(i),y)
else
y=0;
fprintf('point %0.6f has no value %0.6f\n',x(i),y)
end
end
end
참고 항목
카테고리
Help Center 및 File Exchange에서 Get Started with MATLAB에 대해 자세히 알아보기
제품
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!