清空筛选条件
清空筛选条件

Not enough input arguments. length()

15 次查看（过去 30 天）
Patrick Arraki
Patrick Arraki 2021-5-22
回答： Kiran Felix Robert 2021-6-7
Hey,
I wrote a function that should execute a DFT. I know there is FFT, but it's a college job.I don't understand why length doesn't work for the best of me.mainly because it worked without any problems in previous functions.
Could someone tell me what I'm doing wrong?
I googled and only found solutions to problems caused by misspellings.
Here is my code:
function[S] = DFT(s)
N = length(s); %<- thats what the error caused
X = 1:N;
for m = 1 : N
for k = 1 : N
X(m) = X(m) + s(k) * exp(-(1i*pi*2*k*m*(1/N)));
S(m) = X(m);
end
end
end
  2 个评论
Les Beckham
Les Beckham 2021-5-22
How did you call the function? You can't just press the Run button. You need to provide the input data.
per isakson
per isakson 2021-5-22
编辑：per isakson 2021-5-22
How did you call the DFT ? What was the value of s ?

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Kiran Felix Robert
Hi Partick,
Check the input argument when you call the DFT Function.
When you call from the command-line, provide sufficient input arguments.
On the Run button, use the extra options (type code to run) and provide proper input arguments to the function.
Try using a break point just after calling the function to debug the input argument data type.

类别

在 Help Center 和 File Exchange 中查找有关 Mathematics 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by