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How to solve this error "Not enough input arguments."

조회 수: 208 (최근 30일)
Tony Castillo
Tony Castillo 2020년 2월 14일
편집: Walter Roberson 2023년 11월 21일
Dear all,
I have this code, though, I have previously defined all the variables, it still persist a message:
Not enough input arguments.
Error in Riesgo_C (line 2)
aux1 = V_in(V_in(:,12) == BATT,:);
The function:
function [deltaSOC] = Riesgo_C(V_in,BATT,PV,IRR)
aux1 = V_in(V_in(:,12) == BATT,:);
aux2 = aux1(aux1(:,11) == PV,:);
auxD = aux2(:,[2;4;6;8;10]);
auxI = aux2(:,[1;3;5;7;9]);
p = polyfit(auxI(1,:),auxD(1,:),1);
deltaSOC = polyval(p,IRR);
end
  댓글 수: 2
Adam
Adam 2020년 2월 14일
Functions have to be called with arguments actually passed in as they have their own sealed workspace, unlike a script. They know nothing at all about what exists in the calling workspace so you have to call the function as
[deltaSOC] = Riesgo_C(V_in,BATT,PV,IRR);
when you call it in order for it to have the inputs it needs.
Tony Castillo
Tony Castillo 2020년 2월 17일
Thanks Adam

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채택된 답변

Jon
Jon 2020년 2월 14일
Your function requires 4 input arguments. You must have called it with less than 4 input arguments. Please check your code where you call the Riesgo function to make sure that you in fact have 4 input arguments. If you can not find the mistake, then please copy the exact code where you call the function and post it here.
  댓글 수: 4
Tony Castillo
Tony Castillo 2020년 2월 14일
Because I have not made a call to my function yet, I just was testing it with the variables loaded in the workspace, might it be the problem ?
Jon
Jon 2020년 2월 14일
So then please copy and paste the command you are issuing to call it from the command line that produces the error. I think that you probably forgot to include one of the input parameters. You need to have 4.

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추가 답변 (1개)

madhu
madhu 2023년 11월 21일
Not enough input arguments.
Error in mylaplasian (line 6)
[rows, cols]=size(g);
  댓글 수: 1
Walter Roberson
Walter Roberson 2023년 11월 21일
편집: Walter Roberson 2023년 11월 21일
You are running a function named mylaplasian which accepts one or more inputs, one of which is named g in the function. But when you run mylaplasian then you are not passing in enough parameters to put anything into the g slot.
You should rewrite your function to do something appropriate when the user calls it with fewer parameters than the maximum. For example,
mytest(10,20)
Input P was: 10 Input Q was: 20
mytest(30)
Input P was: 30 Input Q was: -99
mytest()
Error using solution>mytest
You need to pass at least one parameter to this function!
function mytest(P,Q)
if nargin < 2; Q = -99; end
if nargin < 1
error('You need to pass at least one parameter to this function!');
end
fprintf('Input P was: %g\n', P);
fprintf('Input Q was: %g\n', Q);
end
This code illustrates that you can detect that trailing optional parameters have not been passed in, and in that case you can put in default values if appropriate -- but that when the user has not passed in enough parameters for minimal functionality, that you should generate a meaningful error message to inform the user of what is needed.

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