Not enough input arguments matlab ошибка

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Hi, I’m very new to MATLAB and I am having some trouble. Lots of people have had the same problem but nobody seems to be able to explain or solve it in plain English. Could somebody please explain what this error is and how to fix it?

I have a simple function:

function [r]=Mec134function(w,theta_deg)

t2=10000;

theta_rad=(theta_deg./180).*pi;

t1=55090./(10*sin(theta_rad));

rx=(t1.*cos(theta_rad))-t2;

ry=w-(t1.*sin(theta_rad));

r=((rx).^2+(ry).^2).^0.5;

end

It seems to give this error for line 3 but I’m not sure why.

Thanks.

Accepted Answer

Your function defines 2 input arguments (w and theta_deg). When you run Mec134function, you must specify exactly two inputs, otherwise you will get the error «Not enough input arguments».

For example, if you run the Mec134function in the command window without specifying any arguments:

You get this error:

Not enough input arguments.

Error in Mec134function (line 3)

theta_rad=(theta_deg./180).*pi;

If you run the Mec134function and specify two input arguments, «w» and «theta_deg» (assuming «w» and «theta_deg» are defined), you do not get the error message:

>> Mec134function(w,theta_deg)

If you have the file «Mec134function.m» open in the Editor and you try to run the function by pressing the «Run» button or F5, MATLAB runs the Mec134function without any input arguments, and you get the error «Not enough input arguments». The «Run» button dropdown menu then opens prompting you to enter values for the missing input arguments.

Add the desired values and press enter. The values you enter are set as the default inputs when you click the «Run» button or F5 in the future.

To change the values, press the down arrow below the «Run» button and enter new values.

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Источник

Introduction to Matlab not enough input arguments

Matlab provides the different functions to the user, in which that user can perform the different operations as per their requirement. We write the script or function in Matlab that takes in no input argument, and we try to run that script or function. At that time, Matlab showed an error message that there was not enough input argument because the function required the input argument that we write the script or function, and inside that function, we passed two matrices together. So this is not a valid way to write the script or function; in this case, we need to write a separate function or script. In this topic, we are going to learn about Matlab, not enough input arguments.

Syntax

specified function name sample = add (argument name 1, argument name 2) sample = argument name 1+ argument name 2; end

Explanation

In the above syntax, we use different parameters as follows.

specified function name: It is used to specify the function name with argument.

add: add is a function, and it is used to make the addition of two arguments that we pass inside the function.

In the above syntax, we created a function with a name sample, and we made the addition of two matrices that are argument name 1 and argument name 2, as shown in the above syntax.

How to solve Matlab’s not enough input arguments problem?

Now let’s see how to solve the not enough input argument problem in Matlab as follows.

Basically, there are two ways to solve this problem as follows.

1 By using the Command Prompt:

This is a very simple method to solve the not enough input argument error. In this method, we simply create the input whatever we require on the command prompt, and after that, we need to execute that input by using the function or script that we already write.

2 By using Matlab Editor:

Under the Run button, there is a dark arrow. In the event that you click on that arrow button, you can determine the variable you might want to get from the MATLAB workspace by composing the manner in which you need to call the capacity precisely, as you have found in technique 1. But, first, be certain that the variable you are indicating inside the function must exist in the MATLAB workspace.

Examples of Matlab not enough input arguments

Now let’s see the different examples of not enough input arguments in Matlab to better understand this problem as follows.

First, see how not enough input argument error occurs by using the following example as follows.

function Z = add(X, Y) Z = X + Y; end

Explanation

In the above example, we created a simple function, in which we write the function definition for addition. Here we pass the two arguments X and Y as shown in the above function, but it shows the error message like not enough input argument error because here we try to make the addition of two matrices, and this is not possible by using the above syntax. The final output of this program we illustrated by using the following screenshot as follows.

Now let’s see how we can avoid this error by using different methods as follows.

The simplest way is to pass the input argument in the command prompt, and after that, we need to run a function with new values. So let’s see the example of this type as follows.

Write the following code in the command prompt as follows.

X = rand (4, 4) Y = rand (4, 4) Z = add (4, 4)

Explanation

In the above code, we use rand () to print the 4 by 4 arrays, and after that, we make the addition of X and Y arrays as shown in the above code. So in this way, we can avoid the not enough input argument error. The final output of this program we illustrated by using the following screenshot as follows.

Now let’s see another way to avoid this error as follows.

In the second method, we need to click on the Run button, open the dropdown menu, and write down the input argument name that we need to run but be assured that the argument name must be present in the function. Let’s see some screenshots of this method as follows.

In the above screen, we show the dropdown menu and write here the input argument that we need to execute. In this example, we pass X = rand (4,4) as shown in the below screenshot as follows.

After execution, the final result is shown below screenshot as follows.

How to avoid Matlab’s not enough input arguments problem?

Now let’s see how we can avoid not enough input argument problems in Matlab as follows.

First thing when we open a Matlab file in the editor, and we try to run that file, or we can say that function by using the Run button. At that time, Matlab runs that function without any argument; then, we will get an error message, not enough input argument. At that the same time drop-down menu is open through the Run button and enters the values for the missing argument for the function. So add different values as per our requirement, hit the enter now entered values map with the function, and click on the Run button. So in this way, we can avoid the not enough input argument problem.

Another way to avoid not enough input argument problems is that, suppose we created one function that is fun () and inside that we pass two arguments that A and B. At the same time, if we need to provide some more input arguments at that time, we need to use an anonymous function.

Now we have one more way to avoid the not enough input argument problem. We use the command line option when we execute the function at that same time; we need to pass the input argument for that function. By using this method, we can easily avoid this problem.

Conclusion

We hope from this article you learn Matlab, not enough input argument. From the above article, we have learned the basic syntax of not enough input argument, and we also see different examples of not enough input argument. From this article, we learned how and when we use Matlab not enough input argument.

Example

Often beginning MATLAB developers will use MATLAB’s editor to write and edit code, in particular custom functions with inputs and outputs. There is a Run button at the top that is available in recent versions of MATLAB:

Once the developer finishes with the code, they are often tempted to push the Run button. For some functions this will work fine, but for others they will receive a Not enough input arguments error and be puzzled about why the error occurs.

The reason why this error may not happen is because you wrote a MATLAB script or a function that takes in no input arguments. Using the Run button will run a test script or run a function assuming no input arguments. If your function requires input arguments, the Not enough input arguments error will occur as you have written a functions that expects inputs to go inside the function. Therefore, you cannot expect the function to run by simply pushing the Run button.

To demonstrate this issue, suppose we have a function mult that simply multiplies two matrices together:

function C = mult(A, B)
    C = A * B;
end

In recent versions of MATLAB, if you wrote this function and pushed the Run button, it will give you the error we expect:

>> mult
Not enough input arguments.

Error in mult (line 2)
    C = A * B;

There are two ways to resolve this issue:

Method #1 — Through the Command Prompt

Simply create the inputs you need in the Command Prompt, then run the function using those inputs you have created:

A = rand(5,5);
B = rand(5,5);
C = mult(A,B);

Method #2 — Interactively through the Editor

Underneath the Run button, there is a dark black arrow. If you click on that arrow, you can specify the variables you would like to get from the MATLAB workspace by typing the way you want to call the function exactly as how you have seen in method #1. Be sure that the variables you are specifying inside the function exist in the MATLAB workspace:

Источник

Проверьте количество входных параметров

nargchk не рекомендуется. Использование narginchk вместо этого.

Синтаксис

Описание

пример

msgText = nargchk(minArgs,maxArgs,numArgs) проверяет количество входных параметров и возвращает сообщение если количество входных параметров, numArgs, меньше, чем minArgs или больше, чем maxArgs.

Этот синтаксис совпадает с msgText = nargchk(minArgs,maxArgs,numArgs,'string').

пример

msgStruct = nargchk(minArgs,maxArgs,numArgs,'struct') возвращает структуру сообщения вместо вектора символов.

Примеры

свернуть все

Контрольное число входных параметров функции

В файле с именем checkInputs, создайте функцию, которая использует nargchk проверять, что функция была вызвана с верным номером входных параметров.

function checkInputs(varargin)
    msgTxt = nargchk(2,3,nargin)
end

Вызовите checkInputs функция с верным номером входных параметров. nargchk возвращает пустой символьный вектор.

Вызовите checkInputs функция с очень небольшим числом входных параметров.

msgTxt =

    'Not enough input arguments.'

Вызовите checkInputs функция со слишком многими входными параметрами.

msgTxt =

    'Too many input arguments.'

Передайте `nargchk` Структура output к `error` Функция

В файле с именем checkInputs, создайте функцию, которая использует nargchk с 'struct' параметр, чтобы проверить, что функция была вызвана с верным номером входных параметров.

function checkInputs(varargin)
    msgStruct = nargchk(2,3,nargin,'struct');
    error(msgStruct)
end

В командной строке вызовите checkInputs функция с принятым количеством входных параметров. nargchk не выдает ошибку.

Вызовите checkInputs функция с очень небольшим числом входных параметров.

Error using checkInputs (line 3)
Not enough input arguments.

Вызовите checkInputs функция со слишком многими входными параметрами.

Error using checkInputs (line 3)
Too many input arguments.

Входные параметры

свернуть все

`minArgs` — Минимальное количество принятых входных параметров
скаляр

Минимальное количество принятых входных параметров в виде скаляра.

`maxArgs` — Максимальное количество принятых входных параметров
скаляр

Максимальное количество принятых входных параметров в виде скаляра.

`numArgs` — Количество входных параметров функции
скаляр

Количество входных параметров функции в виде скаляра. Как правило, вы используете nargin функция, чтобы определить количество входных параметров, заданных в вызове функции.

Выходные аргументы

свернуть все

`msgText` — Текст сообщения
`'Not enough input arguments.'` | `'Too many input arguments.'` | пустая матрица

Текст сообщения, возвращенный как 'Not enough input arguments.', 'Too many input arguments.', или пустая матрица.

Если numArgs меньше minArgsто nargchk возвращает вектор символов 'Not enough input arguments.' Если numArgs больше maxArgsто nargchk возвращает вектор символов 'Too many input arguments.' В противном случае, nargchk возвращает пустую матрицу.

`msgStruct` — Сообщение и идентификатор
структура

Сообщение и идентификатор, возвращенный как структура с message и identifier поля . Если numArgs меньше minArgsто nargchk возвращает эту структуру:

       message: 'Not enough input arguments.'
    identifier: 'MATLAB:nargchk:notEnoughInputs'

Если numArgs больше maxArgsто nargchk возвращает эту структуру:

       message: 'Too many input arguments.'
    identifier: 'MATLAB:nargchk:tooManyInputs'

В противном случае, nargchk возвращает пустую структуру.

Советы

nargchk часто используется с error функция. error функция принимает любой тип возвращаемого значения от nargchk: вектор символов сообщения или структура сообщения. Например, эта команда использует структуру выходного сигнала от nargchk как вход к error функция.
```
error(nargchk(2,4,nargin,'struct'))
```
Если количество входных параметров в ожидаемой области значений, то nargchk возвращает пустой символьный вектор или структуру. Когда error функция получает пустой символьный вектор или структуру, она не выдает ошибку.

Представлено до R2006a

Источник

It is a function (not an script) and it needs some input arguments to run (in this case A and x), so you cannot hit the run button and expect it to run.

The first way:

Instead you can use the command windows in MATLAB and enter the command:

A = rand(3,3); % define A here
x = ones(3,1); % define x here
test(A,x) % then run the function with its arguments

remember that A and x should be defined properly.

The second way is:

Also you can hit the little triangle besides the green run button (see the figure below), and it will show you another option, type command to run. And
there you can directly enter the same command test(A,x). After that, each time you just hit enter for this function and it runs this command instead of only the test command without any argument.

enter

The third way:

function y = test(A, x)
%// TESTING CODE:
if nargin==0
    A = default_value_for_A;
    x = default_value_for_x;
end
... %// rest of the function code

This way allows you to click the play button and have your function run with no explicit input arguments. However, be advised that such a method should only be used:

When debugging, so as not to allow users to call the function with no arguments if this is not its intended use case.
If your function is not supposed to behave differently for a different number of inputs. See also function overloading in MATLAB based on number of input arguments.

MATLAB not enough input arguments

the reason why you get this error is because you run your code from this function script.
but you must run your code from your main script (the file that you invoke or use this function in it).

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Источник

SNOP.

Re: Матлаб, решение системы линейных диффуров

10.05.2016, 19:03

26/04/16
11

У меня все работает.

global T E U11 U22 U21 U12 G T0 X0 A
T = 1
E = 2
U11 = 3
U22 = 4
U12 = 5
U21 = 6
G = 7
T0 = [0 1]
X0=[1;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0];
A = [0*1i, 0, T, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, —2*G*1i, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
T, -T, -E-G*1i, 0, 0, 0, 0, 0, 0, 0, 0, 0, U21-U11, 0, 0, 0, 0, 0, 0, 0, 0, 0, U22-U12, 0, 0, 0, 0, 0, 0, 0, 0, 0
-T, T, 0, E-G*1i, 0, 0, 0, 0, 0, U11-U21, 0, 0, 0, 0, 0, 0, 0, 0, 0, U21-U22, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0*1i, 0, 0, 0, 0, 0, T, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, —2*G*1i, -T, T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, T, -T, -E-G*1i, 0, 0, 0, U22-U12, 0, 0, 0, 0, U21-U11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, -T, T, 0, E-G*1i, 0, 0, 0, 0, 0, 0, 0, 0, U12-U22, 0, 0, 0, 0, U21-U11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, —2*G*1i, T, T, 0, -T, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, T, E+U11-U21-G*1i, 0, T, 0, -T, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, U12-U22, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, T, 0, U22-U12-3*G*1i-E, T, 0, 0, -T, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, 0, 0, U21-U22, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, T, T, —2*G*1i, 0, 0, 0, -T, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, U21-E-U11-G*1i, T, T, 0, 0, 0, 0, 0, -T, 0, 0, 0, 0, 0, U12-U22, 0, 0, 0, 0, 0
0*1i, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, T, 0, 0, T, 0, 0, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, T, 0, —2*G*1i, T, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, T, T U21-U11-E-G*1i, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, U22-U12, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, 0, E+U12-U22-3*G*1i, T, T, 0, -T, 0, 0, 0, 0, U11-U21, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, T, 2*(E+U11-U21-G*1i), 0, T, 0, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, 0, 0, T, 0, —4*G*1i, T, 0, 0, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, 0, 0, T, T, E+U12-U22-3*G*1i, 0, 0, 0, -T, U11-U21, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, -T, 0, 0, 0, —2*G*1i, T, T, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, -T, 0, 0, T E+U11-U21-G*1i, 0, T, 0, U12-U22, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, -T, 0, T, 0, -E+U22-U12-3*G*1i, 0, 0, 0, U21-U11, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, -T, 0, T, T, —2*G*1i, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, E+U11+U12-U21-U22-3*G*1i, 0, 0, 0, 0, 0, -T, T
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, E+U11+U12-U21-U22-3*G*1i, 0, 0, -T, T, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, T+U21+U12-E-U11-U22-3*G*1i, 0, 0, 0, T, -T
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, U11+U22-U12-U21-E-3*G*1i, T, -T, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, T, —2*G*1i, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, T, 0, -T, 0, —4*G*1i, 0, 0
0*1i, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, T, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, T, 0, -T, 0, 0, 0, 0, —4*G*1i];

function dX=func1(t, X)
global T E U11 U22 U21 U12 G T0 X0 A
dX=A*X;
end

ode45(@func1, T0, X0)

Да, заработало, возможно end не хватало. А не подскажете, как теперь построить только X(1)? Писать отдельную m-функцию или можно сразу после ode писать?

— 10.05.2016, 19:15 —

Решил разделить на две части:
Функцию:

function dX=func2(t, X)
global T E U11 U22 U21 U12 G T0 X0 A
dX=A*X;
end

И Решение как-то так:

T=1; E=0.21; U11=0;U21=0;U12=0;U22=0; G=0.001; T0=[0,1];
X0=[1;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0];
A = [0*1i, 0, T, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, —2*G*1i, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
T, -T, -E-G*1i, 0, 0, 0, 0, 0, 0, 0, 0, 0, U21-U11, 0, 0, 0, 0, 0, 0, 0, 0, 0, U22-U12, 0, 0, 0, 0, 0, 0, 0, 0, 0
-T, T, 0, E-G*1i, 0, 0, 0, 0, 0, U11-U21, 0, 0, 0, 0, 0, 0, 0, 0, 0, U21-U22, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0*1i, 0, 0, 0, 0, 0, T, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, —2*G*1i, -T, T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, T, -T, -E-G*1i, 0, 0, 0, U22-U12, 0, 0, 0, 0, U21-U11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, -T, T, 0, E-G*1i, 0, 0, 0, 0, 0, 0, 0, 0, U12-U22, 0, 0, 0, 0, U21-U11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, —2*G*1i, T, T, 0, -T, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, T, E+U11-U21-G*1i, 0, T, 0, -T, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, U12-U22, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, T, 0, U22-U12-3*G*1i-E, T, 0, 0, -T, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, 0, 0, U21-U22, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, T, T, —2*G*1i, 0, 0, 0, -T, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, U21-E-U11-G*1i, T, T, 0, 0, 0, 0, 0, -T, 0, 0, 0, 0, 0, U12-U22, 0, 0, 0, 0, 0
0*1i, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, T, 0, 0, T, 0, 0, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, T, 0, —2*G*1i, T, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, T, T U21-U11-E-G*1i, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, U22-U12, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, 0, E+U12-U22-3*G*1i, T, T, 0, -T, 0, 0, 0, 0, U11-U21, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, 0, 0, 0, T, 2*(E+U11-U21-G*1i), 0, T, 0, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, 0, 0, T, 0, —4*G*1i, T, 0, 0, -T, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, 0, 0, T, T, E+U12-U22-3*G*1i, 0, 0, 0, -T, U11-U21, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, -T, 0, 0, 0, —2*G*1i, T, T, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, -T, 0, 0, T E+U11-U21-G*1i, 0, T, 0, U12-U22, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, -T, 0, T, 0, -E+U22-U12-3*G*1i, 0, 0, 0, U21-U11, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, 0, 0, -T, 0, T, T, —2*G*1i, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, E+U11+U12-U21-U22-3*G*1i, 0, 0, 0, 0, 0, -T, T
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, E+U11+U12-U21-U22-3*G*1i, 0, 0, -T, T, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, T+U21+U12-E-U11-U22-3*G*1i, 0, 0, 0, T, -T
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, U11+U22-U12-U21-E-3*G*1i, T, -T, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, T, —2*G*1i, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, T, 0, -T, 0, —4*G*1i, 0, 0
0*1i, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -T, 0, T, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, T, 0, -T, 0, 0, 0, 0, —4*G*1i];

ode45(@func2, T0, X0);
plot(T,X(:,1),‘x’);
grid on
xlabel(‘t’);

В результате получаю:
Error using odeplot (line 63)
Error updating the ODEPLOT window. Solution data may have been corrupted. Argument Y cannot be complex.

Error in ode45 (line 435)
stop = feval(outputFcn,tout_new,yout_new(outputs,:),»,outputArgs{:});

Error in reshenie (line 36)
ode45(@func2, T0, X0);
Что за хрень?

— 10.05.2016, 19:20 —

Можно ли сделать так, чтобы строилась только действительная часть, то есть чтобы он считал все полностью, но строил только действительную часть?

Источник

Accepted Answer

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Community Treasure Hunt

Introduction to Matlab not enough input arguments

How to solve Matlab’s not enough input arguments problem?

1 By using the Command Prompt:

2 By using Matlab Editor:

Examples of Matlab not enough input arguments

How to avoid Matlab’s not enough input arguments problem?

Conclusion

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Example

Method #1 — Through the Command Prompt

Method #2 — Interactively through the Editor

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Описание

Примеры

Контрольное число входных параметров функции

Передайте `nargchk` Структура output к `error` Функция

Входные параметры

`minArgs` — Минимальное количество принятых входных параметров
скаляр

`maxArgs` — Максимальное количество принятых входных параметров
скаляр

`numArgs` — Количество входных параметров функции
скаляр

Выходные аргументы

`msgText` — Текст сообщения
`'Not enough input arguments.'` | `'Too many input arguments.'` | пустая матрица

`msgStruct` — Сообщение и идентификатор
структура

Советы

The first way:

The second way is:

The third way:

MATLAB not enough input arguments

Читайте также:

Accepted Answer

More Answers (18)

See Also

Categories

Community Treasure Hunt

Introduction to Matlab not enough input arguments

How to solve Matlab’s not enough input arguments problem?

1 By using the Command Prompt:

2 By using Matlab Editor:

Examples of Matlab not enough input arguments

How to avoid Matlab’s not enough input arguments problem?

Conclusion

Recommended Articles

Example

Method #1 — Through the Command Prompt

Method #2 — Interactively through the Editor

Синтаксис

Описание

Примеры

Контрольное число входных параметров функции

Передайте nargchk Структура output к error Функция

Входные параметры

minArgs — Минимальное количество принятых входных параметров скаляр

maxArgs — Максимальное количество принятых входных параметров скаляр

numArgs — Количество входных параметров функции скаляр

Выходные аргументы

msgText — Текст сообщения 'Not enough input arguments.' | 'Too many input arguments.' | пустая матрица

msgStruct — Сообщение и идентификатор структура

Советы

The first way:

The second way is:

The third way:

MATLAB not enough input arguments

Читайте также:

Передайте `nargchk` Структура output к `error` Функция

`minArgs` — Минимальное количество принятых входных параметров
скаляр

`maxArgs` — Максимальное количество принятых входных параметров
скаляр

`numArgs` — Количество входных параметров функции
скаляр

`msgText` — Текст сообщения
`'Not enough input arguments.'` | `'Too many input arguments.'` | пустая матрица

`msgStruct` — Сообщение и идентификатор
структура