Why Does My Matlab Function Say Input Argument 'u' is Undefined?

In summary, Matlab is a high-level programming language and interactive environment commonly used in scientific and engineering applications. It is important for beginners to learn because of its widespread use and user-friendly interface. Some common challenges for beginners include understanding syntax and troubleshooting errors, but they can improve their skills by practicing, reviewing documentation, and seeking help from others. Useful tips for struggling beginners include breaking down problems, using the help function, and utilizing debugging tools. While there are differences between Matlab and other programming languages, it is not necessary to learn other languages, but it can be beneficial in expanding one's skills.
  • #1
shaqdiesel
1
0
need urgent help

I'm a beginner using matlab, I saw this function working:

function une=coloca(u)
num=1:256;
val=288-(u*3000);
une(1,:)=val;
une(2,:)=num;

but when I try to use it, this error appears:

? Input argument "u" is undefined.

Error in ==> une at 3
val=288-(u*3000);

What could be the problem? Could someone help me ?
 
Last edited:
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  • #2


How do you call the function?
 
  • #3


Hello, it seems like the variable "u" is not defined in your code. Make sure you have assigned a value to "u" before using it in the function. Also, check if the input arguments in your function match the ones you are providing when calling the function. If you are still having trouble, it might be helpful to provide more context and information about your code and what you are trying to achieve. You can also refer to the Matlab documentation or seek help from online forums or communities for further assistance. Good luck!
 

What is Matlab and why is it important for beginners to learn?

Matlab is a high-level programming language and interactive environment commonly used in scientific and engineering applications. It is important for beginners to learn because it is widely used in academia and industry, and it has a user-friendly interface and powerful tools for data analysis and visualization.

What are some common challenges beginners face when learning Matlab?

Some common challenges beginners face when learning Matlab include understanding the syntax and structure of the language, navigating the user interface, and troubleshooting errors in their code.

How can beginners improve their skills in Matlab?

To improve their skills in Matlab, beginners can practice regularly, review documentation and tutorials, and seek help from experienced users or online communities. They can also take online courses or attend workshops to learn more advanced techniques.

What are some useful tips for beginners struggling with Matlab?

Some useful tips for beginners struggling with Matlab include breaking down complex problems into smaller parts, using the built-in help function to understand different functions and commands, and utilizing the debugging tools to identify and fix errors in their code.

Is there a difference between Matlab and other programming languages, and is it necessary to learn other languages?

Yes, there are differences between Matlab and other programming languages, such as its focus on numerical computing and its use of matrix operations. While it is not necessary to learn other languages, having knowledge of other languages can be beneficial in expanding one's skillset and problem-solving abilities.

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