# Mode Function in MATLAB: Explained by Ivan

• MATLAB
• hoheiho
In summary, the mode function in MATLAB can be used to find the most frequently-occurring value and the number of times it appears in a matrix. It can be used by providing the matrix as input and it will return the mode value and its frequency. Alternatively, if the matrix needs to be converted into a single row or column vector, the reshape function can be used before applying the mode function. The online documentation provides useful examples for using the mode function in MATLAB.

#### hoheiho

Hi, I am a bit confusing on the mode function in MATLAB. I have look throught some books and say we can use mode function to find "the most show up value" and "show up how many times". For example :
r =

2 2 3
3 3 3
4 2 1

the most show up value is 3 and it shows up 4 times. The mode function will be mode(3,4)??How can i use it in .m file? Like i have "r" and now i want to use mode function to find the 3 and 4??Is there any example for that? coz lots of books just discrible what is mode function and didnt say how to use. Could anyone give me a hand on this?

Thanks
Ivan

In addition to what I said in your other thread, the online documentation has a great number of examples. For instance, for the mode command:
http://www.mathworks.com/help/techdoc/ref/mode.html

As per the link above, when you have a matrix, the mode command finds the most frequently-occurring (not 'showed-up') values in every column. If you wanted to find the most frequently-occurring value in the entire matrix, you need to turn the matrix into a single row or column vector using reshape:
http://www.mathworks.com/help/techdoc/ref/reshape.html

## 1. What is the mode function in MATLAB?

The mode function in MATLAB is used to find the most frequently occurring value in a set of data. It returns the value that appears the most number of times in the data.

## 2. How is the mode function used in MATLAB?

To use the mode function in MATLAB, you simply input the data as a vector or array and the function will return the mode value. You can also specify the dimension along which the mode is calculated.

## 3. What happens if there is more than one mode value in the data?

If there is more than one mode value in the data, the mode function in MATLAB will return all of the mode values in a vector.

## 4. Can the mode function be used with non-numerical data?

Yes, the mode function in MATLAB can be used with non-numerical data such as strings. It will return the mode value based on the alphabetical order of the strings.

## 5. Are there any limitations to using the mode function in MATLAB?

One limitation of the mode function in MATLAB is that it cannot handle missing or NaN values in the data. It will return an error if there are any missing values in the data.