Table of Contents

## How do I see all the elements in an array in MATLAB?

how to check every single element in a matrix vector wise

- check if any of the value in column is greater then threshold( T1)
- then check all the previous values if any value other than the current value is also higher than (T1)
- then count the number of values including current value.

## How do you find the elements of a matrix in MATLAB?

For example, to access a single element of a matrix, specify the row number followed by the column number of the element. e is the element in the 3,2 position (third row, second column) of A . You can also reference multiple elements at a time by specifying their indices in a vector.

**How do you find the value of a matrix?**

The determinant is a special number that can be calculated from a matrix….Summary

- For a 2×2 matrix the determinant is ad – bc.
- For a 3×3 matrix multiply a by the determinant of the 2×2 matrix that is not in a’s row or column, likewise for b and c, but remember that b has a negative sign!

### How do you check if all elements in an array are zero in MATLAB?

Description

- If A is a vector, then all(A) returns logical 1 ( true ) if all the elements are nonzero and returns logical 0 ( false ) if one or more elements are zero.
- If A is a nonempty matrix, then all(A) treats the columns of A as vectors and returns a row vector of logical 1 s and 0 s.

### What does find function do in MATLAB?

find (MATLAB Functions) k = find(X) returns the indices of the array X that point to nonzero elements. If none is found, find returns an empty matrix. [i,j] = find(X) returns the row and column indices of the nonzero entries in the matrix X .

**How do you find the elements of an array?**

A number of elements present in the array can be found by calculating the length of the array….ALGORITHM:

- STEP 1: START.
- STEP 2: INITIALIZE arr[] = {1, 2, 3, 4, 5}
- STEP 3: length= sizeof(arr)/sizeof(arr[0])
- STEP 4: PRINT “Number of elements present in given array:” by assigning length.
- STEP 5: RETURN 0.
- STEP 6: END.

#### How do you select an element in a matrix?

Similar to vectors, you can use the square brackets [ ] to select one or multiple elements from a matrix. Whereas vectors have one dimension, matrices have two dimensions. You should therefore use a comma to separate the rows you want to select from the columns.

#### What is the value of i in matrix?

= 1

When referring to a specific value in a matrix, called an element, a variable with two subscripts is often used to denote each element based on its position in the matrix. For example, given ai,j, where i = 1 and j = 3, a1,3 is the value of the element in the first row and the third column of the given matrix.