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

how to check every single element in a matrix vector wise

  1. check if any of the value in column is greater then threshold( T1)
  2. then check all the previous values if any value other than the current value is also higher than (T1)
  3. 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

  1. For a 2×2 matrix the determinant is ad – bc.
  2. 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?


  1. 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.
  2. 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:

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