## What is padarray in matlab?

B = padarray( A , padsize ) pads array A with an amount of padding in each dimension specified by padsize . The padarray function pads numeric or logical images with the value 0 and categorical images with the category .

### What is padding array?

The array padding transformation sets a dimension in an array to a new size. The goal of this transformation is to reduce the number of memory system conflicts. The transformation is applied to a full function AST. The new size can be specified by the user or can be computed automatically.

#### How do you use zeros in Matlab?

X = zeros( sz ) returns an array of zeros where size vector sz defines size(X) . For example, zeros([2 3]) returns a 2-by-3 matrix. X = zeros(___, typename ) returns an array of zeros of data type typename . For example, zeros(‘int8’) returns a scalar, 8-bit integer 0 .

**What is symmetric padding?**

symmetric padding: Input array values outside the bounds of the array are computed by mirror-reflecting the array across the array border. replicate padding: Input array values outside the bounds of the array are assumed to equal the nearest array border value.

**What is NumPy Nan?**

In Python, NumPy NAN stands for not a number and is defined as a substitute for declaring value which are numerical values that are missing values in an array as NumPy is used to deal with arrays in Python and this can be initialized using numpy.

## What is PAD Python?

pad() function is used to pad the Numpy arrays. Sometimes there is a need to perform padding in Numpy arrays, then numPy. pad() function is used. The function returns the padded array of rank equal to the given array and the shape will increase according to pad_width.

### What does zero () mean in Matlab?

The Matlab inbuilt method zeros() creates array containing all element as zero or empty value. This function allows user an empty array having a bunch of zeros in it. The Matlab programming language does not contain any dimension statement. In Matlab, storage allocation for matrices happens automatically.

#### Why we use ones in Matlab?

X = ones( sz ) returns an array of ones where the size vector, sz , defines size(X) . For example, ones([2,3]) returns a 2-by-3 array of ones. X = ones(___, typename ) also specifies the data type (class) of X for any of the previous syntaxes. For example, ones(5,’int8′) returns a 5-by-5 matrix of 8-bit integers.

**How do you count the number of elements in an array?**

Algorithm

- Declare and initialize an array arr.
- Declare another array fr with the same size of array arr.
- Variable visited will be initialized with the value -1.
- The frequency of an element can be counted using two loops.
- Initialize count to 1 in the first loop to maintain a count of each element.