# How do you do a Cartesian product in MATLAB?

## How do you do a Cartesian product in MATLAB?

X = CARTPROD(A,B,C,…) returns the cartesian product of the sets A,B,C, etc, where A,B,C, are numerical vectors.

What is the difference between * and * in MATLAB?

* is matrix multiplication while . * is elementwise multiplication. In order to use the first operator, the operands should obey matrix multiplication rules in terms of size. Show activity on this post.

What does pdist2 do in MATLAB?

CodeConfig (MATLAB Coder). Starting in R2020a, pdist2 returns integer-type ( int32 ) indices, rather than double-precision indices, in generated standalone C/C++ code. Therefore, the function allows for strict single-precision support when you use single-precision inputs.

### Why do we use * in MATLAB?

MATLAB matches all characters in the name exactly except for the wildcard character * , which can match any one or more characters.

How do you find the magnitude of a vector in Matlab?

MATLAB – Magnitude of a Vector

1. Take the product of the vector with itself, using array multiplication (. *).
2. Use the sum function to get the sum of squares of elements of vector v.
3. Use the sqrt function to get the square root of the sum which is also the magnitude of the vector v.

How do you find magnitude in Matlab?

Y = abs( X ) returns the absolute value of each element in array X . If X is complex, abs(X) returns the complex magnitude.

## What does == mean in MATLAB?

Description. example. A == B returns a logical array with elements set to logical 1 ( true ) where arrays A and B are equal; otherwise, the element is logical 0 ( false ).

What does a * b mean in MATLAB?

Description. example. C = A . * B multiplies arrays A and B by multiplying corresponding elements. The sizes of A and B must be the same or be compatible.

Is Hamming distance a metric?

The Hamming distance is a metric (in the mathematical sense) used in error correction theory to measure the distance between two codewords. In detail, the Hamming distance measures the number of different bits in two strings of the same length.

### What does Dist mean in Matlab?

dist is also a layer distance function which can be used to find the distances between neurons in a layer. D = dist( pos ) takes N -by- S matrix of neuron positions, pos and returns the S -by- S matrix of distances, D .

What is a * b in MATLAB?

Is there a magnitude function in Matlab?

MATLAB provides us with ‘norm’ and ‘abs’ function to compute the magnitude of vectors, array of vectors, or complex numbers.

## How do you find the magnitude of a matrix in Matlab?

1. magnitude calculation procedure is r = [x y z]
2. rmag = (x^2 + y^2 + z^2)^0.5.
3. so in matlab rmag =sqrt(sum(r.^2))

How do you find magnitude of data?

Magnitude is another name for “size”. You can easily figure out the magnitude of any number by removing the negative sign (giving you the absolute value). For example, the absolute value of -100 is 100, which is also the magnitude.

How do I find the magnitude of a matrix?

You can measure the “magnitudes” of matrices by using matrix norms. If you stack up the columns of an n×n matrix A successively with the first column on top, you get a long vector v in Rn2. The Euclidean norm of this vector (i.e. ‖v‖2) is called the Frobenius norm of the matrix and it is denoted by ‖A‖F.

### What does 3 dots mean in MATLAB?

The three dots ‘…’ tell matlab that the code on a given line continues on the next line. It is used so that command lines don’t stretch out too long to print or read easily.

What is meaning of * in MATLAB?

* is matrix multiplication, . * is array multiplication (i.e. element-wise).

What does Linsolve mean in MATLAB?

X = linsolve( A , B ) solves the matrix equation AX = B, where B is a column vector. example. [ X , R ] = linsolve( A , B ) also returns the reciprocal of the condition number of A if A is a square matrix. Otherwise, linsolve returns the rank of A .

## What are distance metrics?

Distance metrics are a key part of several machine learning algorithms. These distance metrics are used in both supervised and unsupervised learning, generally to calculate the similarity between data points.

Which distance metric is best?

This means that the L1 distance metric (Manhattan Distance metric) is the most preferable for high dimensional applications.” Thus, Manhattan Distance is preferred over the Euclidean distance metric as the dimension of the data increases. This occurs due to something known as the ‘curse of dimensionality’.

What does Unifrnd do in MATLAB?

Description. r = unifrnd( a , b ) generates a random number from the continuous uniform distribution with the lower endpoints a and upper endpoint b . r = unifrnd( a , b , sz1,…,szN ) generates an array of uniform random numbers, where sz1,…,szN indicates the size of each dimension.

### How do I test for normal distribution in MATLAB?

h = kstest( x ) returns a test decision for the null hypothesis that the data in vector x comes from a standard normal distribution, against the alternative that it does not come from such a distribution, using the one-sample Kolmogorov-Smirnov test.

How do you multiply a matrix by a scalar in MATLAB?

Multiplication of a matrix by a scalar is also defined elementwise, just as for vectors. Create a 3 by 2 matrix A, the calculate B = -2A and C = 2A + B. A is a 3 by 2 matrix. B is a 3 by 2 matrix with each element equal to -2 times the corresponding element of A.

How do you code magnitude in MATLAB?