P-norm (2-norm is Euclidean norm)

p- Norm definition

common 1- norm 、2- norm （ Euclid Norm ）

vecnorm and norm

vecnorm

application

Calculate the European distance. Don't recite the distance formula between two points foolishly , Directly a two norm is done
such as ,A=[1 1 ; 2 2 ; 3 3] It is a matrix with three rows and two columns , Lines represent points , Column means X and Y coordinate , Empathy ,B=[5 5 ; 6 6 ; 7 7].

Then calculate A and B Euclidean distance corresponding to three points , It can be used directly vecnorm$(A-B,2,2)$

No, no, No ,2016 Version cannot be used vecnorm

norm

norm For the parameter is vector Time and vecnorm equally
Calculating the Euclidean distance between two points can also
For matrix 2- norm No OK 了

norm Normalized matrix

for j=1:n
    b(:,j)=a(:,j)/norm(a(:,j));  % Vector programming 
end