how can i implement knn algorithm without using matlab built in knnsearch etc

I have a data in struct form.

X         1x1             22528528  struct              
y         1x1                88528  struct

X.devel 256*4000
X.test 256*2000
X.train 256*5000

how can I convert struct into double and then how implent knn on it

Answer 1

[Walter Roberson]

result = YourKNNFunction(X.devel)

where YourKNNFunction is a function you write. (One presumes that if you know you need to use KNN then you have an article describing what KNN is intended to do.)

[maryam]

I need to know will I use X.train with y.train and X.devel with Y.devel and so on

[Walter Roberson]

Yes.