how to find matching elements of two colums vectors

if i have a two column vectors generated from a figure like from apple. how can i combine them the matching elements using matlab. plz guide me

Answer 1

[M]

It depends what you want exactly.

Let's say you have two vectors a and b:

a=[1;2;3;4];
b=[0;2;3;5];

To find the indices where a equals to b, you can simply compute:

a == b
ans =

  4×1 logical array

   0
   1
   1
   0

To get the values and the indices where a equals to b, you can also have a look at the find function.

[M.S. Khan]

Thanks for community support. let me phrase my questions with more detail

lets suppose i have vertices of a tea cup.

Vx =[ 0;1;2;0;9]

Vy = [1;1;,2;;3]

Vz= = [38,32,-1]

They are cancatenated in a larger matrix = [Vx Vy Vz].

After sorting, i want to find first elements or coordinates like (0,1,38) here in Vx,Vy,Vz wherever they meet or match, it should be labelled as 5 in that particular grid.

Your guidance will be highly appreciated.

regards