Suggest a data structure to represent a set of geographical points

I have a geographical data (latitude $ longitude ) of the areas of my interest . I need a data structure to represent these points. The ultimate aim is to determine if a given point lies within the specified region. ThankYou.

Answer 1

[Carlos]

Try using multidimensional arrays. The idea is that the "third dimension" represents the index of your bidimensional latitude-longitude vector.

For example

>> A = [100;90];

>> A(:,:,2)=[100;120];

>> A

A(:,:,1) =

   100
    90

A(:,:,2) =

   100
   120

As you can see you have two bidimensional vectors representing latitude and longitude, within a 3 dimensional vector.

You can find more information on multidimensional vectors here:http://www.mathworks.es/products/matlab/examples.html?file=/products/demos/shipping/matlab/nddemo.html