how to create lat lon matrix in matlab

I want to create a latitude longitude 4*4 dimension matrix of temperature from dataset where temperature is in third column

30.45 70.34 20
30.95 71.23 23
31.34 72.34 25
33.23 76.34 30

Can anybody help me how to create it?

[Stephen23]

 mat = [...
 30.45 70.34
  30.95 71.23
  31.34 72.34
  33.23 76.34];

[Tanmoyee Bhattacharya]

Thank you sir for your reply.If I have a format like this

30.45 70.34 20
30.95 71.23 23
31.34 72.34 25
33.23 76.34 30

And I want to arrange the third column in 4*4 dimension lat lon format waht change I have to do?

[KL]

What do you mean by ...I want to arrange the third column in 4*4 dimension ...?

You only have three columns. Show us how do you expect the output to look like?

[Stephen23]

@Tanmoyee Bhattacharya: the third column has four elements. How do you want to allocate those four elements to the sixteen elements of a 4x4 matrix?

[Tanmoyee Bhattacharya]

Sir, Actually I have solved it.I arrange longitude according to latitude and by xyz2grd fuction I have created a matrix.

[KSSV]

Tanmoyee you are missing logic some where......what exactly you want to do?

[Tanmoyee Bhattacharya]

Sir I arrange data set like

if true
  % code
end
30.45 78.34 34
30.45 76.34 23
30.45 75.23 25 
30.45 76.45 26
...........
.........
31.45 78.34 34
31.45 76.34 24 
31.45 75.23 23
31.45 76.45 23
Then I create the matrix by function xyz2grd. 
It is solved sir.