I have i have a .dat file ... which consists of 213120 rows and 3 columns.... in this file 1st column is longitude, 2nd column is latitude that and 3rd collumn is data, Please find attacment below.

I want data between longitude 86 to 94 and latitude 21 to 29.

Answer 1

[Andrei Bobrov]

out = p(p(:,1) >= 86 & p(:,1) <= 94 & p(:,2) >= 21 & p(:,2) <= 29,:);