Creating data set for location Problem

I want to create an array of 150*150. filled with randomly generated, 15 cells for Distribution center i(1 to 15) and 50 cells for customer j (1 to 50). Then i want to calculate euclidean distance for each customer from each distribution center. Is there any function for creating the mentioned array of 150*150. Any help will be appreciated as I am totally new to this MATLAB world. Thanks!!!

Answer 1

[Walter Roberson]

centers = -(1:15);    %flag them with negative
customers = 1:50;  %let them be positive
numzero = 150 * 150 - length(centers) - length(customers);   %# empty places
to_scramble = [centers, customers, zeros(1,numzero));
neworder = randperm(length(to_scramble));
scrambled = to_scramble(neworder);
filledmatrix = reshape(scrambled, [150, 150]);

If you really needed a built-in routine to do this, you could construct everything up to to_scramble and then use a routine from the stats toolbox to do sampling without replacement with to_scramble as the population space, and then you would reshape() that result. Hardly seems worthwhile, considering you could combine

scrambled = to_scramble(randperm(length(to_scramble)));

and not have the overhead of the stats routine.

[Varun Jain]

Thanks for the code sir!!

Any suggestion how to find euclidean distance between centers and each customer?

[Walter Roberson]

Give the coding a try and see what _you_ can do on your assignment.