You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: initialize_robot_positions.m
    path of file: ./repos/robotarium-rendezvous-RSSDOA/includes
    
    the code of the file until where you have to start completion: function r = initialize_robot_positions(r,N,initial_positions)
%This function initializes the robots to the fixed initial positions in the Robotarium environment
%Author: Ramviyas Parasuraman, ramviyas@purdue.edu

%% Using Robotarium utility functions for dynamics transformations and position controller
si_pos_controller = create_si_position_controller('XVelocityGain', 2, 'YVelocityGain', 2);
si_to_uni_dyn = create_si_to_uni_mapping2('LinearVelocityGain', 2, 'AngularVelocityLimit', pi);

%% Initialization 
threshold = 0.01; % distance threshold (in meters) within which the robots should be positioned

    
function r = initialize_robot_positions(r,N,initial_positions)
%This function initializes the robots to the fixed initial positions in the Robotarium environment
%Author: Ramviyas Parasuraman, ramviyas@purdue.edu

%% Using Robotarium utility functions for dynamics transformations and position controller
si_pos_controller = create_si_position_controller('XVelocityGain', 2, 'YVelocityGain', 2);
si_to_uni_dyn = create_si_to_uni_mapping2('LinearVelocityGain', 2, 'AngularVelocityLimit', pi);

%% Initialization 
threshold = 0.01; % distance threshold (in meters) within which the robots should be positioned
K = length(initial_positions); % Number of assigned position coordinates (input)
% Check if the size of initial positions are same as the number of robots
if(K < N)
    disp('The number of given position coordinates (K) are not same as the total number of robots (N), therefor will move only the first K number of robots as per the inputs');
end