Hi Ravi,
To achieve this you can use the concept of slopes i.e. if the slope between (x1, y1) and (x2,y2), and between (x2,y2) and (x3,y3) are equal then points lie on a straight line.
Following is the implementation of above logic in MATLAB
function isCollinear = checkCollinearity(x1, y1, x2, y2, x3, y3)
% Calculate the "slope" conditions using cross multiplication in case
% to avoid division.
% (y2 - y1) * (x3 - x2) == (y3 - y2) * (x2 - x1)
% If the above condition is true, then the points are collinear.
isCollinear = (y2 - y1) * (x3 - x2) == (y3 - y2) * (x2 - x1);
end
Call the above functions with the co-ordinates as arguments
% Define the points
x1 = 1; y1 = 1;
x2 = 2; y2 = 2;
x3 = 3; y3 = 3;
% Check if the points are collinear
if checkCollinearity(x1, y1, x2, y2, x3, y3)
disp('The points fall on one straight line.');
else
disp('The points do not fall on one straight line.');
end
Hope it helps!
