Hi see below for a demonstration of such a loop.
% load the data
sortedmat = importdata("sortedmat.txt");
% set the allowed delta
delta = 2;
% figure out the number of points
numPoints = size(sortedmat,1);
for i = 1:(numPoints-1)
% get the points we are now looking at
Point_A = sortedmat(i ,:);
Point_B = sortedmat(i+1,:);
% check the condition
MyCondition = Point_A(1) >= Point_B(1)-delta && Point_A(1) <= Point_B(1)+delta && ...
Point_A(2) >= Point_B(2)-delta && Point_A(2) <= Point_B(2)+delta;
% if the condition is false, stop the loop
if ~MyCondition
break
end
end
% get some info about the result
disp("The first "+num2str(i)+" consecutive points are within a delta of "+num2str(delta)+" pixels")
figure
plot(sortedmat(1:i,1),sortedmat(1:i,2),'r')
grid on
title('consecutive points within delta')
