MATLAB DDA (Digital Differential Analyzer) algorithm implementation

This algorithm takes coordinates of two points and links them using DDA algorithm.
Won't draw anything if x1, y1 and x2, y2 line coordinates are equal (is a point).

On the internet I found some DDA algortihms, that were not working propely,
taken some ideas from Akshay Upadhyay (http://www.cprogramto.com/c-program-for-dda-algorithm/)
and Chandan Kumar (https://se.mathworks.com/matlabcentral/fileexchange/25524-line-drawing-by-dda/content/DDA_Line.m)
and implemented my own DDA algorithm version. Feel free to modify it.

I set fixed axis, so take that into consideration.
Lines x range can change from -5 to 5 and y range can change from -5 to 5 too