how to prove that the code is correct to generate fractal dimension values

i have found code to find the value of fractal dimension use box-counting method.

this is the link : https://www.mathworks.com/matlabcentral/fileexchange/13063-boxcount?s_tid=srchtitle

but I want to validate the correctness of the code by calculating it manually too. Can anyone help me please? Thankyou in advance

Answer 1

[Walter Roberson]

I suggest comparing the results to some published examples, such as

https://www.researchgate.net/figure/An-example-of-box-counting-method_fig3_220601674

https://math.stackexchange.com/questions/2517426/box-counting-method-for-fractal-dimension