Chi2 Distance results
Posted: Wed Nov 21, 2018 10:27 am
Hello everyone!
I am using CloudCompare to compare 2 point clouds via C2M. Using the 'Compute Statistical Parameters' tool I fit a Normal/Gaussian distribution statistical distribution to my scalar field, as in the graphics below:
The console shows the results of Chi2 Distance
CloudCompare Wiki describes this parameter as follows:
“The Chi2 distance gives an indication on the local concordance between the scalar values (of each point and its neighbors) and the tested distribution. The greater the less likely is the local distribution likely to follow the tested one”
Which value of Chi2 Distance shows that my scalar field follows a Gaussian distribution?
Does Chi2 Distance represent the test statistic of chi-squared test?
If this is the case, what data should I use to compute the critical value of chi-squared? E.g., could I consider [classes-1] as degrees of freedom, and what significance level do you recommend?
I am using CloudCompare to compare 2 point clouds via C2M. Using the 'Compute Statistical Parameters' tool I fit a Normal/Gaussian distribution statistical distribution to my scalar field, as in the graphics below:
The console shows the results of Chi2 Distance
CloudCompare Wiki describes this parameter as follows:
“The Chi2 distance gives an indication on the local concordance between the scalar values (of each point and its neighbors) and the tested distribution. The greater the less likely is the local distribution likely to follow the tested one”
Which value of Chi2 Distance shows that my scalar field follows a Gaussian distribution?
Does Chi2 Distance represent the test statistic of chi-squared test?
If this is the case, what data should I use to compute the critical value of chi-squared? E.g., could I consider [classes-1] as degrees of freedom, and what significance level do you recommend?