### Re: [Scilab-users] spatial correlation coefficient: Is the MATLAB corrcoef function doing the job?

Le 08/02/2018 à 20:16, Heinz a écrit : Sorry, I am lost. I have 10,000 xyz data and want to know, if there is some regularity in them or if they are more or less random. So you need and are speaking about the 3D autocorrelation of data(x,y,z). Usually we compute it through a 3D convolution,

### Re: [Scilab-users] spatial correlation coefficient: Is the MATLAB corrcoef function doing the job?

Hello, There seems to be some statistical tests related to this, namely Moran’s or Mantel tests : https://stats.idre.ucla.edu/other/mult-pkg/faq/general/faq-how-can-i-detectaddress-spatial-autocorrelation-in-my-data/ http://www.petrkeil.com/?p=1050 hth S. Le 08/02/2018 à 20:16, Heinz a

### Re: [Scilab-users] spatial correlation coefficient: Is the MATLAB corrcoef function doing the job?

1 The nearest neighbour distribution of N points in a 3d-Volume with radius R is given by W(r) = 1 - exp[ - N (r/r)^3] and this is a Weibull distribution and not a Poisson distribution. The WIKI article, while correct, is a typical case where high level statisticians are trying to make

### Re: [Scilab-users] spatial correlation coefficient: Is the MATLAB corrcoef function doing the job?

You may want to study this article: https://pdfs.semanticscholar.org/574f/8f7347a258f6431fb8316716ca51b9b7eacb.pdf it should give you a clue or two of what you may want to implement. -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Heinz Sent: Friday,

### Re: [Scilab-users] spatial correlation coefficient

Looks interesting, but --uff-- difficult... Thanks the lot Heinz -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Rafael Guerra Sent: 09 February 2018 21:58 To: Users mailing list for Scilab Subject: Re: [Scilab-users] spatial