[R-sig-Geo] Package Ncf and p-value

Schmid Sarah Sarah.Schmid at unil.ch
Mon Oct 27 16:30:26 CET 2014


Dear list, 

I’m new in spatial analysis and I’m currently working on a project to test spatial autocorrelation. To do that, I tested different packages. I’m now working with the package NCF and I used the functions « correlog » and « plot correlog » to create a spatial correlogram. The « correlog » function gives an output like this:

$n
 1  2  3  4  5  6  7  8  9 10 11 12 13 
10 30 34 34 37 16 12 12 16  4  1  2  2 

$mean.of.class
        1         2         3         4         5         6         7         8         9 
 1549.835  3943.671  6244.956  8892.066 11016.439 13612.315 16021.493 18720.450 21273.439 
       10        11        12        13 
23958.896 25387.395 28385.142 31038.719 

$correlation
          1           2           3           4           5           6           7 
 0.33199900 -0.27605309 -0.11705592  0.08689537  0.08344518 -0.37666967 -0.08440457 
          8           9          10          11          12          13 
-0.18318189  0.12377523 -0.35018005 -0.24026463  0.86372582 -0.21476426 

$x.intercept
(Intercept) 
   2636.626 

$p
 [1] 0.09490509 0.08591409 0.31968032 0.17882118 0.18781219 0.08591409 0.47352647 0.29570430
 [9] 0.17582418 0.25474525 0.40159840 0.07192807 0.34465534

So, my question is about the p-value. Are they already corrected for multiple tests or should I use a a method like the Holm’s correction procedure?  

Thank you very much for your help 

Sarah 


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