Hi. I have a question about sp.correlogram in SPDEP.

I created a weight matrix of 5 nearest neighbors. To play around with the sp.correlogram function, I specified an order of 10 (which is the max. lag order). The plot came out  with spatial autocorrelation with 10 lags.

How to understand the 10 spatial lags? I mean the weight matrix only has information of the nearest 5 neighbors (i.e. the matrix only provides information for the first 5 lags). How does the program know which are the 6th-10th lag?

Sorry for the odd question. Perhaps it's because I misunderstood the concept of lag in the program. Can someone clarify this for me?

Thanks!

K.






       
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