|Local statistics of a numerical variable include the nearest value in the data layer (focal value), sum, mean, standard deviation, minimum, maximum and other statistics calculated from values in the given neighbourhood. In addition, it is possible to calculate more complicated spatial indices. like autocorrelation indices, from a spatial data layer.||
The answer needs to be updated
|ID||P||Question or exercise|
|3987||2|| The attached file contains coordinates of Estonian churches from the National Topographical Database. There are less than 100 permanent residents in the 5 km neighbourhood of some churches.
Name these churches or their location.
|3992||3|| The file Madsa_L.rst in the attached archive contains a greyscale ortophoto where pixel edge is 1 m.