1985 年 20 巻 p. 85-90
In this paper, we discuss two kinds of density which are the number of urban facilities per area n/S and the total length of road per area Λ/s in area S. Let R be the distance to the nearest facility or road from a point and E(R) the mean value of R in this area. We obtain E(R)=C√(S/n) and E(R)=C S/Λ where C varies by the distributed patterns of facilities or road networks.