Big Data Computing

493Scaling of Geographic Space from the Perspective of City and Field Blocks

represent the largest cities (in terms of both the number of blocks and physi-

cal extent) in the countries. Owing to the use of Jenks’ natural breaks (Jenks

1967), which minimize intraclasses variation and maximize interclasses one,

it implies that in France there is no other cities in the same group as Paris—

the largest city in the country. This is indeed true that Paris has 62,242 city

blocks, more than ve times bigger than the second largest city. In the case of

Germany, this is another extreme that all biggest cities are very similar in size

around 20,000–30,000 ...