Spatial-Temporal Differentiation and Dynamic Evolution of Digital Finance Inclusive Development in the Yangtze River Delta Economic Cluster of China
Table 1
Parameters of standard deviation ellipse of digital finance inclusive in Yangtze River Delta.
Year
2011
2013
2015
2017
2018
2019
2020
Center of gravity coordinates
119.25°E
119.10°E
119.05°E
119.02°E
119.03°E
119.03°E
119.02°E
31.27°N
31.37°N
31.41°N
31.46°N
31.45°N
31.45°N
31.45°N
The city where the coordinates are located
Changzhou
Nanjing
Nanjing
Nanjing
Nanjing
Nanjing
Nanjing
Travel distance (km)
—
18.64
5.7
6.00
0.87
0.08
0.89
Movement speed (km/a)
—
9.32
2.85
3.00
3.29
1.85
0.43
Turning angle (degrees)
142.87
140.99
140.67
140.80
140.83
140.86
140.73
Short half-axle (km)
172.18
175.56
175.89
176.65
176.61
176.59
176.90
Long half-axle (km)
288.57
292.36
293.06
293.18
292.93
293.10
293.03
Average shape index
0.597
0.600
0.600
0.603
0.603
0.602
0.604
Elliptical area ratio
1.000
1.033
1.004
1.005
0.999
1.000
1.002
Note: the average ellipse shape index is the ratio of the short semi-axis to the long semi-axis. The ellipse area ratio for the current period is the ratio of the ellipse area for the current period to the ellipse area for 1999, which is the base period for ellipse area. Therefore, the ratio of elliptical area in 1999 is 1.
