Table 5 Ellipse variance analysis results of urban form
From: HGIS based analysis of urban morphological evolution in historic Kaifeng
Period | Center X/° | Center Y/° | XtdDist/KM | YStdDist/KM | Rotation/° |
|---|---|---|---|---|---|
Northern Song period (AD 1120–1367) | 114.348506 | 34.795352 | 2.95833 | 2.67134 | 49.63952 |
Ming period (AD 1368–1642) | 114.348975 | 34.802192 | 1.21038 | 0.98541 | 65.39525 |
Qing period (AD 1662–1911) | 114.348763 | 34.80433 | 1.25235 | 1.04617 | 35.98806 |
Republic of China period (AD 1912–1949) | 114.348976 | 34.801251 | 1.99665 | 1.50933 | 23.04577 |
