{'field': 'Lat', 'type': 'quantitative'}
{'field': 'Long', 'type': 'quantitative'}
{'field': 'region', 'type': 'nominal'}
{'field': 'USMapID', 'type': 'nominal'}
{'field': 'death', 'type': 'quantitative'}
{'field': 'confirmed', 'type': 'quantitative'}
{'field': 'date', 'type': 'temporal'}
Generate 29 vis, time last 1.714 s.

Cost:18.200

Cost:18.210

Cost:18.210

Cost:18.220

Cost:18.220

Cost:18.820

Cost:18.820

Cost:18.830

Cost:18.830

Cost:18.840

Cost:18.840

Cost:26.210

Cost:26.210

Cost:26.210

Cost:26.210

Cost:26.220

Cost:26.220

Cost:26.220

Cost:26.220

Cost:26.840

Cost:26.840

Cost:27.490

Cost:27.490

Cost:27.500

Cost:27.500

Cost:27.510

Cost:27.510

Cost:27.530

Cost:27.530