data.frame(name= c('Texas', 'California'), value= c(111, 222)) |>
ec.init( color= c('lightgray'), visualMap= list(min=111),
series.param= list(type= 'map', map= 'usa')
) |>
ec.registerMap('usa', 'https://echarts.apache.org/examples/data/asset/geo/USA.json')
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