gvisGeoChart(data, locationvar = "", colorvar = "", sizevar = "",
hovervar = "", options = list(), chartid)data.frame. The data has to have at
least one column with location name (locationvar),
value to be mapped to location. The format of the data
varies depending on which display mode that you use:
Regions or Markers.data with the
geo locations to be analysed. The locations can be
provide in two formats: [object Object],[object Object]data with the
optional numeric column used to assign a color to this
marker, based on the scale specified in the
colorAxis.colors property. If this column is not
present, all markers will be the same color.displayMode='markers'. Column name of data
with the optional numeric column used to assign the
marker size, relative to the other marker sizes. If this
column is not present, the value from the previous coludata with the
additional string text displayed when the user hovers
over this region.