Multiple input columns for "hovervar" in gvisGeoChart?

[Masonavic]

Hi,

I noticed that in the documentation for GeoCharts, they show an example where they use 2 columns of data for the hovervar. On the other hand, the documentation for gvisGeoChart seems to imply that only one column of data can be passed to the hovervar argument. Is this the case? If so, will you be implementing multiple columns? It seems like a reasonably easy thing to do, looking at the var data = block in the documentation link above...

thanks!

[mages]

Isn't this already doable by specifying the colour and size variables? Here is an example:

library(googleVis)
CityPopularity$Area = 1:6
plot(gvisGeoChart(CityPopularity, locationvar='City', 
  colorvar='Popularity', sizevar = 'Area', 
  options=list(region='US',displayMode='markers'))

[Masonavic]

For a city, sure. But I want to do this at a country level. Like, say, have the tooltip show the total population and GDP, or instance, while the map color intensity shows population density.

[mages]

Ah, ok. Not sure this is possible.