I have created a chart using googleVis in a shiny app but I cannot find a way to set the number in the tooltip as percentage.
I have seen that this is possible if you specify a formatter . How could I possibly implement such a solution for a shiny app?
I know I could customize tooltips via html using roles but I don't want to go down that path.
You can use roles without using html code written by yourself:
library(googleVis)
dat <- data.frame(Year=2010:2013,
Sales=c(600, 1500, 800, 1000),
Sales.html.tooltip=c('15.4%',
'38.4%',
'20.5%',
'25.7%'),
Sales.certainty=c(TRUE, FALSE, TRUE, FALSE))
plot(
gvisColumnChart(dat, xvar='Year',
yvar=c('Sales', 'Sales.certainty', 'Sales.html.tooltip')
)
)
More examples: Using Roles via googleVis
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