Populates both indicator pickers from mfi and renders the animated
bubble scatter plot for the two indicators selected by the user.
Arguments
- id
Character. Module namespace id, must match the id used in
mod_scatter_ui().- mfi
Data frame of World Bank indicator values (long format, with
Indicator Name,Country Name,Year,valuecolumns).- country_code
Data frame mapping countries to region, with columns
Country Code,Short Name,Region.