toMapOfLists method
A conversion of this data frame to a map of lists.
Implementation
Map<String, List<String>> toMapOfLists({
Map<String, int> fixedPlaces = const {},
}) =>
{
for (final MapEntry(:key, :value) in numericColumns.entries)
key: [
for (final x in value.values)
fixedPlaces.containsKey(key)
? x.toStringAsFixed(fixedPlaces[key]!)
: x.toString()
],
for (final MapEntry(:key, :value) in categoricColumns.entries)
key: [for (final x in value.values) '"$x"']
};