Float column with NULLs interpreted as categorical

[ben-greenteg]

Issue

When loading local .csv data, a column containing "floats and NULLs" was interpreted as categorical

default expected behavior

• interpret as numerical

possible open questions

• how to plot "numerical Nulls" (exclude by default from plots?)

[danmarshall]

In the data browser tab, there is a Column Types button. We do have the ability to go from numeric -> categorical but not the other way around.

We do have some inference on the ColumnStats object, perhaps we could add hasNumeric.