Per the documentation here there is the ability to pass a function for certain parameters of the column formatter but when I try passing something like:
{"title":"Example", "field" : "example", "formatter" : "progress", "formatterParams" : { "min" : 0, "max" : 10, "color" : ["green", "orange", "red"], 'legend': "function(value) { return value + '%'; }" "legendColor" : "#000000", "legendAlign":"center", }}
I just end up with the table displaying the text "function(value) { return value + '%'; }" in each cell for that column.
This maybe a user error rather than a bug...