Date/Time as X-axis in a scatter plot

Hi again,

I'm trying to plot some data with a time column as X-Axis, but even if the time column is of type string or time, it doesn't appear in the list of column that I can choose in the Scatter Plot properties and I'm getting this warning : 

WARN Scatter Plot Some columns are ignored: too many/missing nominal values.

There must be a way to have datetime data as x-axis, what am I doing wrong ?

Thanks in advance for your help and sorry for my english !

The Scatterplot needs to have the full domain info in order to visualize non-numeric columns. If you put the Domain Calculator before the Scatterplot you can recompute the possible values.