Mosaic Display not working with data subset

[rokgomiscek]

Orange version 3.3.9

Expected behavior

Actual behavior

Widget displays error message, no visualization

Steps to reproduce the behavior

File -> Mosaic Display
File -> Data Table (select some rows) -> Mosaic Display

Additional info (worksheets, data, screenshots, ...)

[ajdapretnar]

@rokgomiscek Could you please test if the problem persists with the latest version? I can't replicate on iris.tab, is there any specific data set that causes such behavior?

[astaric]

This has been fixed in #2014. The problem was that discretizer removed constant features (all features are constant if you only select one instance).