Sankey Chart: Link color based on Target Node
Since there isn't a feature to get a link color based on the Target node in Vizlib Sankey chart.
Whereas in Qlik Sankey chart, if we give ='TARGET' in the link color expression, then it is working as expected.
If we have this feature, we can suppress the null values in the middle nodes by assigning white color to both node and link.
Therefore, requesting you to add this feature to Vizlib Sankey chart.