Represent null data as zero in line chart

Anonymous Not sure why the +0 is not working. You might try something like:

Value =
  VAR __Value = SUM('Table'[Column])
RETURN
  IF(ISBLANK(__Value),0,__Value)

Perhaps turn on "show items with no data"?

Not really enough information to go on otherwise, please first check if your issue is a common issue listed here: https://community.powerbi.com/t5/Community-Blog/Before-You-Post-Read-This/ba-p/1116882

Also, please see this post regarding How to Get Your Question Answered Quickly: https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490

The most important parts are:
1. Sample data as text, use the table tool in the editing bar
2. Expected output from sample data
3. Explanation in words of how to get from 1. to 2.