2 Replies Latest reply on Nov 18, 2016 6:30 AM by Zach Leber

    trend lines break if all X values are the same

    Zach Leber

      We discovered that the trend line algorithm in Tableau breaks if all X values are the same (2 or more) and the fit is set to force y-intercept to zero. Workaround is to add jitter. We found this in our production data where we were estimate job duration based on job size and all sizes were the same but the durations were not.


      See embedded image and attached 9.3 TWBX. Pinging Bora Beran for any comments. I've already logged a tech support case.