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When I was working on my viz for Makeover Monday, I wanted to make a bar chart with year across the bottom.  Tableau would not let me create a bar chart unless I changed Year from continuous to discreet.  Once I made the change from continuous to discreet, however, I could no longer set the range for Year.  Would be nice not to have to live with the auto settings on my x-axis.

I've been participating in Makeover Monday for a few weeks now, and this week I was determined to use calculated fields. 

 

My first thought was to do something along a control chart vein.  Tableau provides ways to show the average along with the upper and lower limits, but a couldn't find a way to show a process shift with new averages, etc. within the chart.  I resisted the urge to manipulate the data in Excel and managed to break the data into ranges.  And then I hit a wall.  There was no way to turn my calculated field into a dimension I could use to define the ranges in the chart.  I'm now beginning to see why there is some data manipulation tool listed along with Tableau in job postings.