I am currently working with a chart that contains several expressions. The expressions rely on the current selection, and use the $ operator in their set analysis. The dimension that I am using for the chart is the date, and I have sorted by date. This works, but only for those dates where the result of the expression is not 0. For some reason it is taking all of the zero values and putting them at the end of the chart. For example, if I have March 2013-July 2013, and only have values for March, June, and July - the chart will display the values for March, June, and July first, and then will display the 0 values for April and May after that. Does anybody have an idea of why this is occurring?