I have a interesting problem with a chart that has conditional expressions to show and hide the chart expressions. My chart is like the personalized report in "What's new in QV 11?", but in the my application I have 80 possible expressions. The funny thing is that if I select to show expressions that are the first ones in the list of expressions in the property window, the chart calculates instantly. If I select to show expression that are the last ones in the list of expressions in the property window, the chart calculates slowly. If I move those same expressions from the end of the list to the start of the list of expressions, the chart calculate instantly. So my question is, why would the position of the expression matter how fast the chart calculates? Doesn't QlikView have to go though the whole expression list regardless?
One other note John (which may or may not impact you) - if you are using variables to store the state of the conditionally selected dimensions / expressions and intend to do frequent QDS reloads of the application, please be aware that I have noticed variable values don't tend to survive the reload. I found field selections do survive, so I started using those instead to manage state. It may be possible to get variable values to survive (I didn't investigate this fully), but as the field selections seemed to work without any effort - I started using them instead. Just something to keep in mind if you are using variables to manage state.
