I am trying to figure out a way to calculate a field in a set of data. In my search im returned events from a long list of computers. For lack of a better explanation, I have events that essentially each computer will throw once a day at the same time every day. I will have logs that have fields ComputerName, and ComputerValue. Every day the ComputerValue will be a different numeric value. I need to create a new field in each log that will be the difference between the ComputerValue field. So if day 1, Computer1 gives ComputerValue 10, and day 2 Computer1 gives ComputerValue 12, I need to at search time add a field to Computer1 that would be day 2 value minus day 1 value positive or negative. So day 2 will also have a value ComputerDifference of 2. and if day 3 computerValue is 8, it would be ComputerValue of day 2 minus day 3 and ComputerDifference would be -4. Its something I could easily do in Excel but I cant figure out a way to do it here. Any suggestions?  ... View more