search for: exnum

...I'm guessing (but cannot prove) that it's something like whether each experiment has values for both EnTime and ExTime? Assuming that cast is taking some sort of sum then I'd like to learn how to replace the value in the table with something meaningful to me. On thing would the the ExNum value from the first occurrence at that crosspoint, or the PL_Pos value, etc. How might I write a fun.aggregate to to that? Thanks, Mark > dim(MyResults) [1] 1105 12 > head(MyResults, n=15) ExNum PosType EnDate EnTime ExDate ExTime PL_Pos Costs Save2 time value id 1.1 1...

...I'm guessing (but cannot prove) that it's something like whether each experiment has values for both EnTime and ExTime?    Assuming that cast is taking some sort of sum then I'd like to learn how to replace the value in the table with something meaningful to me. On thing would the the ExNum value from the first occurrence at that crosspoint, or the PL_Pos value, etc.    How might I write a fun.aggregate to to that? Thanks, Mark > dim(MyResults) [1] 1105   12 > head(MyResults, n=15)      ExNum PosType  EnDate EnTime  ExDate ExTime PL_Pos Costs Save2 time value id 1.1      1   ...