Owen,
I just tried the following line and it works for all of the datapoints
except the "VERY 1st" and the "VERY last".
>CDEF:totalP=PREV,UN,0,PREV,IF,FromDEF,UN,0,FromDEF,IF,1800,*,+
for example:
time datapoint
------------ ------------
1:00 10
1;30 30
2:00 2
2:30 10
3:00 50
Total should be = 102
but the totalP variable = 42
I'll try to figure out how to add the first and the last datapoints.
Clarence
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