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<< Click to Display Table of Contents >> Navigation: Explain™ Control Language > Library Routines > Curve classes > class PV > Pv.DataValue() |
Extract a single data item from an Pv object.
The data item is taken from the ith data point and the jth data column. If no data have been taken, the returned value is NIL.
DataValue = Pv.DataValue(PointNum, ColNumber)
PointNum |
INDEX |
Point number, zero-based. If PointNum is out of range, a value from the last acquired point is returned. |
NIL |
Always return a value from the last acquired point. |
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ColNumber |
INDEX |
Data column, with a range of 0 to 10. The meanings of the data in each column are given in the Pv.DataCol() description. |
DataValue |
REAL |
The returned value. |
NIL |
No data acquired yet. |