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<< Click to Display Table of Contents >> Navigation: Explain™ Control Language > Library Routines > Curve classes > class IVT > Ivt.DataValue() |
Extract a single data item from an Ivt object.
The data item is taken from the ith data point and the jth data column. If no datum is taken the returned value is NIL.
Result = Ivt.DataValue(PointNum, ColNumber)
PointNum |
INDEX |
Point number, zero-based. If PointNum is out of range, a value from the last or acquired point is returned. |
NIL |
Always return a value from the last acquired point. |
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ColNumber |
INDEX |
A code identifying the column to be used. Use these predefined constants: •IVT_T = Time •IVT_Vf = Applied voltage •IVT_Vu = Uncompensated voltage •IVT_Im = Measured current •IVT_Am = Measured voltage Aux Channel •IVT_Sig = Signal sent to control amplifier |
Result |
REAL |
The returned value. |
NIL |
No datum acquired yet. |