IndexToScale

IndexToScale (wave, index, dim)

The IndexToScale function returns the scaled coordinate value corresponding to wave element index in the specified dimension.

The IndexToScale function was added in Igor Pro 7.00.

Details

The function returns the expression:

DimOffset(wave,dim) + index*DimDelta(wave,dim)

index is an integer.

dim is 0 for rows, 1 for columns, 2 for layers or 3 for chunks.

The function returns NaN if dim is not a valid dimension or if index is greater than the number of elements in the specified dimension.

Examples

Make/N=(10,20,30,40) w4D
SetScale/P y 2,3,"", w4D
SetScale/P z 4,5,"", w4D 
SetScale/P t 6,7,"", w4D
Print IndexToScale(w4D,1,0)
Print IndexToScale(w4D,1,1)
Print IndexToScale(w4D,1,2)
Print IndexToScale(w4D,1,3)
Print IndexToScale(w4D,1,4)
Print IndexToScale(w4D,-1,0)
Print IndexToScale(w4D,11,0)

See Also

ScaleToIndex, pnt2x, DimDelta, DimOffset

For an explanation of wave scaling, see The Waveform Model of Data.