Attribute
|
Type
|
Multiplicity
|
Description
|
alternateSign
|
Boolean
|
1..1
|
Default is 'False'. If true means that every second (real or complex) point should have its sign changed before further processing, as for classical TPPI or States-TPPI.
|
dim
|
PositiveInt
|
1..1
|
Dimension number. Dimensions go from 1 to numDim. For projections that means the numDim of the dataSource, not of the experiment. dim for an AbstractDataDim can be set independently of the dim for the corresponding ExpDim, although it is recommended that the acquisition dimension (if present) be given dim 1. The dim values correspond to the storage order in the corresponding file, 1 being the fastest varying dim.
|
fileDim
|
NonNegativeInt
|
0..1
|
Corresponding dimension in the dataSource (an integer, starting at zero).
|
firstValue
|
Float
|
1..1
|
Value of first point.
|
isComplex
|
Boolean
|
1..1
|
Defines whether the underlying data are complex, i.e. whether both real and imaginary values are stored.
|
maxValue
|
Float
|
0..1
|
Derived. Maximum value for points containing meaningful data, corresponding to the acquisition time in a normal FID. NB calculated from numPointsValid, the number of usable points, *not* from numPoints, the total number of points. By definition maxValue - firstValue = (numPointsValid - 1) * valuePerPoint
|
negateImaginary
|
Boolean
|
1..1
|
Default is 'False'. If true the imaginary part of complex numbers should be negated before further processing.
|
numPoints
|
NonNegativeInt
|
1..1
|
Number of points. When isComplex is True, numPoints is the number of complex points (i.e. the number of time values for an FID), not the number of real numbers stored, so that 1024 complex points take up the same pace as 2048 real points. numPoints measures the size of the stored file, whether or not all storage slots contain meaningful data. For a SampledDataDim numPoints must be equal to the length of the pointValues array. For sparse sampling this described the grid sampled on, not the number of actual points.
|
numPointsValid
|
NonNegativeInt
|
1..1
|
Number of points containing valid data. Assumed to start at point one. Must be smaller or equal than numPoints. To account for experiments stopped early or that otherwise have not filled all storage slots with valid data. The valid data points will be those from pointOffset+1 to pointOffset+numPointsValid (inclusive).
|
oversamplingInfo
|
Text
|
0..1
|
Text field describing oversampling of data, if any.
|
phase0
|
Float
|
0..1
|
(Approximate) zero order phase correction in degrees to be applied after Fourier transformation
|
phase1
|
Float
|
0..1
|
(Approximate) first order phase correction in degrees to be applied after Fourier transformation. By definition the point of no effect of the first order correction is point number one (before removal of points).
|
pointOffset
|
Int
|
1..1
|
Number of points at beginning of FID to ignore. Default zero. The first point with valid data will always be point 1 + pointOffset
|
shapeSerial
|
PositiveInt
|
0..1
|
Serial number of corresponding DataSourceShape, if any. Note that several AbstractDataDims may correspond to the same DataSourceShape.
|
spectralWidth
|
Float
|
0..1
|
Derived. Spectral width after Fourier transformation. Unit is the reciprocal of the unit used for the value (e.g. Hz for values in seconds). For complex points defined as 1.0/valuePerPoint. For real points defined as 0.5/valuePerPoint.
|
unit
|
Word
|
0..1
|
unit for values on dimension axis. Typically seconds for a normal FID. For a frequency dimension unit is Herz, *not* ppm. Note that values in ppm (and equivalent) require referencing, and that referencing belongs to the DataDimRef, not to the DataDim.
|
valuePerPoint
|
Float
|
1..1
|
Value per point. Corresponds to the difference between successive time (e.g.) values whether or not the points are complex.
|