Provides a peak shape function interface for a peak on one time slice of a Rectangular detector.
Formula: V=Background+Intensity*Normal( μx, μy, σx, σy)
The Normal(..) is the Normal probability density function. Its integral over all x(col) and y(row) values is one. This means that Intensity is the total intensity with background removed.
Name | Type | Default | Description |
---|---|---|---|
CalcVariances |
There is only one Attribute: CalcVariances. This attribute is boolean.
If true, the variances are calculated from the data, given the means, variances and covariance. Otherwise they will become parameters and fit.
CalcVariances = true gives better/more stable results for peaks interior to the Rectangular Detector. For peaks close to the edge, CalcVariances should be false.
Name | Default | Description |
---|---|---|
Background | 0.0 | |
Intensity | 0.0 | |
Mcol | 0.0 | Mean column(x) value |
Mrow | 0.0 | Mean row(y) value |
The workspace can be “any” MatrixWorkspace where
The data can have missing row and column values and need not represent a square or contiguous subregion of a panel
The values for out in function1D are, for each pixel, the difference of V(see formula) and dataY(0).
Categories: FitFunctions | Peak