SumRowColumn dialog.
Table of Contents
SANS-specific algorithm which gives a single spectrum containing the total counts in either each row or each column of pixels in a square LOQ or SANS2D detector bank.
| Name | Direction | Type | Default | Description |
|---|---|---|---|---|
| InputWorkspace | Input | MatrixWorkspace | Mandatory | The input workspace, which must contain all the spectra from the bank of interest - no more and no less (so 128x128 or 192x192). |
| OutputWorkspace | Output | MatrixWorkspace | Mandatory | The name of the workspace in which to store the result. |
| Orientation | Input | string | Mandatory | Whether to sum rows (D_H) or columns (D_V). Allowed values: [‘D_H’, ‘D_V’] |
| XMin | Input | number | Optional | The starting X value for each spectrum to include in the summation. |
| XMax | Input | number | Optional | The ending X value for each spectrum to include in the summation. |
| HOverVMin | Input | number | Optional | The first row to include in the summation when summing by columns, or vice versa. |
| HOverVMax | Input | number | Optional | The last row to include in the summation when summing by columns, or vice versa. |
This algorithm is the equivalent of the COLETTE “DISPLAY H/V” command. It firsts integrates the input workspace, which must contain all the spectra from the detector of interest - no more and no less (so 128x128 or 192x192), between the X values given. Then each row or column is summed between the H/V_Min/Max values, if given, and the result is a single spectrum of row or column number against total counts.
The Integration v1 algorithm is used to sum up each spectrum between XMin & XMax.
Example - Sum rows of a 128*128 workspace
# Create a workspace with 128*128 spectra each with 5 values (only 128*128 or 192*192 are valid)
ws = CreateSampleWorkspace("Histogram", NumBanks=1, BankPixelWidth=128, BinWidth=10, Xmax=50)
# Run algorithm with Horizontal orientation
OutputWorkspace = SumRowColumn( ws, "D_H")
print "Input workspace has",ws.getNPoints(),"points."
print "Output workspace has",OutputWorkspace.getNPoints(),"points."
Output:
Input workspace has 81920 points.
Output workspace has 128 points.
Categories: Algorithms | SANS | Transforms\Grouping