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SaveDaveGrp v1¶
Summary¶
Saves a 2D workspace to DAVE grouped data format file.See http://www.ncnr.nist.gov/dave/documentation/ascii_help.pdf
See Also¶
This algorithm is also known as: SaveDASC
Properties¶
Name |
Direction |
Type |
Default |
Description |
|---|---|---|---|---|
InputWorkspace |
Input |
Mandatory |
An input workspace. |
|
Filename |
Input |
string |
Mandatory |
A DAVE grouped data format file that will be created. Allowed extensions: [‘.grp’] |
ToMicroEV |
Input |
boolean |
False |
Transform all energy units from milli eV to micro eV |
Description¶
Saves a workspace to a DAVE grp file. A description of the DAVE grouped data format can be found here.
Usage¶
The DAVE grouped ASCII file is normally used to support S(Q, E) workspaces. So, a contrived example will be created.
Note
To run these usage examples please first download the usage data, and add these to your path. In Mantid this is done using Manage User Directories.
ws = Load("CNCS_7860_event.nxs")
ws = ConvertUnits(ws, Target="DeltaE", EMode="Direct", EFixed=3.0)
ws = Rebin(ws, Params=[-3,0.01,3], PreserveEvents=False)
ws = SofQW(ws, QAxisBinning=[0.2,0.2,3], EMode="Direct", EFixed=3.0)
print("Workspace size = ( {} , {} )".format(ws.getNumberHistograms(), ws.blocksize()))
import os
savefile = os.path.join(config["default.savedirectory"], "CNCS_7860_sqw.grp")
SaveDaveGrp(ws, Filename=savefile)
print("File created: {}".format(os.path.exists(savefile)))
ifile = open(savefile, 'r')
lines = ifile.readlines()
ifile.close()
# Number of lines = header(4) + Q axis spec(1 + 14) + E axis spec(1 + 600)
# + data(14 * 601)
print("Number of lines = {}".format(len(lines)))
Output:
Workspace size = ( 14 , 600 )
File created: True
Number of lines = 9034
Categories: AlgorithmIndex | DataHandling\Text | Inelastic\DataHandling
Source¶
C++ header: SaveDaveGrp.h
C++ source: SaveDaveGrp.cpp