LoadLog dialog.
Table of Contents
| Name | Direction | Type | Default | Description |
|---|---|---|---|---|
| Workspace | InOut | MatrixWorkspace | Mandatory | The name of the workspace to which the log data will be added. |
| Filename | Input | string | Mandatory | The filename (including its full or relative path) of a SNS text log file (not cvinfo), an ISIS log file, or an ISIS raw file. If a raw file is specified all log files associated with that raw file are loaded into the specified workspace. The file extension must either be .raw or .s when specifying a raw file. Allowed extensions: [‘.txt’, ‘.log’] |
| Names | Input | str list | For SNS-style log files only: the names of each column’s log, separated by commas. This must be one fewer than the number of columns in the file. | |
| Units | Input | str list | For SNS-style log files only: the units of each column’s log, separated by commas. This must be one fewer than the number of columns in the file. Optional: leave blank for no units in any log. | |
| NumberOfColumns | Input | number | Optional | Number of columns in the file. If not set Mantid will attempt to guess. |
Parameters Note: Note that it is possible to use both of the optional ‘spectrum’ properties (i.e. a range and a list) together if so desired.
Assumes that a log file originates from a PC (not VMS) environment, i.e. the log files to be loaded are assumed to have the extension .txt. Its filename is assumed to starts with the raw data file identifier followed by the character ‘_’, and a log file is assumed to have a format of two columns, where the first column consists of data-time strings of the ISO 8601 form and the second column consists of either numbers or strings that may contain spaces.
LoadLog is also a child algorithm of LoadRaw v3, i.e. it gets called whenever LoadRaw is executed.
If the file is determined to be a SNS text log file it should be of the form
655747325.450625 0.000000 24.000000 26.000000 0.000000
655747325.716250 0.296875 24.000000 26.000000 0.000000
655747325.997500 0.593750 24.000000 26.000000 0.000000
655747326.263125 0.906250 24.000000 26.000000 0.000000
655747326.544375 1.093750 24.000000 26.000000 0.000000
655747326.825625 1.406250 24.000000 26.000000 0.000000
655747327.091250 1.703125 24.000000 26.000000 0.000000
655747327.372500 2.000000 24.000000 26.000000 0.000000
655747327.638125 2.203125 24.000000 26.000000 0.000000
655747327.919375 2.500000 24.000000 26.000000 0.000000
655747328.200625 2.796875 24.000000 26.000000 0.000000
655747328.466250 3.093750 24.000000 26.000000 0.000000
The first column is the number of seconds since January 1, 1990, then the other columns (space delimited) are the log values. For this mode the name and units parameters must be specified.
Example - Adding logs from a log file:
# create histogram workspace
dataX1 = [0,1,2,3,4,5,6,7,8,9] # or use dataX1=range(0,10)
dataY1 = [0,1,2,3,4,5,6,7,8] # or use dataY1=range(0,9)
dataE1 = [1,1,1,1,1,1,1,1,1] # or use dataE1=[1]*9
ws = CreateWorkspace(dataX1, dataY1, dataE1)
#get the log data out of the Workspace's run object
run = ws.getRun()
logs= run.getLogData()
print "Logs before adding:"
for i in range(0,len(logs)):
print logs[i].name
#ExampleForLog.log is taken from a NIMROD run
LoadLog(ws,"ExampleForLog.log")
print ""
run = ws.getRun()
logs= run.getLogData()
print "Logs after adding:"
for i in range(0,len(logs)):
print logs[i].name
Output:
Logs before adding:
run_title
Logs after adding:
run_title
beamcurrent
coupled_methane_temp
j5cx
j5cy
j6cx
j6cy
julabo_external
julabo_internal
moderator_horizontal
moderator_vertical
sample
sample_horizontal
sample_vertical
temp1
temp2
temp3
ts1beamcurrent
ts2beamcurrent
Categories: Algorithms | DataHandling | Logs