CreateSingleValuedWorkspace v1¶

Summary¶

Creates a 2D workspace containing a single X, Y & E value.

Properties¶

Description¶

Creates a 2D workspace that contains a single value and an optional error value. This was traditionally used for doing binary operations between a workspace and a single value. However, now that the Python access allows the standard binary operations with workspaces & single numbers, the requirement for this algorithm is almost gone.

One use case for which it will be required is when performing operations using only the MantidPlot GUI point-and-click approach.

Usage¶

Workspace with single y value and zero error:

five = CreateSingleValuedWorkspace(5)

print "Number of histograms:",five.getNumberHistograms()
print "Length of y array:",len(five.readY(0))
print "Length of e array:",len(five.readE(0))
print "Length of x array:",len(five.readX(0))

print "y value:",five.readY(0)
print "e value:",five.readE(0)

Output:

Number of histograms: 1
Length of y array: 1
Length of e array: 1
Length of x array: 1
y value: [ 5.]
e value: [ 0.]

Workspace with single y and e value:

five = CreateSingleValuedWorkspace(5, 0.1)

print "Number of histograms:",five.getNumberHistograms()
print "Length of y array:",len(five.readY(0))
print "Length of e array:",len(five.readE(0))
print "Length of x array:",len(five.readX(0))

print "y value:",five.readY(0)
print "e value:",five.readE(0)

Output:

Number of histograms: 1
Length of y array: 1
Length of e array: 1
Length of x array: 1
y value: [ 5.]
e value: [ 0.1]

Categories: Algorithms | Utility | Workspaces

Source¶

C++ source: CreateSingleValuedWorkspace.cpp

C++ header: CreateSingleValuedWorkspace.h