Class PDFDataSet

               object --+    
                        |    
pdfcomponent.PDFComponent --+
                            |
                           PDFDataSet

Known Subclasses:

fitdataset.FitDataSet

PDFDataSet is a class for experimental PDF data.

Data members:
    robs       -- list of observed r points
    Gobs       -- list of observed G values
    drobs      -- list of standard deviations of robs
    dGobs      -- list of standard deviations of Gobs
    stype      -- scattering type, 'X' or 'N'
    qmax       -- maximum value of Q in inverse Angstroms.  Termination
                  ripples are neglected for qmax=0.
    qdamp      -- specifies width of Gaussian damping factor in pdf_obs due
                  to imperfect Q resolution
    qbroad     -- quadratic peak broadening factor related to dataset
    spdiameter -- particle diameter for shape damping function
                  Note: This attribute was moved to PDFStructure.
                  It is kept for backward compatibility when reading
                  PDFgui project files.
    dscale     -- scale factor of this dataset
    rmin       -- same as robs[0]
    rmax       -- same as robs[-1]
    filename   -- set to absolute path after reading from file
    metadata   -- dictionary for other experimental conditions, such as
                  temperature or doping

Global member:
    persistentItems -- list of attributes saved in project file
    refinableVars   -- set (dict) of refinable variable names.

Initialize.

name -- name of the data set. It must be a unique identifier.

Assign data member using PdfFit-style variable.
Used by applyParameters().

var   -- string representation of dataset PdfFit variable.
         Possible values: qdamp, qbroad, dscale
value -- new value of the variable

Obtain value corresponding to PdfFit dataset variable.
Used by findParameters().

var   -- string representation of dataset PdfFit variable.
         Possible values: qdamp, qbroad, dscale

returns value of var

load data from PDFGetX2 or PDFGetN gr file

filename -- file to read from

returns self

read experimental PDF data from a string

datastring -- string of raw data

returns self

Write experimental PDF data to a file.

filename -- name of file to write to

No return value.

String representation of experimental PDF data.

Return data string.

copy self to other. if other is None, create new instance

other -- ref to other object
returns reference to copied object