Crystallographic Information Framework

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Index

Image dictionary (imgCIF) version 1.3.2

Category ARRAY_INTENSITIES

Name:
'array_intensities'

Description:

   Data items in the ARRAY_INTENSITIES category record the
   information required to recover the intensity data from
   the set of data values stored in the ARRAY_DATA category.

   The detector may have a complex relationship
   between the raw intensity values and the number of
   incident photons.  In most cases, the number stored
   in the final array will have a simple linear relationship
   to the actual number of incident photons, given by
   _array_intensities.gain.  If raw, uncorrected values
   are presented (e.g. for calibration experiments), the
   value of _array_intensities.linearity will be 'raw'
   and _array_intensities.gain will not be used.

Example:

Example 1 
 
        loop_
        _array_intensities.array_id
        _array_intensities.linearity
        _array_intensities.gain
        _array_intensities.overload
        _array_intensities.undefined_value
        image_1   linear  1.2    655535   0


Category groups:
    inclusive_group
    array_data_group
Category keys:
    _array_intensities.array_id
    _array_intensities.binary_id

Mandatory category: no


International Tables for Crystallography

Volume G: Definition and exchange of crystallographic data

First online edition (2006)

Edited by S. R. Hall and B. McMahon

An essential guide and reference to CIF for programmers, data managers handling crystal-structure information and practising crystallographers.