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International
Tables for Crystallography Volume G Definition and exchange of crystallographic data Edited by J. R. Hester and B. McMahon © International Union of Crystallography 2026 |
International Tables for Crystallography (2026). Vol. G. Early view chapter
https://doi.org/10.1107/97809553602060001011 Chapter 4.2 Core dictionary (coreCIF) |
Core dictionary version 3.3.0
_refine_ls.matrix_type
Name:_refine_ls.matrix_type
Aliases:
_refine_ls_matrix_type
_refine.ls_matrix_type
Definition:
Code identifying the matrix type used for least-squares derivatives.
Type: Text
The data value must be one of the following:
|
full | Full. |
|
fullcycle | Full with fixed elements per cycle. |
|
atomblock | Block diagonal per atom. |
|
userblock | User-defined blocks. |
|
diagonal | Diagonal elements only. |
|
sparse | Selected elements only. |
Category:
refine_ls
