ITEM_STRUCTURE

The item_structure category holds a code which identifies a structure definition that is associated with a data item. A structure in this context is a reusable matrix or vector definition declared in category item_structure_list (Section ). The data item _item_structure.code is a child of the item _item_structure_list.code. The item _item_structure.code provides an indirect reference into the list of structure type definitions in category item_structure_list. The _item_structure.organization item describes the row/column precedence of the matrix organization.

The DDL for the item_structure category is given in the following section.

save_ITEM_STRUCTURE

    _category.description    
;
    This category holds the association between data items and 
    named vector/matrix declarations.
;
    _category.id                           item_structure
    _category.mandatory_code                no
    _category_key.name                     '_item_structure.name'
     loop_
    _category_group.id                     'ddl_group'
                                           'item_group'
    save_


save__item_structure.organization

    _item_description.description   
;
     Identifies if the struct is defined in column or row major order.
     Only the unique elements of symmetric matrices are specified.
;

    _item.mandatory_code                    yes
    _item_type.code                         code
     loop_ 
    _item_enumeration.value   
    _item_enumeration.detail    
                           'columnwise'     'column major order'
                           'rowwise'        'row major order'
    save_