Data Item _em_map.origin_row
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General 
- Item name
- _em_map.origin_row
- Category name
- em_map
- Attribute name
- origin_row
- Required in PDB entries
- yes
- Used in currrent PDB entries
- No
Item Description
The position of the first row of the map relative to the
Cartesian coordinate origin in voxel grid units.
(CCP4 map header word 6 NRSTART)
Data Type 
- Data type code
- int
- Data type detail
- int item types are the subset of numbers that are the negative or positive integers.
- Primitive data type code
- numb
- Regular expression
- [+-]?[0-9]+