3.3.1.15. NXdetector_moduleΒΆ
Status:
base class, extends NXobject
Description:
Geometry and logical description of a detector module.
Many detectors consist of multiple smaller modules. Sometimes it is important to know the exact position of such modules. This is the purpose of this group. It is a child group to NXdetector.
Note, the pixel size is given as values in the array fast_pixel_direction and slow_pixel_direction.
Symbols:
No symbol table
- Groups cited:
- none
Structure:
data_origin: (optional) NX_INT
A dimension-2 or dimension-3 field which gives the indices of the origin of the hyperslab of data for this module in the main area detector image in the parent NXdetector module.
The data_origin is 0-based.
The frame number dimension (np) is omitted. Thus the data_origin field for a dimension-2 dataset with indices (np, i, j) will be an array with indices (i, j), and for a dimension-3 dataset with indices (np, i, j, k) will be an array with indices (i, j, k).
The order of indices (i, j or i, j, k) is slow to fast.
data_size: (optional) NX_INT
Two or three values for the size of the module in pixels in each direction. Dimensionality and order of indices is the same as for data_origin.module_offset: (optional) NX_NUMBER {units=NX_LENGTH}
Offset of the module in regards to the origin of the detector in an arbitrary direction.
@transformation_type: (optional) NX_CHAR
Obligatory value:translation@vector: (optional) NX_NUMBER
Three values that define the axis for this transformation@offset: (optional) NX_NUMBER
A fixed offset applied before the transformation (three vector components).@offset_units: (optional) NX_CHAR
Units of the offset.@depends_on: (optional) NX_CHAR
Points to the path of the next element in the geometry chain.fast_pixel_direction: (optional) NX_NUMBER {units=NX_LENGTH}
Values along the direction of fastest varying pixel direction. Each value in this array is the size of a pixel in the units specified. Alternatively, if only one value is given, all pixels in this direction have the same value. The direction itself is given through the vector attribute.
@transformation_type: (optional) NX_CHAR
Obligatory value:translation@vector: (optional) NX_NUMBER
Three values that define the axis for this transformation@offset: (optional) NX_NUMBER
A fixed offset applied before the transformation (three vector components).@offset_units: (optional) NX_CHAR
Units of the offset.@depends_on: (optional) NX_CHAR
Points to the path of the next element in the geometry chain.slow_pixel_direction: (optional) NX_NUMBER {units=NX_LENGTH}
Values along the direction of fastest varying pixel direction. Each value in this array is the size of a pixel in the units specified. Alternatively, if only one value is given, all pixels in this direction have the same value. The direction itself is given through the vector attribute.
@transformation_type: (optional) NX_CHAR
Obligatory value:translation@vector: (optional) NX_NUMBER
Three values that define the axis for this transformation@offset: (optional) NX_NUMBER
A fixed offset applied before the transformation (three vector components).@offset_units: (optional) NX_CHAR
Units of the offset.@depends_on: (optional) NX_CHAR
Points to the path of the next element in the geometry chain.