Available attributes

Below is a complete list of the results parameters from ndftrace. If the parameter is an array, it will have one element per dimension of the data array (given by parameter NDIM); except for EXTNAM and EXTTYPE where there is one element per extension (given by parameter NEXTN). Several of the axis parameters are only set if the ndftrace input keyword fullaxis is set (not the default). To obtain, say, the data type of the axis centres of the current dataset, the code would look like this.

     ndftrace fullaxis accept > dev/null
     set axtype = `parget atype ndftrace`

Name	Array?	Meaning
AEND	Yes	The axis upper extents of the NDF. For non-monotonic axes, zero is used. See parameter AMONO. This is not assigned if AXIS is FALSE.
AFORM	Yes	The storage forms of the axis centres of the NDF. This is only written when parameter FULLAXIS is TRUE and AXIS is TRUE.
ALABEL	Yes	The axis labels of the NDF. This is not assigned if AXIS is FALSE.
AMONO	Yes	These are TRUE when the axis centres are monotonic, and FALSE otherwise. This is not assigned if AXIS is FALSE.
ANORM	Yes	The axis normalisation flags of the NDF. This is only written when FULLAXIS is TRUE and AXIS is TRUE.
ASTART	Yes	The axis lower extents of the NDF. For non-monotonic axes, zero is used. See parameter AMONO. This is not assigned if AXIS is FALSE.
ATYPE	Yes	The data types of the axis centres of the NDF. This is only written when FULLAXIS is TRUE and AXIS is TRUE.
AUNITS	Yes	The axis units of the NDF. This is not assigned if AXIS is FALSE.
AVARIANCE	Yes	Whether or not there are axis variance arrays present in the NDF. This is only written when FULLAXIS is TRUE and AXIS is TRUE.
AXIS		Whether or not the NDF has an axis system.
BAD		If TRUE, the NDF's data array may contain bad values.
BADBITS		The BADBITS mask. This is only valid when QUALITY is TRUE.
CURRENT		The integer Frame index of the current co-ordinate Frame in the WCS component.
DIMS	Yes	The dimensions of the NDF.
EXTNAME	Yes	The names of the extensions in the NDF. It is only written when NEXTN is positive.
EXTTYPE	Yes	The types of the extensions in the NDF. Their order corresponds to the names in EXTNAME. It is only written when NEXTN is positive.
FDIM	Yes	The numbers of axes in each co-ordinate Frame stored in the WCS component of the NDF. The elements in this parameter correspond to those in FDOMAIN and FTITLE. The number of elements in each of these parameters is given by NFRAME.
FDOMAIN	Yes	The domain of each co-ordinate Frame stored in the WCS component of the NDF. The elements in this parameter correspond to those in FDIM and FTITLE. The number of elements in each of these parameters is given by NFRAME.
FLABEL	Yes	The axis labels from the current WCS Frame of the NDF.
FLBND	Yes	The lower bounds of the bounding box enclosing the NDF in the current WCS Frame. The number of elements in this parameter is equal to the number of axes in the current WCS Frame (see FDIM).
FORM		The storage form of the NDF's data array.
FTITLE	Yes	The title of each co-ordinate Frame stored in the WCS component of the NDF. The elements in this parameter correspond to those in FDOMAIN and FDIM. The number of elements in each of these parameters is given by NFRAME.

Name	Array?	Meaning
FUBND	Yes	The upper bounds of the bounding box enclosing the NDF in the current WCS Frame. The number of elements in this parameter is equal to the number of axes in the current WCS Frame (see FDIM).
FUNIT	Yes	The axis units from the current WCS Frame of the NDF.
HISTORY		Whether or not the NDF contains HISTORY records.
LABEL		The label of the NDF.
LBOUND	Yes	The lower bounds of the NDF.
NDIM		The number of dimensions of the NDF.
NEXTN		The number of extensions in the NDF.
NFRAME		The number of WCS domains described by FDIM, FDOMAIN and FTITLE. Set to zero if WCS is FALSE.
QUALITY		Whether or not the NDF contains a QUALITY array.
TITLE		The title of the NDF.
TYPE		The data type of the NDF's data array.
UBOUND	Yes	The upper bounds of the NDF.
UNITS		The units of the NDF.
VARIANCE		Whether or not the NDF contains a VARIANCE array.
WCS		Whether or not the NDF has any WCS co-ordinate Frames, over and above the default GRID, PIXEL and AXIS Frames.
WIDTH	Yes	Whether or not there are axis width arrays present in the NDF. This is only written when FULLAXIS is TRUE and AXIS is TRUE.