ntx_type: ntx_sounding
NTX sounding features consist of a depth that may also be associated with a symbol. Sounding features may have these attributes:
|
Attribute Name |
Contents |
|---|---|
|
ntx_scale |
The denominator of the largest scale for which the data is valid. A value of zero means the scale indicator is undefined. Range: signed 32-bit integer Default: 0 |
|
ntx_depth |
The numeric value of the sounding or depth. A negative value indicates height. Range: signed 32-bit integer Default: 0 |
|
ntx_sounding_flag |
The sounding flag word may be used to define various attributes of a sounding. For a complete list of the meanings of the 32 individual bits in this flag, consult official NTX documentation. Range: signed 32-bit integer Default: 0 |
|
ntx_optical_center_x ntx_optical_center_y |
This represents the plotted position of the sounding. If this differs from the true position in the geometry, the actual position is the geometry of this feature. Range: signed 32-bit integer Default: 0 |
|
ntx_rotation |
The angle of the sounding, in degrees. Range: -360.0 to +360.0 Default: 0.0 |
|
ntx_sounding_key |
This is an alphanumeric string that may be used as a cross-reference to additional sounding attributes held elsewhere. The sounding key must be in uppercase, left-justified, and padded with blanks to the right. Range: Maximum size is 12 characters. Default: <blank> |
|
ntx_tidal_reduction |
The sounding’s tidal reduction, in disk units. Range: Any real number Default: 0.0 |
|
ntx_collection_year |
The year the sounding was collected. Range: Any 4-digit number Default: 0000 |
|
ntx_collection_time |
The time the sounding was collected, in Julian centi-seconds, starting at 00:00 hours on January 1. As the number of centi-seconds in a year exceeds the maximum 32-bit number, 180 days are subtracted from the value. January 1st at 00:00 is stored as a time of -1546560000; December 31st 23:59:59.99 in a leap year is stored as +1615679999. If no time zone offset has been specified in the main header, time is assumed to refer to GMT. Range: signed 32-bit integer Default: 0 |
|
ntx_accuracy_factor |
The raw accuracy factor of the sounding, defined for CHS internal use. Range: signed 32-bit integer Default: 0 |
|
ntx_horizontal_accuracy ntx_vertical_accuracy |
The horizontal and vertical accuracy factors of this sounding, in ground units. Range: Any real number Default: 0.0 |
|
ntx_launch_ID |
This is an alphanumeric string that specifies the Launch ID. Range: Maximum size is 4 characters. Default: <blank> |
|
ntx_draft |
The draft value for this sounding. Range: signed 32-bit integer Default: 0 |