In addition to the generic FME feature attributes that FME Workbench adds to all features (see About Feature Attributes), this format adds the format-specific attributes described in this section.
Each feature created in FME corresponds to either one data record or the entirety of header records.
There are numerous P190 data record types, each one with different data fields. Each record type corresponds to a feature type in FME. The corresponding feature type will store the data fields as attributes. In some cases, additional location-specific information will be stored as traits of the geometry for the feature type.
Currently data record types “Receiver Group Records (3-D Offshore Surveys)” and “Relation Records (3-D Offshore Surveys) are not supported. If you would like a data record type added, please contact safe@support.com.
The tables below list the FME feature types for “Type 1: Grid or Geographical Coordinates” and “Type 2 data record types, and the attributes each produces.
|
Feature Type |
Attribute | Contents |
|---|---|---|
|
p190_coordinates_points_record (on reader) p190_coordinates_record (on writer) |
p190_type |
This will always be p190_point. |
| p190_record_data |
Data record in its entirety. Range: Alphanumeric string of 80 characters Default: No default |
|
| p190_filename |
File name of the survey. Range: Any alphanumeric string Default: No default |
|
| p190_record_identifier |
Record identification character Range: ‘S’ (Centre of Source) | ‘G’ (Receiver Group) | ‘Q’ (Bin Centre) | ‘A’ (Antenna Position) | ‘T’ (Tail buoy Position) | ‘C’ (Common Mid-Point) | ‘V’ (Vessel Reference Point) | ‘E’ (Echo Sounder) | ‘Z’ (Other) Default: No default |
|
| p190_line_name |
Line name Range: Any alphanumeric string of 12 characters. Default: No default |
|
| p190_vessel_id |
Vessel ID Range: Any alphanumeric character Default: No default |
|
| p190_source_id |
Source ID Range: Any alphanumeric character Default: No default |
|
| p190_other_id |
Tail buoy or other ID Range: Any alphanumeric character Default: No default |
|
| p190_point_number |
Point number Range: Any alphanumeric string of six characters Default: No default |
|
| p190_latitude | Latitude in decimal degrees or grads Range: Any real number Default: No default | |
| p190_latitude_dir |
N/S direction for latitude specified above. Range: N or S Default: No default |
|
| p190_longitutde |
Longitude in decimal degrees or grads, Range: Any real number Default: No default |
|
| p190_longitude_dir |
E/W direction for longitude specified above. Range: W or S Default: No default |
|
| p190_angular_units |
Units for Latitude and Longitude measurements. Range: DEGREES | GRADS Default: DEGREES |
|
| p190_easting |
Map grid Easting. Range: Any real number (metres) or any integer value (non metric) Default: No default |
|
| p190_northing |
Map grid Northing. Range: Any real number (metres) or any integer value (non metric) Default: No default |
|
| p190_grid_units |
Units for X-Y grid measurements. Range: METRIC | NONMETRIC Default: METRIC |
|
| p190_depth |
Water depth or elevation Range: Any real number (vertical datum defined) or any integer value (non metric) Default: No default |
|
| p190_height_units |
Units for X-Y grid measurements. Typically the same as p190_grid_units Range: METRIC | NONMETRIC Default: METRIC |
|
| p190_date |
Julian day of the year Range: 1 to 366, inclusive. Default: No default |
|
| p190_time |
Time in hours, minutes, seconds with respective to GMT or as defined in p190_gmt_offset Range: Any three two-digit integer numbers |
|
Feature Type |
Attribute | Contents |
|---|---|---|
|
p190_offset_points_record (on reader) p190_offset_record (on writer) |
p190_type | This will always be p190_point. |
| p190_record |
Data record in its entirety. Range: Alphanumeric string of 80 characters Default: No default |
|
| p190_filename |
File name of the survey. Range: Any alphanumeric string Default: No default |
|
| p190_time_definition |
Clock time in respect of GMT (clock display in advance of GMT expressed as GMT + N hours) Range: Any alphanumeric string of length 48 Default: No default |
|
| p190_record_type_identifier |
Record identification character. This will always be “L”. |
|
| p190_record_identifier |
Record identification character Range: ‘S’ (Centre of Source) | ‘G’ (Receiver Group) | ‘Q’ (Bin Centre) | ‘A’ (Antenna Position) | ‘T’ (Tail buoy Position) | ‘C’ (Common Mid-Point) | ‘V’ (Vessel Reference Point) | ‘E’ (Echo Sounder) | ‘Z’ (Other) Default: No default |
|
| p190_line_name |
Line name Range: Any alphanumeric string of 12 characters Default: No default |
|
| p190_point_number |
Point number Range: Any alphanumeric string of six characters Default: No default |
|
| p190_point_suffix |
Suffix to point number for fractional intervals or point descriptors Range: Any alphanumeric string of three characters Default: No default |
|
| p190_northerly_offset |
Offset of point from reference point in Northerly direction. Positive represents North; Negative represents South. Range: Any real number Default: No default |
|
| p190_easterly_offset |
Offset of point from reference point in Easterly direction. Positive represents East; Negative represents West. Range: Any real number Default: No default |
|
| p190_depth |
Elevation or water depth. Range: Any real number Default: No default |
|
| p190_reference_name |
Name of reference point Range: Any alphanumeric string of 16 characters. Default: No default |
|
| p190_reference_latitude |
Reference point latitude in degrees, minutes, seconds with a single direction character. Range: Two two-digit numbers, followed by a real number, ending with either “N” or “S”. Default: No default |
|
| p190_reference_longitude |
Reference point longitude in degrees, minutes, seconds with a single direction character. Range: Two two-digit numbers, followed by a real number, ending with either “E” or “W”. Default: No default |
|
Feature Type |
Attribute | Contents |
|---|---|---|
| p190_control_file_lines_record | p190_type | This will always be p190_line |
| p190_record_type |
Record Identification character. Single character identifier for the type of record this is. |
|
| p190_line_name |
Line name Range: Any alphanumeric string of a length specified in the control file. Default: No default |
|
Feature Type |
Attribute | Contents |
|---|---|---|
| p190_control_file_points_record | p190_type | This will always be p190_point. |
| p190_latitude |
Latitude in decimal degrees or grads Range: Any real number Default: No default |
|
| p190_longitude |
Longitude in decimal degrees or grads, Range: Any real number Default: No default |
|
| p190 _easting |
Map grid Easting. Range: Any real number (metres) or any integer value (non metric) Default: No default |
|
| p190 _northing |
Map grid Northing. Range: Any real number (metres) or any integer value (non metric) Default: No default |
|
| p190 _depth |
Water depth or elevation Range: Any real number (vertical datum defined) or any integer value (non metric) Default: No default |
|
| p190 _point_number |
Point number Range: Any alphanumeric string of a length specified in the control file. Default: No default |
|
| p190_line_name |
Line name Range: Any alphanumeric string of a length specified in the control file. Default: No default |
|
| p190_filename |
File name of the survey. Range: Any alphanumeric string Default: No default |
|
Feature Type |
Attribute | Contents |
|---|---|---|
|
p190_coordinates_lines_record (reader only) |
p190_line_name |
Line name Range: Any alphanumeric string of 12 characters. Default: No default |
| p190_type |
This will always be p190_line. |
|
| p190_record_identifier |
Record identification character Range: ‘S’ (Centre of Source) | ‘G’ (Receiver Group) | ‘Q’ (Bin Centre) | ‘A’ (Antenna Position) | ‘T’ (Tail buoy Position) | ‘C’ (Common Mid-Point) | ‘V’ (Vessel Reference Point) | ‘E’ (Echo Sounder) | ‘Z’ (Other) Default: No default |
|
| p190 _longitude_dir |
E/W direction for longitude specified above. Range: W or S Default: No default |
|
| p190 _latitude_dir |
N/S direction for latitude specified above. Range: N or S Default: No default |
|
| p190_filename |
File name of the survey. Range: Any alphanumeric string Default: No default |
|
Feature Type |
Attribute | Contents |
|---|---|---|
|
p190_offset_lines_record (reader only) |
p190_line_name |
Line name Range: Any alphanumeric string of 12 characters. Default: No default |
| p190_record_identifier |
Record identification character. This will always be "L". |
|
| p190 _longitude_dir |
E/W direction for longitude specified above. Range: W or S Default: No default |
|
| p190 _latitude_dir |
N/S direction for latitude specified above. Range: N or S Default: No default |
|
| p190_filename |
File name of the survey. Range: Any alphanumeric string Default: No default |
Each P1/90 file contains several header records, which are accumulated into one FME feature type. Each different header is parsed corresponding to the header record type, and the fields are stored as list attributes on the header feature type. For header feature types, p190_type will always be p190_none.
The default value for non-coordinate system related records (datum, projection, and units) is “N/A”.
The default for datum is WGS-84.
The default for projection is UTM.
The default for units is metric and degrees.
Notes:
The reader header feature will produce the attributes header_description for the p190_onboard_system and for the p190_offset records. This is to allow the header descriptions for those fields to be written out if a file is round-tripped through FME.
While these attributes do not show up on the schema and are not created automatically for other fields, they can be added manually in the form of
p190_issue_date{0}.header_description
where p190_issue_date is the desired header record.
The writer will look for these attributes and write them out if they exist; otherwise, it will write out default values.
There is also a header_last_digits attribute for the p190_offset and the p190_sgsi_comment records: this determines the last two digits of the H09XX value and the last digit of the H800X value. The header_last_digits attribute will only work for these two record types.