Feature Representation

Feature Representation (Z-Map Reader)

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 topic.

The following sections describe parameters specific to each of the supported feature types.

Contours

Data

Fault

Header

Attribute Name

Contents

zmap_format_name

Name of the format contained on the format file.

Range: Maximum 47 characters

Default: No default

zmap_file_type

Type of input file.

Range: CNTR, DATA, FALT, VERT, TEXT or GRID.

Default: No default

zmap_line_length

Length of physical records on formatted disk file.

Range: Any integer

Default: 80

zmap_number_of_lines

Number of physical records that form a logical record.

Range: Any integer

Default: 1

zmap_output_header

Only used for export. Set to Header if format information is to be placed at the top of the data file being exported. Set to No Header otherwise.

Range: Header or No Header.

Default: No Header

zmap_attribute_list

List of user attributes.

zmap_null_value

Special number used in place of missing or unknown Z-values. Must be a value not equal to any existing Z-value.

Range: Any real number.

Default: 1.0E+30

Feature Representation (Z-Map Writer)

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 topic.

Each written Z-Map element, regardless of its geometry type, shares attributes in the following table. Parameters specific to each of the supported element types are listed below.

Attribute Name

Contents

zmap_type

The Z-Map geometric type of this entity.

Range:

zmap_point |

zmap_line |

zmap_text |

zmap_data |

zmap_fault |

zmap_contour |

zmap_vertex |

zmap_none

Default: No default

zmap_null_value

Special number used in place of missing or unknown Z-values. Must be a value not equal to any existing Z-value.

Range: Any real number

Default: 1E+031

zmap_file_type

The Z-Map dataset file type.

Range:

zmap_record |

zmap_contour |

zmap_data |

zmap_text |

zmap_fault |

zmap_vertex |

zmap_grid

Default: zmap_record

LATITUDE

The latitude of the first point. This only exists when the coordinate system is not specified or is Latitude/Longitude.

Range: Any real

Default: No default

LONGITUDE

The longitude of the first point. This only exists when the coordinate system is not specified or is Latitude/Longitude.

Range: any real

Default: No default

X (EASTING)

The x-coordinate. This only exists when the coordinate system is specified an is not Latitude/Longitude.

Range: any real

Default: No default

Y (NORTHING)

The y-coordinate. This only exists when the coordinate system is specified and is not Latitude/Longitude.

Range: Any real

Default: No default

Points

Lines

Text

Vertex

History

Attribute Name

Contents

zmap_history_text

Content of the history record.

Range: Any string.

Default: No default

Comment

Attribute Name

Contents

zmap_comment_text

Content of the comment record.

Range: Any string.

Default: No default