ntx_type: ntx_spot_height
NTX spot height features are either single point features or aggregates of point features. The reader keyword AGGREGATE_SOUNDINGS controls the creation of spot heights in this regard. The NTX writer accepts either aggregates or single point features. The spot heights themselves consist of an elevation that may also be associated with a symbol. Spot height 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_weight |
The line weight of the object, in steps of 0.001 inches at map scale. A positive value indicates that a rectangular slit should be used to plot the line. A negative value indicates that a round dot should be used to plot the line. Range: signed 32-bit integer Default: 0 |
|
ntx_font |
The font is specified with an integer value that refers to a pattern file which defines the shape of the text characters. The format of such a pattern file is outside the scope of the NTX format definition, allowing users the freedom to design their own font formats. Range: signed 32-bit integer Default: 1 |
|
ntx_height |
The numeric value of the spot height or elevation. Range: signed 32-bit integer Default: 0 |
|
ntx_label |
The label for the spot height. This is a text string containing the numeric height value. Range: Any character string Default: <blank> |
|
ntx_label_x ntx_label_y |
The position of the label. Range: Any real number Default: 0.0 |
|
ntx_label_size |
This value represents the size of the label in ground units. Range: positive real number |
|
ntx_symbol_size |
If this value is positive, it represents the size of the symbol in ground units. Negative values mean a magnification, relative to the size defined for the symbol in the external pattern file. External pattern files are beyond the scope of this software and therefore users are expected to interpret negative values in the way that they find most appropriate. Range: signed real number Default: 1 |
|
ntx_spot_height_key |
This is an alphanumeric string that may be used as a cross-reference to additional spot height attributes held elsewhere. The spot height key must be in uppercase, left-justified, and padded with blanks to the right. Range: Maximum size is 12 characters. Default: <blank> |
|
ntx_label_rotation |
The angle of the string, in degrees. Range: -360.0 to +360.0 Default: 0.0 |
|
ntx_symbol_rotation |
The angle of the symbol, in degrees. Range: -360.0 to +360.0 Default: 0.0 |
|
ntx_spacing |
The character spacing of the label measured in disk units. Range: -360.0 to +360.0 Default: 1.0 |
|
ntx_agg_list{} |
This attribute is only present on soundings that are read in as aggregates using the AGGREGATE_SOUNDINGS keyword. This attribute will hold one string value for each sounding present in the aggregate. The string value will be a comma-separated list of <attributeName>,<attributeValue> pairs. All the attributes listed above will be present in this list. |