Labels

wht_type: wht_label

WhiteStar TEXT features contain a single text label. When reading a WhiteStar entity, the reader will create a separate TEXT feature for each label in the entity. Similarly, the writer will create a single entity for each TEXT feature written.

The TEXT feature geometry consists of a single point to specify the location of the text. The following attributes are also present on TEXT features.

Attribute Name	Value	Required/ Optional
wht_label_string	Text of label entity. This is an alphanumeric character string of up to 212 characters. Default: “”	Optional
wht_label_length	Length of label text, in characters. Default: length of wht_label_string’s value.	Optional
wht_label_height	Height of the label text. This is an integer, and is interpreted according to the value of wht_label_units. Range: 0-99999 Default: 10	Optional
wht_label_units	Units by which to interpret the value of wht_label_height. Valid values are “L” for lat/long, “M” for metres, “F” for feet, “R” for relative, or “O” for other projection code. Default: 10	Optional
wht_label_angle	Angle by which text is rotated about its point. This is measured in degrees counterclockwise. Range: 0-360 Default: 01G/	Optional
wht_label_orientation	Flag to indicate whether the text is more vertical (value of “V”) or horizontal (value of “Z”). This is always computed at the time of writing.	Computed
wht_label_horijust	Horizontal justification of the string. Valid values are “L” for left-justified, “C” for centre-justified, or “R” for right-justified. Default: “C”	Optional
wht_label_vertjust	Vertical justification of the string. Valid values are “T” for top-justified, “C” for centre-justified, or “B” for bottom-justified. Default: “C”	Optional

Note that the attribute wht_label_angle specifies the rotation as a counterclockwise number, contrary to the value which is actually placed in the WhiteStar label record.