prospect.surveyunit¶
-
class
prospect.surveyunit.SurveyUnit(name: str, coverage_name: str, shape: shapely.geometry.polygon.Polygon, surveyunit_type: str, length: Optional[float] = None, radius: Optional[float] = None, min_time_per_unit: Union[float, scipy.stats._distn_infrastructure.rv_frozen] = 0.0)[source]¶ Bases:
objectRepresents a spatial unit of survey like a transect or radial unit.
This class is not normally used directly. It is usually more efficient to use the constructor methods of the Coverage class to create many SurveyUnit objects at once.
- Parameters
name (str) – Unique name for the survey unit
coverage_name (str) – Name of the parent coverage
shape (Polygon) – Geographic specification
surveyunit_type ({'transect', 'radial'}) – Type of the unit
length (float, optional) – Length of transect units (the default is None)
radius (float, optional) – Radius of radial units (the default is None)
min_time_per_unit (Union[float, rv_frozen], optional) –
Minimum amount of time required to complete one “unit” of survey, given no surveyor speed penalty and no time penalty for recording features. The default is 0.0.
Because transects can differ in length, transect coverages should specify this term as time per one unit of distance (e.g., seconds per meter).
For radial survey units, this term should be specified more simply as time per one survey unit.
-
name¶ Unique name for the survey unit
- Type
str
-
coverage_name¶ Name of the parent coverage
- Type
str
-
shape¶ Geographic specification
- Type
Polygon
-
surveyunit_type¶ Type of the unit
- Type
{‘transect’, ‘radial’}
-
surveyunit_area¶ Area value calculated from the shape
- Type
float
-
length¶ Length of transect units
- Type
float
-
radius¶ Radius of radial units
- Type
float
-
min_time_per_unit¶ Minimum amount of time required to complete one “unit” of survey, given no surveyor speed penalty and no time penalty for recording features.
Because transects can differ in length, transect coverages should specify this term as time per one unit of distance (e.g., seconds per meter).
For radial survey units, this term should be specified more simply as time per one survey unit.
- Type
Union[float, rv_frozen]