oggm.Centerline

class oggm.Centerline(line, dx=None, surface_h=None, orig_head=None, rgi_id=None, map_dx=None)

Geometry (line and widths) and flow rooting properties, but no thickness

__init__(line, dx=None, surface_h=None, orig_head=None, rgi_id=None, map_dx=None)

Initialize a Centerline

Parameters:

line : shapely.geometry.LineString

The geometrically calculated centerline

dx : float

Grid spacing of the initialised flowline in pixel coordinates

surface_h : numpy.ndarray

elevation [m] of the points on line

orig_head : shapely.geometry.Point

geometric point of the lines head

rgi_id : str

The glacier’s RGI identifier

map_dx : float

the map’s grid resolution. Centerline.dx_meter = dx * map_dx

Methods

__init__(line[, dx, surface_h, orig_head, …])	Initialize a Centerline
set_apparent_mb(mb[, mu_star])	Set the apparent mb and flux for the flowline.
set_flows_to(other[, check_tail, to_head])	Find the closest point in “other” and sets all the corresponding attributes.
set_line(line)	Update the Shapely LineString coordinate.

Attributes

flows_to_indice	Indices instead of geometry
inflow_indices	Indices instead of geometries
normals	List of (n1, n2) normal vectors at each point.
surface_h	Needed for overriding later
widths	Needed for overriding later
widths_m