sl.mhd.edge | R Documentation |
This function provides the (lon,lat) coordinates of an edge (e.g. sea ice edge) and of its land-ice interface, given a threshold value.
sl.mhd.edge(Var,LonGrid,LatGrid,Threshold)
Var |
The variable from which the edge has to be extracted. For sea ice this can be sea ice concentration or sea ice probability. Generally this is a 2D |
LonGrid |
The |
LatGrid |
The |
Threshold |
A threshold value (number). For sea ice concentration this is usually 15 % |
Please refer to the function sl.mhd.edge
to calculate the coordinates of the edge and of the land interface. sl.mhd.edge
output is the natural imput for sl.mhd
. The distance employed to compute the MHD is the "great circle distance", given by sl.gc.dist
.
A list containing the (lon,lat) coordinates of the edge and of the land-ice interface.
Lorenzo Zampieri
sl.mhd
list = sl.mhd.edge(SeaIceConcentration,LonGrid,LatGrid,Threshold)
## sl.mhd(Edge1,Edge2,LandEdge1,LandEdge2)
## Should result in double, which represent the MHD of the two edges in meters
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