This function computes Euclidean distance along points aligned to a given gradient (e.g. elevation).
a matrix of x and y coordinates in some projected coordinate system
a vector of the same length as
min value of rescaled gradient values
max value of rescaled gradient values
This function is primarily intended for use within
scaled gradient values
cumulative distance, scaled to the interval of
0.5, nrow(coords) + 0.5
cumulative distance computed along gradient, e.g. transect distance
sorted gradient values
x coordinates, ordered by gradient values
y coordinate, ordered by gradient values
a vector index describing the sort order defined by gradient values
This function is very much a work in progress, ideas welcome.
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