Count the number of possible warping paths
Count the number of warping paths compatible with the constraints.
- an object of class
- return an intermediate result
Count how many possible warping paths exist in the alignment
problem passed as an argument. The object passed as an argument
is used to look up the problem parameters such as the used step
pattern, windowing, open ends, and so on. The actual alignment is
Note that the number of paths grows exponentially with problems size. The result may be approximate when windowing functions are used.
TRUE, a matrix used for
the computation is returned instead of the final result.
The number of paths.
ds<-dtw(1:7+2,1:8,keep=TRUE,step=asymmetric); countPaths(ds) ## Result: 126