Cross correlation between a vectorial signal and a given shape
[sim, out] = ld_vecXCorrelation(sim, events, in, shape, vecsize)
in *+(vecsize) - vector signal
shape - vector to compare the input with
out *+(vecsize-length(shape) + 1) - output
Calculates the cross correlation between "in" and "shape"
The size of the output vector signal will be vecsize-length(shape) + 1