Hi All,

Let’s assume that I have an N-dimensional image that includes a spectral dimension (e.g. XYZC). I’d like to iteratively access the channel vectors (i.e. the values across the spectral dimension) for all pixels in the image. **My goal is to take the dot product of each channel vector and some other vector.** It seems that this should be doable using `Views.hyperSlice`

as in Example6a4.java from the ImgLib2 examples.

The inputs for `Views.hyperSlice`

are not quite clear to me. I feel safe in assuming that `int[] fixedAxes`

is my spectral dimension which I can get with `int cDim = img.dimensionIndex(Axes.CHANNEL);`

. I’m not sure what I should be passing as `long[] position`

. I think this should be the position along the spectral dimension at which the hyperslice is taken; however, the doc suggests that `position`

is something else: “The position is passed as position vector in source space, i.e. the positions along fixed axes are ignored.” I’d appreciate any clarification someone can provide on this point. Alternative methods are also welcomed.

Thanks!