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I didn't find such a method in both CellGrid & ISEA3H classes, I believe there should be an opportunity to do this (e.g., for drawing/visualizing hexagons).

The numberofCellsByGrid test contains a loop testing resolutions [1,12]. The test fails on resolution values: 3, 4, 7, 8, and 9.

The values of 'cells' and 'cellsExpected' are always different by 4.

Example: at resolution 3, cells = 276, cellsExpected = 272. At resolution 9, cells = 196836, cellsExpected = 196832.

Thanks for this implementation. Is there a way to get the distance between two grid cells without actually computing the distance (e.g., haversine, computationally a bit expensive) between their centre's lat lon ? I guess the cells are fairly regular (except perhaps the 12 pentagons) and equal area, hence couldn't the network of cells themselves serve as a measure of distance (instead of going through lat,lon). I apologise if the functionality is already there and i missed to notice it. Thanks again.

Reading the readme and the code it's not immediately obvious how should one interpret the resolution variable used at many places in the code.

Would it be possible to elaborate on it?

I found a table in this paper (Appendix D, page 26) that nicely summarizes the properties of each possible resolution.
Is that table correct? If so, would it be possible to add something similar to the readme?

Hi,
Is it possible to get the parent of an hexagon cell from index value?lets say we have an id + 24 43125632 124326532 is there any way to get its parent hexagon?lets say in resolution 1?

also I was wondering to find a way to get neighbors around this hexagon. I was thinking of guessing them by distance of cell centers in that resolution but I have no idea if it works