Hello,
I spent a lot of time to experiment about these "shift by one".
I have no base to convert or create. But grounds in Orbiter interested me for a long time and, in fact, OT3 was, is, another tool than I wanted to know.
If one accept to spend - not you, you have enough to do with treeman - half an hour can be one hour, surftilecalculator paper and pencil in hand, old tilemanager eventually to be complete, starting from previous experiments - the ones I filled pages 2 and 3 of this topic - to try to understand how all this works and inform anomalies identified (starting from the information of the pdf, in confrontation with our own testing), if the equations at the end prove to be simple enough ... they do not match with those of Dr. Schweiger.
I can always be wrong but I think I did all this with rigor, own material, protocols, and NukeET but only NukeET, alas, seems to say that my results could be correct. Many were interested in your device - treeman, OT3 now - there is a month or two, but I no longer see them ...
And when NukeET confronts, our findings, handmade, with those of OT3, latest version, they are identical. Meaning that OT3 does the job as it could be done by hand with our own formulas.
There must be something, somewhere... or we deceive, are wrong, all three. It 's possible.
Is all that important at the point that we should call Dr. Schweiger for that ? I have no idea.