Hi James and Friends
I saw your answer, and I checked the surfTria file again
adjusted by you ..
I must say that the macro ExTasselation does not respond in a timely manner
to the Row and Col inputs as well as the output exagon number
at this link:
http://www.mediafire.com/file/orqpc5jigc8lovh/M_ExGrid.zip/file
you will find the Macro that I have rectified, following
a method different from yours, but that presents an exact answer
between input data and output data ...
I did not have time to see the last files posted
I promise to do it as soon as possible
Have a nice day
alberto