On 2009.03.18, at 11:07 , Irv Bromberg wrote:
The leap year lists can be generated by the currently posted public beta of Kalendis, but here are links to a few that I have posted on-line:
Fully Symmetrical:
Almost Symmetrical:
On 2009.03.18, at 12:52 , Irv Bromberg wrote:
I am now experimenting with inserting a blank line at the mid-point of the cycle to highlight the axis of symmetry.
If there are an even number of leap years then a single blank line half-way through the list is appropriate.
However if there are an odd number of leap years then the middle (leap) year needs a blank line above and below it, because it sits right on the axis of symmetry.
Well, I tried using blank rows and didn't like them, so undid that change.
Instead, I have adopted a more subtle indication: in the leftmost column appears the row number, enumerating each leap year in the list.
It is in light grey, with a ")" beside.
Now for symmetrical cycles, I show it in boldface, with a colon beside. This appears beside one row where there are an odd number of leap years, or beside two years when there are an even number of leap years.
This indication doesn't "hit you in the face" as blank rows would, but it is easy to discern if you look for it.
The posted version of the Kalendis beta is updated accordingly.
For the even-length cycles, I have reverted to the original formatting that makes no attempt to highlight any symmetry to the leap year list, except that now Kalendis makes sure that the first cycle at the epoch is always included in the listing for fixed arithmetic leap cycles. I have been thinking about using the symmetrical highlighting with red for even year-in-cycle for the first half of the cycle, then switching to red for odd year-in-cycle for the second half of the cycle, but it would be cumbersome to explain that in a short phrase at the top of the listing! Would that be a misleading way to present such lists?
You might need to refresh your web browser to see the updated versions of the above leap year lists.
-- Irv Bromberg, Toronto, Canada