Hans
Your use of ..."Pi" button for sum (adding) of a series of numbers & "Σ"
> button, for product
> Resonated with me because of my time with APL
> <https://en.wikipedia.org/wiki/APL_(programming_language)> (A Programming
> Language),
>
I was thinking of using APL symbols since they're in extended unicode, was
needing short buttons labels (why I used Pi and Σ) but if I add an actual
Pi/π key (3.14) I may switch to +/ for the sum key but I believe there's
also a shrunken sum unicode... think ppl would understand +/?
> It introduced the "/" symbol as an operator that applied another operator
> across all of the element of an argument. For example: " +/ 1 2 " produced
> 3 as the sum of 1 and 2, while " x/ 1 2 " produced the product of 2.
>
the wikitext sum & product math operators have a similiar layout but
reversed
I wonder if thats why they called them reducing operators?
the second function *(what I call multi) of add, subtract, multiply, divide
are similar, also reversed
-- =1 =2 =3 +1 (with the calculator-- type in 1 2 3 (1st field) click +
button type in 1 (2nd field) click = button)
I was thinking of a dropdown in between text entry fields but went with
buttons thinking of a data entry sequence like so: type in 1 2 3 (1st
field), type in 1 (2nd field), click + button, click = button, click Mn
button if you want to send result to a new operation)
> Of course many other binary operators could also be used such a cieiling
> (for Largest) and Floor (for smallest)
>
I'm seeing about incorpating the floor and ceil(ing) math operators
eventually along with
- *Unary operators* apply an operation to each number in the input list
(e.g. negate, truncate, sign)
- =1 =2 =3 =4 +[negate[]] evaluates to -1 -2 -3 -4
- =1.2 =2.4 =3.6 =4.8 +[trunc[]] evaluates to 1 2 3 4
- =1.2 =2.4 =3.6 =4.8 +[round[]] evaluates to 1 2 4 5
I believe I can use the macro from my filter builder to allow unlimited
chaining (currently at one math filter run) of math operations...
Thank you for sharing your work and for your contributions to the group.
>
no problem-- the urge to share often overrides the tendency to be
solitary-- just retired from a major group project to work on my own stuff
and I did say somewhere that the Ref Collective was going to be my grand
finale
you would potentially be amused by my resignation "speech"
--*(heav'n alluding to the project, hell to my own pursuits)
A mind not to be changed by place or time.
The mind is its own place, and in itself
Can make a heav'n of hell, a hell of heav'n.
There I may reign secure, and in my choice
to reign is worth ambition though in hell...
--
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