[C47] FINancial menu

This area is for discussion about these families of custom high-end Scientific Calculator applications for SwissMicros devices.
Pyjam
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[C47] FINancial menu

Post by Pyjam »

Here are some thoughts and suggestions regarding the FINancial menu for C47 in g‑8⃣

1. It is obvious that it has been inherited from the WP43, and that Δ% has been added in a poor location. If the users are displaying this menu, they certainly want Δ% to be in direct access.

2. It is a good idea to add some basic one variable stat functions. They work well with the percentages and they would complete the %Σ function.
Bug report: today %Σ does not work, giving ∞ every time.

3. In particular, it is usefull to add a way to easily compute the deviation of any value from the mean value using (Δ%). That means adding x̄.

4. (Optional) It might be interesting to add a function that gives both %Σ and Δ%x̄ at the same time in X and Y. (Not presented in the picture.)

Here is a proposal to reorganize this menu.
(n is the n from the PLOT menu.)
Attachments
FINance.png
FINance.png (94.81 KiB) Viewed 1178 times

  Optimot : The ⌥ keyboard layout optimized for French and English (ŵïþ ʃʉŋ 𝕂åʁɒꝃțɛɹṩ).
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Jaymos
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Re: [C47] FINancial menu

Post by Jaymos »

Good points. I like it.

1. Agree

2. Basic stat can be added the way you propose. However there is no 1D stat. 1D stat means you simply ignore Y and the 2nd D.

Btw the bug is fixed. You must be the first testing this because its been like that forever 😵💫.

3. Fair enough

4. What shall we call it?
Jaco Mostert
Elec Eng, South Africa
https://47calc.com C47 (s/n 03818 & 06199), WP43 (0015). In box: HP42S, HP32Sii, WP34S&C, HP28C, HP35s, EL-506P, EL-W506, PB700; ex: FX702P, 11C, HP67 & HP85; iOS: 42s Byron, Free42+, WP31S/34S, HCalc.
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PierreMengisen
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Location: Neuchâtel CH

Re: [C47] FINancial menu

Post by PierreMengisen »

why not "%Σ,Δ%x̄" in gF3?
Pierre
[TI59 with PC100C; TI-84 Plus CE-T; HP41CV with HP IL loop & 2*82161A DCD & 82162 TP; HP15C; HP28S; DM41; DM41L; DM42; DM41X]
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Jaymos
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Re: [C47] FINancial menu

Post by Jaymos »

PierreMengisen wrote:
Thu Mar 23, 2023 4:54 pm
why not "%Σ,Δ%x̄" in gF3?
Sounds good to me.
Maybe half a space between.
Jaco Mostert
Elec Eng, South Africa
https://47calc.com C47 (s/n 03818 & 06199), WP43 (0015). In box: HP42S, HP32Sii, WP34S&C, HP28C, HP35s, EL-506P, EL-W506, PB700; ex: FX702P, 11C, HP67 & HP85; iOS: 42s Byron, Free42+, WP31S/34S, HCalc.
Pyjam
Posts: 495
Joined: Sat Jan 28, 2023 5:01 pm
Location: France

Re: [C47] FINancial menu

Post by Pyjam »

Considering that the g‑row is accessible by a double "click", we should put the least useful commands on the f‑row.
Here is a new proposal along these lines, which includes Δ%x̄.
Or maybe n should appear with the label "nΣ" which is actually its full name in the catalog.
Attachments
FINance.png
FINance.png (99.82 KiB) Viewed 1088 times

  Optimot : The ⌥ keyboard layout optimized for French and English (ŵïþ ʃʉŋ 𝕂åʁɒꝃțɛɹṩ).
Pyjam
Posts: 495
Joined: Sat Jan 28, 2023 5:01 pm
Location: France

Re: [C47] FINancial menu

Post by Pyjam »

A remark in passing, I know that %T is the label used since the HP 38C for this function, but if you think about it it's a rather curious choice insofar as one could think that T designates the T register which is however not involved in the operation.
I know that T is for Total but what total?
%y seems to me to be more in line with the other functions.
I confess, I’m quibbling.

  Optimot : The ⌥ keyboard layout optimized for French and English (ŵïþ ʃʉŋ 𝕂åʁɒꝃțɛɹṩ).
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Jaymos
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Re: [C47] FINancial menu

Post by Jaymos »

Pyjam wrote:
Thu Mar 23, 2023 9:35 pm
A remark in passing, I know that %T is the label used since the HP 38C for this function, but if you think about it it's a rather curious choice insofar as one could think that T designates the T register which is however not involved in the operation.
I know that T is for Total but what total?
%y seems to me to be more in line with the other functions.
I confess, I’m quibbling.
There is no reason to use a single letter T if

1. there is no standard to call Total anything, and

2. we can reasonably use a more descriptive name like %TT or even %TOTAL.
Jaco Mostert
Elec Eng, South Africa
https://47calc.com C47 (s/n 03818 & 06199), WP43 (0015). In box: HP42S, HP32Sii, WP34S&C, HP28C, HP35s, EL-506P, EL-W506, PB700; ex: FX702P, 11C, HP67 & HP85; iOS: 42s Byron, Free42+, WP31S/34S, HCalc.
Pyjam
Posts: 495
Joined: Sat Jan 28, 2023 5:01 pm
Location: France

Re: [C47] FINancial menu

Post by Pyjam »

I think "ratio" is the correct term.
[%Ratio] or [%RATIO]

  Optimot : The ⌥ keyboard layout optimized for French and English (ŵïþ ʃʉŋ 𝕂åʁɒꝃțɛɹṩ).
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Jaymos
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Re: [C47] FINancial menu

Post by Jaymos »

your menu mockup doesn't have the combined new command
Jaco Mostert
Elec Eng, South Africa
https://47calc.com C47 (s/n 03818 & 06199), WP43 (0015). In box: HP42S, HP32Sii, WP34S&C, HP28C, HP35s, EL-506P, EL-W506, PB700; ex: FX702P, 11C, HP67 & HP85; iOS: 42s Byron, Free42+, WP31S/34S, HCalc.
Pyjam
Posts: 495
Joined: Sat Jan 28, 2023 5:01 pm
Location: France

Re: [C47] FINancial menu

Post by Pyjam »

My preference is for [Ratio%] to replace [%T]. It follows the same logic as [Δ%] for the difference expressed as a percentage.

Regarding the new function, I think [%Σx, Δ%x̄] is too long, but at least it is very explicit and I don't have a better idea.

There is room above [TVM] for a future [BOND] menu but I have no experience with this topic.
Attachments
FINance.png
FINance.png (108.82 KiB) Viewed 977 times

  Optimot : The ⌥ keyboard layout optimized for French and English (ŵïþ ʃʉŋ 𝕂åʁɒꝃțɛɹṩ).
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