Zohreh,
I pulled the paper. I see no reason you need to use SymPy to do the
numerical fitting. I would approach this by inputting the species in a
dictionary or list and then use that to call functions that generate the
computed value for each term/sum. Are you trying to keep track of the
complete symbolic expression or do a numerical calculation?
If you are using chemical symbols or reactions, are you taking advantage
of ChemPy?
Jonathan
On Tuesday, August 23, 2022 at 12:01:02 AM UTC-5 z.kari...@gmail.com wrote:
> As following, I should generate each parameters dynamically (for 20-30
> terms):
>
> term_vnca = 0
> for k in anion:
> for j in cation:
> for i in neutral:
> term_vnca += term_vncX - 4 * 3 * sp.symbols(f'X{str(k)}') *
> sp.symbols('X{0}'.format(str(i))) \
> ** 2 * sp.symbols(f'V{str(i)}{str(j)}{str(k)}')
> lnfXs = term_wnca + term_unca + term_vnca + termx_w_solvent1 +
> termx_w_solvent2
>
> Zohreh Karimzadeh
> *https://www.researchgate.net/profile/Zohreh-Karimzadeh*
> <https://www.researchgate.net/profile/Zohreh-Karimzadeh>
> Skype Name 49a52224a8b6b38b
> Twitter Account @zohrehkarimzad1
> z.kari...@gmail.com
> +989102116325 <+98%20910%20211%206325>
>
> ((((((((((((((((Value Water)))))))))))))))
>
>
> On Tue, Aug 23, 2022 at 9:26 AM Zohreh Karimzadeh <z.kari...@gmail.com>
> wrote:
>
>> Not these model and parameters, My model is very complicated wit large
>> number of parameters:
>> [image: image.png]
>> As a very simple example I raise this question.
>> Zohreh Karimzadeh
>>
>> Contact me on
>> +989102116325 <+98%20910%20211%206325>
>> and at
>> z.kari...@gmail.com
>> 🌧️🌍🌱
>>
>>
>> On Tue, 23 Aug 2022, 05:16 Peter Stahlecker, <peter.st...@gmail.com>
>> wrote:
>>
>>> Dear Zohreh,
>>>
>>> Just for my understanding:
>>> 1.
>>> You params are alpha, betta ,gamma, eta (?)
>>> 2.
>>> What do you mean by generating them dynamically?
>>>
>>> Peter
>>>
>>> On Tue 23. Aug 2022 at 02:44 Zohreh Karimzadeh <z.kari...@gmail.com>
>>> wrote:
>>>
>>>> Dear Oscar
>>>> BIG help !
>>>> Here I seriously need to use sympy to generate my params dynamically.
>>>> All Bests
>>>> Zohreh Karimzadeh
>>>> *https://www.researchgate.net/profile/Zohreh-Karimzadeh*
>>>> <https://www.researchgate.net/profile/Zohreh-Karimzadeh>
>>>> Skype Name 49a52224a8b6b38b
>>>> Twitter Account @zohrehkarimzad1
>>>> z.kari...@gmail.com
>>>> +989102116325 <+98%20910%20211%206325>
>>>>
>>>> ((((((((((((((((Value Water)))))))))))))))
>>>>
>>>>
>>>> On Mon, Aug 22, 2022 at 7:42 PM Oscar Benjamin <oscar.j....@gmail.com>
>>>> wrote:
>>>>
>>>>> On Mon, 22 Aug 2022 at 15:36, Peter Stahlecker
>>>>> <peter.st...@gmail.com> wrote:
>>>>> >
>>>>> > Dear Oscar,
>>>>> >
>>>>> > Thanks for your hint about these parameters!.
>>>>> > Probably dumb question of mine:
>>>>> > Could one not define f_Vi_est directly as
>>>>> >
>>>>> > def_Vi_est(gamma, alfa, beta, eta, L, K, VA):
>>>>> > Vi_est = gamma - (1 / eta)…..
>>>>> > return np.sum(…..)
>>>>> >
>>>>> > without any ‚lambdification‘?
>>>>>
>>>>> Yes. In an earlier post the OP showed that they had working code like
>>>>> that but wanted to know how to do it using SymPy and lambdify. I
>>>>> presume there is a reason for wanting to use SymPy there (perhaps to
>>>>> accomplish something slightly different from the exact code shown).
>>>>> It's also possible that there isn't any actual reason to use SymPy for
>>>>> this at all though.
>>>>>
>>>>> --
>>>>> Oscar
>>>>>
>>>>> --
>>>>> You received this message because you are subscribed to the Google
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>>>>> To view this discussion on the web visit
>>>>> https://groups.google.com/d/msgid/sympy/CAHVvXxQJUuZ4tVnECPyWE%3DLd03hhhUB5mqv1bjHcjSNf9WP22Q%40mail.gmail.com
>>>>> .
>>>>>
>>>> --
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>>>>
>>>> <https://groups.google.com/d/msgid/sympy/CA%2B1XYLOMV_i3VJXwwVN7JWnuJ9Wo6ZPhULmC1SOubAfFLt-DBQ%40mail.gmail.com?utm_medium=email&utm_source=footer>
>>>> .
>>>>
>>> --
>>> Best regards,
>>>
>>> Peter Stahlecker
>>>
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>>>
>>> <https://groups.google.com/d/msgid/sympy/CABKqA0YTOzyZkjhnQmKQKQh-Mrc_H_TcmD9FrXObaTadkfLpkQ%40mail.gmail.com?utm_medium=email&utm_source=footer>
>>> .
>>>
>>
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