I should extract the required model for each system of chemicals and do a
least squre for derived model and parameters to find the parameters for
each chemical systems.
Zohreh Karimzadeh
Contact me on
+989102116325
and at
z.karimza...@gmail.com
🌧️🌍🌱
On Wed, 24 Aug 2022, 19:33 gu...@uwosh.edu, <gu...@uwosh.edu> wrote:
> 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
>>>>>>
>>>>>> --
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>>>>>> send an email to sympy+un...@googlegroups.com.
>>>>>> To view this discussion on the web visit
>>>>>> https://groups.google.com/d/msgid/sympy/CAHVvXxQJUuZ4tVnECPyWE%3DLd03hhhUB5mqv1bjHcjSNf9WP22Q%40mail.gmail.com
>>>>>> .
>>>>>>
>>>>> --
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>>>>> To view this discussion on the web visit
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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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