Scipy library

[romain.j...@gmail.com]

Hi,

I would like to run a script using a scipy function : fsolve. Is it possible or this library is not available on qpython?

[QPython Support]

Dear User,

Scipy function is available on qpython you just have have to install it from QPYPI.

QPYTHON TEAM

On Mon, Jun 11, 2018 at 5:39 PM, <romain.j...@gmail.com> wrote:

Hi,

I would like to run a script using a scipy function : fsolve. Is it possible or this library is not available on qpython?

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[romain.j...@gmail.com]

Thank you very much for your answer,

I have tested fsolve function with a simple equation and it works perfectly.

I am now trying something a bit more complicated with a resolution of a system of non-linear equations using finite difference scheme. (my aim is to solve this kind of system with 100 equations)

It is not working when there are more than 3 equations: N>3 (considering that first and last equations are boundary conditions..)

Although the code is working perfectly on my computer, when I run it on qpython on my phone (samsung galaxy A5 2017) X[i] becomes NaN during the process.

I thought it could be a problem linked to the size of the floats so I changed everything in float16 but it didn't fix it.

Any idea?

My code :

from scipy.optimize import fsolve

import numpy as np

B=[0]*4

B=np.float16(B)

def func(X):

X=np.float16(X)

N=4

Bsup = 2

Binf = 0

dx=(Bsup-Binf)/(N-1)

dx=np.float16(dx)

Phi=[0]*N

for i in range (1,N-1):

Phi[i]=(X[i-1]-2*X[i]+X[i+1])/dx**2 - X[i]**2

print(X[i])

Phi[0]=X[0]-1

Phi[N-1]=X[N-1]-5

Phi=np.float16(Phi)

return Phi

[A,infodict,ier,mesg]=fsolve(func,B,xtol=1e-5,maxfev=10000,full_output=1)

print(A)

print(infodict)  

[QPython Support]

Dear User,

Can you send us the screenshot of the code so we can see what kind of error it is showing.

QPYTHON TEAM

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[romain.j...@gmail.com]

Here is the code and the output on the console.

[QPython Support]

Dear User,

Please stay tuned as our Team will look into your problem and will give you a suitable answer as soon as possible.

Thank you for your patience

QPYTHON TEAM

On Wed, Jun 13, 2018 at 1:04 PM, <romain.j...@gmail.com> wrote:

Here is the code and the output on the console.

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[romain.j...@gmail.com]

Any news ? 

Le vendredi 15 juin 2018 09:31:51 UTC+2, QPython Lab a écrit :

Dear User,

Please stay tuned as our Team will look into your problem and will give you a suitable answer as soon as possible.

Thank you for your patience

QPYTHON TEAM

On Wed, Jun 13, 2018 at 1:04 PM, <romain.j...@gmail.com> wrote:

Here is the code and the output on the console.

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