Comment #6 on issue 3311 by jari-pek...@kolumbus.fi: SymPy is lacking a
expressiontree facility / creator
http://code.google.com/p/sympy/issues/detail?id=3311
SymPy interface to Axiom CAS would also be possible to use in integrations
and symbolic manipulation if SymPy has one.
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You
Am Dienstag, 3. Juli 2012 11:09:27 UTC+2 schrieb Stefan Krastanov:
The one exception is code inside sympy which was agreed at some point,
should not require more than a python interpreter. However, if you are
using nsolve with lambdify you are again doing it wrong, because the
only
Am Dienstag, 3. Juli 2012 22:00:41 UTC+2 schrieb Ondřej Čertík:
There is a difference between calling matplotlib, numpy or scipy,
and having a working fortran or C compiler working at your machine.
In particular, in scipy ODE, you can provide a simple Python function
to get the ODE
Is it possible to accomplish this using an out parameter? This would still
be useful to me.
On Monday, January 23, 2012 2:20:50 PM UTC-5, Gustavo wrote:
Right now it returns a float. I'd like an NumPy array, so maybe I
can create the NumPy array with the correct size and row/column
It would be nice if SymPy could do this. I'm unfortunately not very
familiar with the code generation module. If it's not possible now then we
should make an issue for it.
Alternatively you could take a look at the theano
projecthttp://deeplearning.net/software/theano/.
They optimize and generate
On a semi-related note I think it'd be awesome if SymPy created a Theano
code generator. Our two projects are related and I think that there is
something to be gained by cooperation. We optimize and simplify expressions
in semi-orthogonal ways.
On Fri, Jul 6, 2012 at 10:45 AM, Matthew Rocklin
It seems sympy can not integrate sqrt(sin(x)).
I did the following:
import sympy as sm
from sympy.abc import x,y,z
tointegrate=sm.sqrt(sm.sin(y))
sm.integrate(tointegrate)
output is : Integral(sqrt(sin(y)), y)
After a simple change of variable the integral is doable:
def ytoz(z):
Am Dienstag, 3. Juli 2012 19:16:37 UTC+2 schrieb Joachim Durchholz:
Am 01.07.2012 22:48, schrieb Sergiu Ivanov:
[0] http://pypi.python.org/pypi/ordereddict
We want key order.
OrderedDict remembers insertion order, so it's close but doesn't match.
There is a pure Python implementation
Hi,
I agree that more cooperation would be great. Up to now the problem on
our side is time to look at SymPy.
I'm going to SciPy in ~1 week in Texas. I was under the impression
there was a tutorial/talk about SimPy There, but I don't find it
anymore. Is it a sprint? The sprints list is not on
On Jul 6, 2012, at 12:41 PM, Frédéric Bastien no...@nouiz.org wrote:
Hi,
I agree that more cooperation would be great. Up to now the problem on
our side is time to look at SymPy.
I'm going to SciPy in ~1 week in Texas. I was under the impression
there was a tutorial/talk about SimPy There,
On Thu, Jul 5, 2012 at 7:48 PM, Chris Smith smi...@gmail.com wrote:
On Thu, Jul 5, 2012 at 5:56 PM, Andrew zxwand...@gmail.com wrote:
Hi, I am very new to sympy and python, so pardon my simple question
I have a matrix right here like this (4 equations, 3 unknowns)
mat1=
[ 0,15.0, 10.0,
Am 03.07.2012 20:34, schrieb Sergiu Ivanov:
On Tue, Jul 3, 2012 at 8:16 PM, Joachim Durchholz j...@durchholz.org wrote:
Am 01.07.2012 22:48, schrieb Sergiu Ivanov:
[0] http://pypi.python.org/pypi/ordereddict
We want key order.
OrderedDict remembers insertion order, so it's close but
WolframAlpha gives an answer in terms of an elliptic integral:
http://www.wolframalpha.com/input/?i=integrate(sqrt(sin(x)),%20x)
So I imagine that if we added those that we would be able to compute this.
Aaron Meurer
On Fri, Jul 6, 2012 at 10:00 AM, pallab pallabb...@gmail.com wrote:
It
The problem I see is *how* to add these to the integration routines.
There is no nice Meijer-G representation. And I suppose that Risch
can not handle these. At least not w/o major extensions.
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But if Pallab's answer is correct, then it can be, right, at least for
this specific one?
Aaron Meurer
On Fri, Jul 6, 2012 at 3:03 PM, rl someb...@bluewin.ch wrote:
The problem I see is *how* to add these to the integration routines.
There is no nice Meijer-G representation. And I suppose that
According to http://en.wikipedia.org/wiki/Elliptic_integral, every
elliptic integral can be reduced to an expression containing only the
three Legendre canonical forms. So I wonder if that is algorithmic.
Aaron Meurer
On Fri, Jul 6, 2012 at 4:08 PM, Aaron Meurer asmeu...@gmail.com wrote:
But
The answer seems to be wrong.
I do the following to numerically integral evaluation:
import numpy as np
import scipy as sp
import scipy.integrate
f=lambda x:np.sqrt(np.sin(x))
sp.integrate.quad(f,0.6,0.7)
get the following value:
0.07776347731181982
which matches with mathematica.
whereas
By answer wrong I mean the answer given by sympy,
On Friday, July 6, 2012 10:06:57 PM UTC-4, pallab wrote:
The answer seems to be wrong.
I do the following to numerically integral evaluation:
import numpy as np
import scipy as sp
import scipy.integrate
f=lambda x:np.sqrt(np.sin(x))
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