Thank you to all of you!
On Sep 15, 12:59 pm, Simon King wrote:
> PS:
>
> > sage: cm.explain(QQ, b.parent())
>
> I forgot to copy-and-paste the definition of "cm". It was:
>
> sage: from sage.structure.element import get_coercion_model
> sage: cm = get_coercion_model()
>
> Cheers,
> Simon
On Thu, 15 Sep 2011 at 06:40AM -0700, kcrisman wrote:
> On Sep 15, 9:08 am, Dan Drake wrote:
> > This is strange:
> >
> > x, y =var('x y')
> > plot3d(sqrt(x^2+y^2)*sin(1/sqrt(x^2+y^2)), (x,-1/2, 1/2), (y, -1/2, 1/2),
> > adaptive=True)
> >
> > fails with "ValueError: cannot convert float NaN to i
PS:
>sage: cm.explain(QQ, b.parent())
I forgot to copy-and-paste the definition of "cm". It was:
sage: from sage.structure.element import get_coercion_model
sage: cm = get_coercion_model()
Cheers,
Simon
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Hi all,
new release of our free soft (OpenOpt, FuncDesigner, DerApproximator,
SpaceFuncs) v. 0.36 is out:
OpenOpt:
Now solver interalg can handle all types of constraints and
integration problems
Some minor improvements and code cleanup
FuncDesigner:
Interval analysis now can involv
Also:
sage: T = Cylindrical('height', ['radius', 'azimuth'])
sage: r, theta, z = var('r theta z')
sage: plot3d(r*sin(1/r), (r, 0.0, 0.2), (theta, 0, 2*pi),
transformation=T,adaptive=True)
Andrzej Chrzeszczyk
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On Thu, Sep 15, 2011 at 7:10 PM, kcrisman wrote:
>
>
> On Sep 15, 9:08 am, Dan Drake wrote:
>> This is strange:
>>
>> x, y =var('x y')
>> plot3d(sqrt(x^2+y^2)*sin(1/sqrt(x^2+y^2)), (x,-1/2, 1/2), (y, -1/2, 1/2),
>> adaptive=True)
>>
>> fails with "ValueError: cannot convert float NaN to integer"
On Sep 15, 9:08 am, Dan Drake wrote:
> This is strange:
>
> x, y =var('x y')
> plot3d(sqrt(x^2+y^2)*sin(1/sqrt(x^2+y^2)), (x,-1/2, 1/2), (y, -1/2, 1/2),
> adaptive=True)
>
> fails with "ValueError: cannot convert float NaN to integer". Something
> goes wrong when it partitions up the domain, pr
On Thu, Sep 15, 2011 at 4:56 PM, Andrew Francis wrote:
> Hi all,
>
> I'm new to this group; thanks for having me.
>
> I have generated a large number of text files (several lots of 81
> files) with the intention of reading them back into another sage
> program (via the command line). The text fil
This is strange:
x, y =var('x y')
plot3d(sqrt(x^2+y^2)*sin(1/sqrt(x^2+y^2)), (x,-1/2, 1/2), (y, -1/2, 1/2),
adaptive=True)
fails with "ValueError: cannot convert float NaN to integer". Something
goes wrong when it partitions up the domain, probably when it looks at
the origin. Is there a way to
On Thu, Sep 15, 2011 at 6:23 PM, Rajeev Singh wrote:
> On Thu, Sep 15, 2011 at 4:56 PM, Andrew Francis wrote:
>> Hi all,
>>
>> I'm new to this group; thanks for having me.
>>
>> I have generated a large number of text files (several lots of 81
>> files) with the intention of reading them back int
Hi Volker,
On 15 Sep., 11:45, Volker Braun wrote:
> b in QQ is (or should be) equivalent to QQ(b) not throwing an error.
No, that's incorrect. It should be (and is) equivalent to QQ(b)==b
returning True.
QQ(b) is just a conversion. You can convert any element of a finite
prime field into QQ:
Hi all,
I'm new to this group; thanks for having me.
I have generated a large number of text files (several lots of 81
files) with the intention of reading them back into another sage
program (via the command line). The text filenames were generated by
the line
outputfilename="Dropbox/simda
Hi
I have the same problem. I am using sage 4.6 installed on windows
vista. This is part of code I have written in sage. Is there anyway I
can catch this error and make an exception?
Thanks
On Sep 13, 9:49 am, vasu wrote:
> Hi
> Thanks for the reply.
> I am also using Sage 4.7.1 installed
On Thu, Sep 15, 2011 at 12:07 PM, Robert Bradshaw
wrote:
> On Wed, Sep 14, 2011 at 2:31 AM, Rajeev Singh wrote:
>> Hi,
>>
>> The following examples compiles from the notebook
>>
>> %cython
>> cimport sage.gsl.ode
>> import sage.gsl.ode
>> include 'gsl.pxi'
>>
>> cdef class van_der_pol(sage.gsl.od
A colon is missing after range(20).
The following version works for me:
(but the indentation in this post may be broken)
x,y,z,t = var('x,y,z,t')
P = implicit_plot3d(x^2 +y^2 -z^2 ==1, (x,-3.2,3.2),(y,-3.2,3.2),
(z,-3,3),opacity=.2,color='blue')
for k in range(20):
P += parametric_plot3d([cos(
b in QQ is (or should be) equivalent to QQ(b) not throwing an error. But if
that fails, it only means that Sage can't convert it to a rational directly,
it is perfectly possible that after a series of (computationally expensive)
steps one could transform b into a rational. But if we would always
> For trivial cases, yeah, but consider
>
> parametric_plot((f(t-0.5j).real, f(t-0.5j).imag), (t,tmin,tmax))
>
> parametric_plot(ReIm(f(t-0.5j)), (t,tmin,tmax))
>
> --
For example:
sage: f(z)=[z.real(),z.imag()]
sage: t=var('t')
sage: parametric_plot(f(exp(I*(t-5*I))),(t,0,2*pi))
On 2011-9-14 23:35, Robert Bradshaw wrote:
... Otherwise, z.real, z.imag is probably going to
be as fast as you can get, and there's no need to define a function,
you could just write
sage: a = complex(3,4)
sage: x, y = a.real, a.imag
For trivial cases, yeah, but consider
parametric_p
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