In case anyone is interested there is a relatively standard algorithm
for constructing mesh for an isosurfaces called marching cubes. For
a while that was patented so there is a marching tetrahedrons analog
but I think the patent issue is expired. Its complicated in that there
are lots of things
1. I would recommend looking at phcpack, it is designed to exploit the
special nature of large polynomial systems, however, supposedly I
believe it is sometimes difficult to compile, I've never used it but
it might be better suited to your problem.
http://www.math.uic.edu/~jan/download.html
2. T
This should work for you
sage: import numpy
sage: a=numpy.loadtxt('my_file.txt')
sage: x_vals=a[:,1]
sage: y_vals=a[:,2]
note that now x_vals and y_vals are numpy arrays. At this point you
have a few ways of
of doing the ftt
Option 1
sage: from numpy import fft
sage: fft.fft(x_xvals)
sage: fft.
You should use the cvxopt-0.9.p1.spkg if you try it. Its slightly
newer than the one in the thread.
Josh
On Nov 17, 11:58 pm, mabshoff <[EMAIL PROTECTED]
dortmund.de> wrote:
> Hello Jack,
>
> On Nov 18, 8:11 am, "Jack O'Connor" <[EMAIL PROTECTED]> wrote:
>
> > I was running into gcc-config err
Hello. I believe the issue is that earlier in the tutorial I had set
sage: RealNumber=float
but I didn't specify to reenter this in the section you were looking
at.
If you enter this before the example it will work fine. The issue is
that as
William indicated, if you do not do this, instead of
acts, say, on 10 elements (groups with
> degree 10?) and list all subgroups of each of these groups. Is there a way
> that I can request this output from sage.
>
> thankful good wishes,
> gk or Renato
>
> On 7/25/07, Joshua Kantor <[EMAIL PROTECTED] > wrote:
>
>
>
Ignore my previous post it was a bit more complicated than it should
have been.
1. Just put the following file
http://sage.math.washington.edu/home/jkantor/cvxopt-0.8.2.p1.spkg
in spkg/standard
2. sage: install_package('cvxopt-0.8.2.p1')
On Aug 2, 11:20 pm, Joshua Kant
Hello,
The problem is that cvxopt does not by default link in gfortran which
apparently your libblas was compiled with.
(Incidentally what distribution is this and are you using custom
compiled blas/atlas or ones from a repository)
To fix this try the following:
1. From your sage directory cd t
Regarding the question about broadcating. Every numpy array has a
shape parameter. By manipulating this you can control how an array of
data is viewed and . A simple example is
sage: import numpy
sage: a=numpy.array(range(8))
sage: a
array([ 0, 1, 2, 3, 4, 5, 6, 7])
sage: a.shape=(2,4)
sag
I am guessing you are intererested in having subgroups of the
permutation group acting on tone rows or something along those lines.
Do you actually need to have the ability to manipulate groups in your
final application or are you using sage to find some set of
interesting groups and only intend
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