sage-support Google Group

Re: [sage-support] Re: using the system version of Python from the sage notebook?

2009-11-30T02:40:22Z

William,
Patch 11 of GAP 4.4 fixes a dozen of critical level bugs, ie bugs
that potentially lead to wrong results! Eg getting wrong character
tables, wrong results in range intersection...
If a platform, like Itanium, was dropped, it is likely for a jolly good reason.

IMHO distributing a clearly buggy version is a very bad idea.

Re: [sage-support] No wiki in compiled sage

2009-11-30T02:15:28Z

On Thu, Nov 26, 2009 at 5:27 AM, Surendran Karippadath

Hi,

I'm sorry that nobody has responded to you about this yet. The
moinmoin support in Sage has languished. All the wiki() command in
Sage does is setup a moinmoin wiki install that is run on top of
Twisted. You could just try directly installing moinmoin and reading

Re: [sage-support] plot3d doesn't display.

2009-11-30T01:28:40Z

On Sun, Nov 29, 2009 at 4:43 PM, Christopher Olah

No. The first time Sage made any use of jmol, Sage also included it.
I'm guessing that when you installed jmol your package manager installed
some dependency of jmol (e.g. java), which made Sage's copy of jmol work.

William

abs exp simplify bug

2009-11-30T01:06:36Z

var('y', domain='real')
assume(y, 'real')

abs(exp(y*I)).simplify()
1

abs(exp(1.1*y*I)).simplify()
e^(1.1*I*y)

The last result is incorrect. It seems simplify() doesn't like
floating point?

Re: [sage-support] plot3d doesn't display.

2009-11-30T00:43:49Z

That's interesting: I've had problems where it didn't work and I had
to install Jmol myself. Is this a recent change?

Re: [sage-support] plot3d doesn't display.

2009-11-29T23:43:27Z

On Sun, Nov 29, 2009 at 11:50 AM, Christopher Olah

Jmol comes with Sage, so Jmol is always installed. However, you need
Java to run Jmol.
Sage doesn't fallback to anything if Jmol doesn't work (I wish Sage
did fallback).

William

Re: [sage-support] using the system version of Python from the sage notebook?

2009-11-29T23:22:58Z

As a test, you can get this behavior right now as follows.

1. Execute the following in an input cell:

S = Sage(python=True, preparse=False)
S._Expect__command = "sage-native-execute /usr/bin/python -u"
python = S

2. Then select "python" from the list of systems.

A similar trick should work for using the system-wide GAP... it might

Re: [sage-support] Re: using the system version of Python from the sage notebook?

2009-11-29T23:13:02Z

Can you test if this will actually work by modifying the file

SAGE_ROOT/local/bin/gap

in your Sage install in the natural way?

For quite a while we had to patch GAP so that it would work with the
Sage interface.

I'm curious -- what in particular is broken about GAP-4.4.10? We
tried to ship 4.4.12, but found it to be "more broken"; in particular,

Re: How to import Python modules into Sage?

2009-11-29T21:14:43Z

You can also set the path inside the notebook itself by appending to
sys.path.

Tom

Re: plot3d displays NOW !

2009-11-29T21:13:07Z

The graphic display is through an applet in your browser; for that to
display, your browser needs to be capable of displaying applets, and
for that you need to install Java. Sage can't do that for you (it
doesn't ship with its own copy of Firefox either).

Re: [sage-support] plot3d displays NOW !

2009-11-29T21:09:54Z

This is the right reason :

It's perfect.

So Sage contains the other computer algebra systems, but calls other
programs for graphic display.

Re: using the system version of Python from the sage notebook?

2009-11-29T21:05:34Z

If you could use the system Python, that would fix that problem too,
wouldn't it?

Tom

Re: [sage-support] plot3d doesn't display.

2009-11-29T20:25:07Z

Christopher Olah ha scritto:
As far as I remember, with Ubuntu, the right package is
apt-get install icedtea6-plugin
At least, on my computer this (or one of its dependencies) makes plot3d
work on Firefox. (Jaunty and Karmic)

Hope that helps
have a good night

Laurent

Re: How to import Python modules into Sage?

2009-11-29T20:04:46Z

Hello Alex,

regarding this topic, look at these two threads:

[link]

Georg

Re: [sage-support] SIGSEGV ERROR

2009-11-29T19:50:32Z

Hi Roland,

On Sun, 29 Nov 2009 11:46:00 -0800 (PST)

Can you post the exact sequence of commands leading up to this message?

It would be great if you also provide some more information.

What version of Sage are you using? On which platform? Did you compile
it from source?

Thanks.