On Wed, Feb 11, 2009 at 7:13 PM, Nick Alexander <ncalexan...@gmail.com> wrote:
>
>> Indeed, it was a oneliner:
>>
>> diff -r b0aa7ef45b3c sage/server/notebook/user_conf.py
>> --- a/sage/server/notebook/user_conf.py Mon Jan 05 23:03:45 2009 -0800
>> +++ b/sage/server/notebook/user_conf.py Wed Feb 11 08:58:59 2009 -0800
>> @@ -4,7 +4,7 @@
>> import conf
>>
>> defaults = {'max_history_length':500,
>> - 'default_system':'sage',
>> + 'default_system':'python',
>> 'autosave_interval':3*60, # (in seconds)
>> 'default_pretty_print': False
>> }
>>
>>
>> Is there some better way, so that I don't have to modify Sage sources?
>
> You could monkey patch it from init.sage (you don't want to see my
> init.sage):
>
> import sage.server.notebook.user_conf
> sage.server.notebook.user_conf.defaults['default_system'] = 'python'
Thanks for the tip, I'll try it.
So I got our software running in Sage over the web! Here is a very
simple example:
http://nb.hpfem.org:8000/home/pub/5/
It uses a mesh, that I uploaded to the worksheet, and then it loads it
into our C++ code. That's it. I had to disable more interesting stuff,
because it was depending on umfpack, but I had some problems
installing it in Sage, and it is not needed anyway, as I want to use
scipy.sparse for solving stuff, or pysparse, or pets4py or slepc4py,
but I want to call it from Python, not from C++.
So I need to work on this more to get everything polished, but now I
can see that it will work.
Great job with the notebook, it's exactly what I need!
I have couple questions:
1) how can I change what gets imported by default in an empty
worksheet? I use Python mode, but sage still gets imported and it
polutes the namespace. :)
2) How can I get better tracebacks when something goes wrong? Example:
import hermes2d
m = hermes2d.Mesh()
m.load()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/ondrej/nbfiles/worksheets/ondrej/0/code/7.py", line 6, in <module>
print _support_.syseval(python, ur'''m.load()''',
'/home/ondrej/nbfiles/worksheets/ondrej/0/cells/12')
File
"/home/ondrej/ext/sage-3.2.3-Debian4.0-32bit-Intel-i686-Linux/local/lib/python2.5/site-packages/sage/server/support.py",
line 323, in syseval
return system.eval(cmd)
TypeError: eval() takes at least 3 arguments (2 given)
The m.load() expects one parameter, I didn't give it any, but it is
not apparent from the tracebakc what went wrong.
3) I want to use matplotlib for plotting, or maybe some other library,
in any case the result will be a png image. Here are couple examples
how it can be used in the notebook:
http://nb.hpfem.org:8000/home/pub/2/
http://nb.hpfem.org:8000/home/pub/3/
http://nb.hpfem.org:8000/home/pub/4/
Slide to the bottom of the page to see the image. However, I noticed
with this approach, that if I update the plotting commands and
regenerate the .png image, the result gets messed up sometimes and I
had to stop the worksheet, restart it and reevaluate all cells again,
then it works. Is this a known problem? What is the workaround?
I am impressed how usable the notebook is.
Ondrej
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