On 12/1/10 8:06 PM, akm wrote:
On Dec 1, 3:35 pm, Jason Grout<jason-s...@creativetrax.com> wrote:
You might just use matplotlib directly in Sage:
See, for example,
http://matplotlib.sourceforge.net/examples/pylab_examples/date_demo_c...
http://matplotlib.sourceforge.net/examples/pylab_examples/date_demo1....
or just look in the gallery:http://matplotlib.sourceforge.net/gallery.html
Thanks for the ideas; that first date demo bombs out on me with this
stack trace:
Traceback (most recent call last): date2 = datetime.datetime( 2000,
3, 6)
File "", line 1, in<module>
File "/tmp/tmpq8Gtm6/___code___.py", line 10, in<module>
delta = datetime.timedelta(hours=_sage_const_6 )
TypeError: unsupported type for timedelta hours component:
sage.rings.integer.Integer
The internet suggests that's a numpy bug; Sage reports it's using
numpy version 1.3.0 but numpy is up to 1.5.1
I'm running Sage 4.5; maybe upgrading to 4.6 will help.
It's easy to test it on sagenb.org, which is running 4.6. Here it is on
demo.sagenb.org (which is less busy than sagenb.org):
http://demo.sagenb.org/home/pub/62/
You'll notice that I changed the line
delta = datetime.timedelta(hours=6)
to
delta = datetime.timedelta(hours=int(6) )
You'll also notice that at the end, instead of show(), I used the
savefig command (that's so a graph will show up in the Sage notebook)
That timedelta problem probably won't affect you; it's just used in this
example for constructing some data to plot. You see I also included the
second example from my post in the worksheet. I've also filed a bug
with Sage: http://trac.sagemath.org/sage_trac/ticket/10365
Finally, in that worksheet, you'll see that I tried using a recent
feature of Sage for specifying the formatting of ticks. It required
converting dates to ordinals. That seems like an inconvenient step, so
I've filed an enhancement request with Sage:
http://trac.sagemath.org/sage_trac/ticket/10366
Thanks,
Jason
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