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2016-10-05 15:06:34 +0200 | commented answer | Axes labels on 3D plots? @eric_g could you please provide a working example of set_axes_labels usage? Thx |
2016-10-05 11:46:49 +0200 | commented answer | plot error: No X11 DISPLAY variable was set |
2016-10-05 11:24:47 +0200 | commented answer | plot error: No X11 DISPLAY variable was set |
2016-10-05 10:24:03 +0200 | asked a question | plot error: No X11 DISPLAY variable was set Hi, I have to make a plot of the following formula x,y=var('x, y')
plot3d((x^2)*y-x*y+x*y^3,0,5)
but I obtain error message /usr/lib64/python2.7/site-packages/sage/plot/plot3d/parametric_plot3d.py\
:704: DeprecationWarning: Unnamed
ranges for more than one variable is
deprecated and will be removed from a
future release of Sage; you can used
named ranges instead, like (x,0,2) See
http://trac.sagemath.org/7008 for
details. g, ranges =
setup_for_eval_on_grid(f,
[urange,vrange], plot_points)
Exception in thread "main"
java.lang.ExceptionInInitializerError
Caused by: java.awt.HeadlessException:
No X11 DISPLAY variable was set, but
this program performed an operation
which requires it. at
sun.awt.HeadlessToolkit.getScreenSize(HeadlessToolkit.java:284)
at
org.openscience.jmol.app.jmolpanel.JmolPanel.<clinit>(JmolPanel.ja\
va:173)
/usr/lib64/python2.7/site-packages/sage/repl/rich_output/display_manager\
.py:570: RichReprWarning: Exception in
_rich_repr_ while displaying object: Jmol failed to create file
'/home/sage/.sage/temp/host/1582/dir_0OP2db/preview.png',
see
'/home/sage/.sage/temp/host/1582/tmp_4sBlqC.txt'
for details RichReprWarning,
Graphics3d Object</clinit> |
2016-09-14 01:41:40 +0200 | received badge | ● Popular Question
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2015-12-30 16:12:07 +0200 | asked a question | Run LCM fractions I am doing some matrix multiplications, and as result I get Now see position 1,1 of the matrix: I want SageMath to return me a result that has only one fraction (using LCM), not two fractions. Which command should I use? |
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2015-09-21 12:03:08 +0200 | asked a question | derivative(5x, x) returns syntax error Since I did not remember the command to do a derivative, I was trying with a very simple formula. Since I did not find the right command on my own, I looked at SageMath guide and then I tried to run the following command derivative(5x, x)
but it returns error Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "_sage_input_22.py", line 10, in <module>
exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("ZGVyaXZhdGl2ZSg1eCwgeCk="),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))
File "", line 1, in <module>
File "/tmp/tmpZWBMYQ/___code___.py", line 2
derivative(5x, x)
^
SyntaxError: invalid syntax
Instead the command from the guide derivative(x^2, x)
works flawlessly. They seem both equal, but mine does not work. Why? |
2015-09-21 11:25:44 +0200 | asked a question | plot((e^-x)5) returns syntax error Could you please tell me why command plot((e^-x)5)
returns error Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "_sage_input_13.py", line 10, in <module>
exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("cGxvdCgoZV4teCk1KQ=="),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))
File "", line 1, in <module>
File "/tmp/tmphGwtBs/___code___.py", line 3
plot((e**-x)_sage_const_5 )
^
SyntaxError: invalid syntax
and why command plot((e^-x))
works flawlessly instead? |
2015-03-27 04:11:40 +0200 | marked best answer | Fedora cert tools I am working on setting up a public Sage server.
I downloaded the 64 bit Sage package for Fedora, then to enable secure mode, I did: ./sage -i openssl ./sage -f python SAGE_UPGRADING=yes make ssl but when trying to start the public notebook....
[sage@PD-2 sage-5.6-linux-64bit-fedora_release_16_verne_-x86_64-Linux]$ ./sage
----------------------------------------------------------------------
| Sage Version 5.6, Release Date: 2013-01-21 |
| Type "notebook()" for the browser-based notebook interface. |
| Type "help()" for help. |
----------------------------------------------------------------------
sage: notebook(automatic_login=False,interface='',secure=True)
The notebook files are stored in: sage_notebook.sagenb
In order to use an SECURE encrypted notebook, you must first run notebook.setup().
Now running notebook.setup()
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call last)
/home/sage/.sage/<ipython console=""> in <module>()
/home/sage/sage-5.6-linux-64bit-fedora_release_16_verne_-x86_64-Linux/devel/sagenb/sagenb/notebook/notebook_object.pyc in __call__(self, *args, **kwds)
221 """
222 def __call__(self, *args, **kwds):
--> 223 return self.notebook(*args, **kwds)
224
225 notebook = run_notebook.notebook_run
/home/sage/sage-5.6-linux-64bit-fedora_release_16_verne_-x86_64-Linux/devel/sagenb/sagenb/notebook/run_notebook.pyc in notebook_run(self, directory, port, interface, port_tries, secure, reset, accounts, openid, server_pool, ulimit, timeout, upload, automatic_login, start_path, fork, quiet, server, profile, subnets, require_login, open_viewer, address)
600 print "In order to use an SECURE encrypted notebook, you must first run notebook.setup()."
601 print "Now running notebook.setup()"
--> 602 notebook_setup()
603 if (not os.path.exists(private_pem) or
604 not os.path.exists(public_pem)):
/home/sage/sage-5.6-linux-64bit-fedora_release_16_verne_-x86_64-Linux/devel/sagenb/sagenb/notebook/run_notebook.pyc in notebook_setup(self)
368
369 if not cmd_exists('certtool'):
--> 370 raise RuntimeError("You must install certtool to use the secure notebook server.")
371
372 dn = raw_input("Domain name [localhost]: ").strip()
RuntimeError: You must install certtool to use the secure notebook server.
|
2015-03-27 04:09:12 +0200 | marked best answer | TypeError: 'sage.rings.integer.Integer' object is not callable I tried to enter into notebook: a=-2 (-((a-1)^2)-((-a-8)(2(a-1))))/((a-1)^4) And I obtained error Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "_sage_input_13.py", line 10, in
<module>
exec compile(u'open("___code___.py","w").write("#
-- coding: utf-8 --\n" + _support_.preparse_worksheet_cell(base64.b64decode("KC0oKGEtMSleMiktKCgtYS04KSgyKGEtMSkpKSkvKChhLTEpXjQp"),globals())+"\n");
execfile(os.path.abspath("___code___.py"))
File "", line 1, in <module>
File "/tmp/tmpF91cWI/___code___.py", line
3, in <module>
exec compile(u'(-((a-_sage_const_1 )_sage_const_2 )-((-a-_sage_const_8
)(_sage_const_2 (a-_sage_const_1
))))/((a-_sage_const_1
)_sage_const_4 ) File "", line 1,
in <module>
TypeError: 'sage.rings.integer.Integer' object is
not callable |
2015-03-27 04:08:53 +0200 | marked best answer | Setting up a public Sage server Hi. I have a desktop computer with an Athlon II X3 440 (probably he will be updated soon with an AMD FX 8350), 32Gb of RAM and Fedora 17 64bit.
I would like to set up a public Sage server on a unprivileged Fedora user.
I am not a security expert, but I need to avoid abuses, so I need suggestions how to secure a public Sage server, where people can sign in from Sage server's webpage and start immediately The wiki page
http://wiki.sagemath.org/SageServer
does not seem to be enough for my needs |
2015-03-27 04:08:49 +0200 | marked best answer | Fedora, pyOpenSSL I am setting up a public Sage server on a Fedora 18 machine (Python version python-2.7.3-13.fc18.x86_64)
To have the possibility to enable the secure mode, I installed pyOpenSSL package from Fedora repositories (pyOpenSSL-0.13-4.fc18.x86_64) , but when I try to start the Sage server, I obtain these error messages: sage: notebook(port=8082,
interface='', secure=True,
accounts=True, ulimit='-v 500000 t
120', automatic_login=False)
-------------------------------------------------------------------------- RuntimeError Traceback (most recent
call last) /home/user/sage/sage-5.5-linux-64bit-fedora_release_16_verne_x86_64-Linux/<ipython console=""> in <module>() /home/user/sage/sage-5.5-linux-64bit-fedora_release_16_verne_-x86_64-Linux/devel/sagenb/sagenb/notebook/notebook_object.pyc
in _call_(self, args, *kwds) 221 """
222 def _call_(self, args, *kwds):
-> 223 return self.notebook(args, *kwds) 224 225 notebook = run_notebook.notebook_run /home/dna/sage/sage-5.5-linux-64bit-fedora_release_16_verne_x86_64-Linux/devel/sagenb/sagenb/notebook/run_notebook.pyc
in notebook_run(self, directory, port,
interface, port_tries, secure, reset,
accounts, openid, server_pool, ulimit,
timeout, upload, automatic_login,
start_path, fork, quiet, server,
profile, subnets, require_login,
open_viewer, address) 476 import
OpenSSL 477 except ImportError:
-> 478 raise RuntimeError("HTTPS cannot be used without pyOpenSSL" 479
" installed. See the Sage README for
more information.") 480 RuntimeError: HTTPS cannot be used
without pyOpenSSL installed. See the
Sage README for more information. |
2015-01-06 01:52:38 +0200 | received badge | ● Popular Question
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2014-07-17 09:47:51 +0200 | commented answer | Condition of type: SIMPLE-CONDITION how can I send it to you privately? I cannot find a private message button on ask.sagemath.org |
2014-07-16 21:37:13 +0200 | commented answer | Condition of type: SIMPLE-CONDITION "my Sagemath's server web interface", I mean I am running sage, then notebook() on a remote server your and I connect to with a browser. |
2014-07-16 16:18:33 +0200 | asked a question | Condition of type: SIMPLE-CONDITION Executing limit(((x^(2*x)-2*factorial(x)+x*log(x,10))^((x^(2*x))/factorial(x)))/(x^(((2*x)^(2*x))/(factorial(x-1)))),x=infinity)
on my Sagemath's server web interface, I obtain: Condition of type: SIMPLE-CONDITION
Undefined limit product $INFINITY * $ZEROA in lim-times
Available restarts:
1. (CONTINUE) Return from BREAK.
Top level in: #<process TOP-LEVEL>.
>
What can I do? 'Sage Version 6.1.1, Release Date: 2014-02-04' |
2014-07-16 16:15:31 +0200 | commented answer | Syntax error on limit Hi, thank you for the exhaustive answer. Concerning `2n!` I don't know, I simply saw it as is, in the pdf of the professor.
Concerning SageMath version, I edited my post.
The command was executed on my Sagemath's server web interface. |
2014-07-16 16:15:02 +0200 | marked best answer | Syntax error on limit I would like to execute limit(((n^(2n)-2n!+n*log(n,10))^((n^(2n))/(n!)))/(n^(((2n)^(2n))/((n-1)!))),n=infinity)
but I obtain the well-known big huge error message with painful infos inside. I cannot manage to fix the error, since I do not understand what is. Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "_sage_input_19.py", line 10, in <module>
exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("bGltaXQoKChuXigybiktMm4hK24qbG9nKG4sMTApKV4oKG5eKDJuKSkvKG4hKSkpLyhuXigoKDJuKV4oMm4pKS8oKG4tMSkhKSkpLG49aW5maW5pdHkp"),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))
File "", line 1, in <module>
File "/tmp/tmpe9jdup/___code___.py", line 3
limit(((n**(2n)-2n!+n*log(n,_sage_const_10 ))**((n**(2n))/(n!)))/(n**(((2n)**(2n))/((n-_sage_const_1 )!))),n=infinity)
^
SyntaxError: invalid syntax
'Sage Version 6.1.1, Release Date: 2014-02-04' |
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