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[Octave-bug-tracker] [bug #53576] Symbolic pkg dsolve now not woeking
From: |
Doug Stewart |
Subject: |
[Octave-bug-tracker] [bug #53576] Symbolic pkg dsolve now not woeking |
Date: |
Fri, 6 Apr 2018 12:24:40 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36 |
URL:
<http://savannah.gnu.org/bugs/?53576>
Summary: Symbolic pkg dsolve now not woeking
Project: GNU Octave
Submitted by: dastew
Submitted on: Fri 06 Apr 2018 04:24:39 PM UTC
Category: Octave Forge Package
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Regression
Status: None
Assigned to: None
Originator Name: Doug Stewart
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 4.2.2
Operating System: GNU/Linux
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Details:
running this code from octave wiki symbolic demos now fails.
syms y(x)
de =diff(y, 3 ) +sqrt(2)*diff(y,2) + diff(y) == 0;
f = dsolve(de, y(0) == 0, diff(y,1)(0) == 0 , diff(y,2)(0) == 1)
ff=function_handle(rhs(f))
x1=0:.01:10;
y=ff(x1);
plot(x1,y)
grid minor on
with this error:
OctSymPy v2.6.0: this is free software without warranty, see source.
Initializing communication with SymPy using a popen2() pipe.
Some output from the Python subprocess (pid 3852) might appear next.
Python 3.5.2 (default, Nov 23 2017, 16:37:01)
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> >>>
OctSymPy: Communication established. SymPy v1.1.1.
>> testsym111
warning: passing floating-point values to sym is dangerous, see "help sym"
warning: called from
double_to_sym_heuristic at line 50 column 7
sym at line 373 column 13
mtimes at line 65 column 5
mtimes at line 61 column 5
testsym111 at line 18 column 6
error: Python exception: NotImplementedError: CRootOf is not supported over
EX
occurred at line 2 of the Python code block:
sol=sp.dsolve(ode)
error: called from
python_cmd at line 179 column 7
dsolve at line 200 column 10
testsym111 at line 19 column 4
>>
I am using ubuntu 16.04
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- [Octave-bug-tracker] [bug #53576] Symbolic pkg dsolve now not woeking,
Doug Stewart <=