Octave: symbolic 2.2.3 released

[Constantine Frangos]

Hi All,

I have Octave 3.8 running on a linux 64 bit machine, and 
have managed to install SymPy 0.7.4.1.

What is the correct version of the symbolic toolbox for the above
and how do I specify this from the Octave command line when
installing ?

octave:1> pkg install -forge symbolic  ?

The above command currently produces the error:

configure: error: SymPy version 0.7.5 or later is required
checking for sort... /usr/bin/sort
checking for GNU coreutils... yes
checking for python... /usr/bin/python
checking python module: sympy... yes
checking for SymPy version... 0.7.4.1
checking for gawk... gawk

pkg: error running the configure script for symbolic.
error: called from 'configure_make' in file 
/usr/share/octave/3.8.1/m/pkg/private/configure_make.m near line 72, column 9
error: called from:
error:   /usr/share/octave/3.8.1/m/pkg/private/install.m at line 206, column 5
error:   /usr/share/octave/3.8.1/m/pkg/pkg.m at line 394, column 9
octave:1> 


Thanks.

Regards, 
Constantine.


----- Original Message -----
From: "Doug Stewart" <address@hidden>
To: "karl" <address@hidden>
Cc: "Help GNU Octave" <address@hidden>
Sent: Sunday, November 29, 2015 12:59:50 AM
Subject: Re: symbolic 2.2.3 released







On Sat, Nov 28, 2015 at 2:23 AM, Doug Stewart < address@hidden > wrote: 






















































Thanks for the work and the new version! 
I have a question: is there a sort of tutorial/manual with some examples for 
the commands? 

Thanks 
Karl 




http://wiki.octave.org/Symbolic_package 


I put these there for you to play with. 
If there are other commands that you want a demo for, just ask here and I will 
help you if i can!!! 





-- 
@Karl, was that helpful? 


Please help us make the wiki better by giving us feed back. 







DAS 





-- 



DAS 

Doug, thanks, I knew this page already, but for many functions only the 
definition is given, i.e. h = ezplot3 ( f1 , f2 , f3 ). Here one has to try out 
how it works, a simple 
one-line example to get it working and then to play around would be very 
helpful. Maybe some people can see it easily how to use these functions, but I 
often need an example to 
get me going. 














I see this but I don't see the connection with symbolic. There is the reference 
to non-symbolic ezplot3 where I see this 
example with no symbolic functions. 

OK I get your point! 
I will make a demo. probable take me 2-3hrs as i am doing other things also. 








Here is a simple demo I hope it helps. 
There are other ways to do this --- this is just one try. 



syms t 
t=.1:.01:5; 
x=function_handle(sym("t**2")) 
y=function_handle(sym("t/0.33")) 
z=function_handle(sym("cos(t) +sin(t)*cos(t) +t")) 
ezplot3(x,y,z) 












This example that I made is actually very bad!!! 


This is much better 


syms t 
x=t**2 
y=t 
z=cos(t)**2 +sin(t)*cos(t) +t/100 
ezplot3(x,y,z,[0 10],55) 




the term [0 10] is the range that is used for t 
and the 55 is the number of points to make in that range. 









-- 



DAS 


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