bugGNU Octave - Bugs: bug #57382, [octave forge] (symbolic) fplot...

 
 

bug #57382: [octave forge] (symbolic) fplot not working with syms

Submitted by:  Juan Pablo Carbajal <juanpi>
Submitted on:  Sun 08 Dec 2019 10:32:39 AM UTC  
 
Category:  Octave Forge Package Severity:  1 - Wish
Priority:  3 - Low Item Group:  Feature Request
Status:  Confirmed Assigned to:  None
Originator Name:  juanpi Open/Closed:  Open
Release:  dev Operating System:  GNU/Linux

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Tue 21 Jan 2020 11:21:55 AM UTC, comment #1: 

Thanks!  I added it to this "nice to have" list:

https://github.com/cbm755/octsympy/issues/215

Probably this is a fairly straightforward fix: if anyone wants to tackle this, look at `@sym/ezplot` and friends for example.

Colin Macdonald <cbm>
Sun 08 Dec 2019 10:32:39 AM UTC, original submission:  

The Matlab function fplot works with symbolic functions as well.
For example, this code

syms x
f(x)=x^2;
fplot(f(x))

plots the parabola on the dafault [-5,5] interval.

symbolic 2.8.0 on GNu Octave 5.1.1 produces

error: isalnum: not defined for class
error: called from
    fplot at line 100 column 3

Juan Pablo Carbajal <juanpi>
Project Member

 

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    Follow 6 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2020-02-05 mtmiller Severity3 - Normal => 1 - Wish
        Priority5 - Normal => 3 - Low
        Item GroupMatlab Compatibility => Feature Request
        StatusNone => Confirmed
        Releaseother => dev
        Summary[octave forge](symbolic) fplot not working with syms => [octave forge] (symbolic) fplot not working with syms

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