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

 
 

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

Submitter:  Juan Pablo Carbajal <juanpi>
Submitted:  Sun 08 Dec 2019 10:32:39 AM UTC
   
 
Category:  Octave 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
Fixed Release:  None Planned Release:  None
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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>
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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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