[Octave-bug-tracker] [bug #31733] error: ppval: expects a pp structure

[Rick T]

URL:
  <http://savannah.gnu.org/bugs/?31733>

                 Summary: error: ppval: expects a pp structure
                 Project: GNU Octave
            Submitted by: ratulloch
            Submitted on: Mon 22 Nov 2010 08:21:01 PM GMT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Rick Tulloch
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.2.3
        Operating System: GNU/Linux

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Details:

error: ppval: expects a pp structure

Greetings All
I run a simple script to test piecewise in matlab and octave
It works in matlab

clear,clc
tic
coefs=[3,-5,1;0,3,-2];
breaks=[0 5 10];
p1=mkpp(breaks,coefs);
xx=linspace(-3,12);
yy=ppval(xx,p1);
plot(xx,yy);

But when the same script is run in octave 3.2.3 I get this error
error: ppval: expects a pp structure
error: called from:
error:   /usr/share/octave/3.2.3/m/polynomial/ppval.m at line 34, column 5

Does anyone have a work around?

aloha




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