Public bug reported:

Binary package hint: octave-vrml

octave:8> s1 = vrml_cyl (xx1, "col",k)
error: invalid conversion from NaN to logical
error: called from:
error:   /usr/share/octave/packages/3.2/vrml-1.0.11/vrml_material.m at line 45, 
column 1
error:   /usr/share/octave/packages/3.2/vrml-1.0.11/vrml_cyl.m at line 99, 
column 12

also can be reproduced by running
/usr/share/octave/packages/3.2/vrml-1.0.11/vrml_demo_tutorial_4.m.

Can be fixed by changing

 if tran && !isnan (tran)

to

 if !isnan (tran) && tran

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: octave-vrml 1.0.11-1 [modified: 
usr/share/octave/packages/3.2/vrml-1.0.11/vrml_material.m]
ProcVersionSignature: Ubuntu 2.6.38-9.43-generic 2.6.38.4
Uname: Linux 2.6.38-9-generic x86_64
Architecture: amd64
CheckboxSubmission: 2892cad67f71a4db0df94c8bed57c940
CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f
Date: Tue May 24 10:43:44 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=de_DE:en
 PATH=(custom, user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: octave-vrml
UpgradeStatus: Upgraded to natty on 2011-04-14 (39 days ago)

** Affects: octave-vrml (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug natty running-unity

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https://bugs.launchpad.net/bugs/787412

Title:
  error: invalid conversion from NaN to logical

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