The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » Inactive » comp.soft-sys.math.mathematica

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: FindCurvePath has a problem
Replies: 1   Last Post: Jul 20, 2012 11:43 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View  
Oliver Ruebenkoenig

Posts: 237
Registered: 6/28/08
Re: FindCurvePath has a problem
Posted: Jul 20, 2012 11:43 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

On Fri, 20 Jul 2012, Ralph Dratman wrote:

> The following input to FindCurvePath produces the output shown below it:
> FindCurvePath[{{278,141},{279,141},{279,142},{279,143},{280,143},{280,144},
> {280,145},{280,146},{281,147},{281,148},{281,149},{281,150},{282,150},{282,
> 151},{282,152},{283,151},{283,152},{283,153},{284,153},{284,154},{285,155},
> {286,155},{286,156},{287,156},{287,157},{288,157},{289,156},{290,156},{290,
> 157},{291,156},{291,157},{292,156},{292,157},{293,156},{293,157},{294,156},
> {294,157},{295,156},{295,157},{296,156},{296,157},{297,156},{297,157},{298,
> 155},{298,156},{299,155},{299,156},{300,155},{301,154},{301,155},{302,153},
> {302,154},{303,152},{303,153},{304,150},{304,151},{304,152},{305,149},{305,
> 150},{306,146},{306,147},(*{306,148},{306,149},{307,144},{307,145},{307,146
> },{308,141},{308,142},{308,143},{308,144},{309,139},{309,140},{309,141},{31
> 0,138},{310,139},{311,136},{311,137},{311,138},{312,135},{312,136},{313,134
> },{313,135},*){314,133},{314,134}}]
> FindCurvePath::ntri: The data generates an inconsistent
> triangulation. You can perturb the data to make it valid. >>
> Fail
> If you restore the commented-out list elements (beginning with
> (*{306,148}...), then evaluate, you get an apparently never-ending
> silent hangup, which is of course far worse than an error message.
> I have not yet tried to "perturb" anything to work around the problem.
> Clearly the function needs to check its arguments before wandering off
> into lala land.
> Ralph Dratman

The only oddity is that it returns Fail in stead of $Failed, other than
that works on Linux-x86-64 V8.0.4. What version/OS do you have?


Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.