Re: Functions don't evaluate
- To: mathgroup at smc.vnet.net
- Subject: [mg34134] Re: Functions don't evaluate
- From: "Allan Hayes" <hay at haystack.demon.co.uk>
- Date: Sun, 5 May 2002 04:48:41 -0400 (EDT)
- References: <ab07sb$1tl$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Yaroslav,
Could it be that you have tried to use a function fn before loading the
package ijn which it is defined?
If so, even after loading the package, the function will not work; but it
will work after entering Remove[fn].
I get the following with your input
In[13]:=
<<DiscreteMath`ComputationalGeometry`
In[14]:=
ConvexHull[{{0,0},{1,0},{0,0},{2,0},{1,1}}]
ConvexHull::duplicated: 1 duplicated points ignored.
Out[14]=
{4,5,1,2}
--
Allan
---------------------
Allan Hayes
Mathematica Training and Consulting
Leicester UK
www.haystack.demon.co.uk
hay at haystack.demon.co.uk
Voice: +44 (0)116 271 4198
Fax: +44 (0)870 164 0565
"Yaroslav Bulatov" <bulatov at engr.orst.edu> wrote in message
news:ab07sb$1tl$1 at smc.vnet.net...
> I've running into problems getting functions of some add-on packages
> to evaluate. When I run the function, the answer is in unevaluated
> form, and doing Evaluate[...] doesn't help. Here's an example.
>
> <<DiscreteMath`ComputationalGeometry`
>
> ConvexHull[{{0,0}, {1,0}, {0,0}, {2,0}, {1,1}}]
>
> And I get:
>
> ConvexHull[{{0, 0}, {1, 0}, {0, 0}, {2, 0}, {1, 1}}]
>
> I checked my add-ons directory, and ComputationalGeometry.m is there.
> I have the same problem with NumericalMath package.
>
> Any idea what's causing this?
>
> Yaroslav
>