Re: Problem with "NA"

[Stephen Montgomery-Smith]

On 02/20/2013 03:12 AM, Terry Duell wrote:
> Hello All,
> 
> On Wed, 20 Feb 2013 16:37:10 +1100, Terry Duell <address@hidden>
> wrote:
> 
> 
>>
>> I am slowly getting there as a result of finding a couple of simple
>> errors, now get every time step calculated sensibly for the trailer
>> motions, and all but the last 6 time steps appear OK for the prime mover.
> 
> The behaviour described above gave me the clue, it must have something
> to do with the road surface input to the prime mover, not yet seen by
> the trailer...and sure enough at around 6 time steps before the end the
> front wheel input is suddenly "NA", while the following wheels have sane
> inputs.
> I have it all working now, as it should, but only by using a "sledge
> hammer". I must have domestic blindness, because I can't see why that
> first wheel input goes haywire.
> Not to worry, it will come clear soon.
> Thanks to all who responded to my request for help.
> 
> Cheers,


In my experience, the error often turns out to be something very simple.
 But it takes a huge amount of time to trace where it came from.