Re: NEC-LIST: Q = Commands for Unix NEC and PC -NEC

Tan Boon Phing wrote:
>
> I am using the pc version nec2. while simulating for larger number of
> segments, I switch to the UNIX NEC. However, with the same input card
> that I have created for the PC-NEC, the unix NEC always claim that the
> input geometry has error.

> CE
> GW,41,1,0,0,-0.007495,0,0,0.007495,0.001
> GW,41,2,0,-0.0008994,-0.0112425,0,-0.0008994,-0.007495,0.001

>
> WIRE
> NO. X1 Y1 Z1 X2 Y2 Z2
> 1 0.00001 0.00000 0.00000 -0.00749 0.00000 0.00000
> 2 0.00002 0.00000 -0.00090 NaN -0.01124 NaN

Which implementation of NEC for UNIX are you using? The problem you
describe is more closely connected to the particular version of the
source code, the language it was written in, and the compiler used to
generate the executable than the OS per se.

In any case, your UNIX implementation of NEC is clearly not reading
the entries in the GW card fields in the manner you intend. And it
looks like you have the ITG and NS fields reversed.... See

          http://www.dec.tis.net/~richesop/nec/cards/gw.htm

for all the details concerning the GW card.

You might have better luck if you (1) use floating point numbers
(rather than integers) where floating point numbers are specified
(e.g., 0.0 rather than 0) and (2) adhere to the field specifications
for the GW input card a little more rigorously.

-- 
Dave Michelson                                  AT&T Wireless Services
davem_at_ee.ubc.ca                               Strategic Technology Group