4nec2 hidden variables.
On 15/08/2011 13:50, Helmut Wabnig wrote:
On Mon, 15 Aug 2011 09:59:00 +0100, wrote:
Placing sources requires that you click whilst away from the wire and
then drag the source onto the wire. This is not a bug, just the way that
the author chose to do it.
Show me the place in the manual or help where that is described.
Normally we do drag and drop, but here we must .
Made me crazy, but no longer now since I know it,
and I will keep it a secret and not tell anyone.
Firstly it is not 'drag, drop& move'; it is click, drag & drop! Try
reading the Help a little more closely, you will find that it says:
"The next thing to do is add a voltage-source. While still in Add-mode,
click the 'Source button' (right of the 'Wire button'). Next click and
hold down your left mouse-button somewhere in the picture-box. At the
current mouse-pointer position a new source-object is displayed. Drag
the source-object to the middle of the second wire, just between the two
lower wires-ends of the feedline and release the mouse-button. When
properly positioned a new source is now added."
In many years of using 4Nec2 I have never had it loose a file, so I can
only assume that there is some sort of problem at your end.
Of course, it's free, so it must be my fault.
From the little programming I did, I know it's 99% user interface
and 1% programming the more interesting part.
No one else reports this problem so draw your own conclusions!!! The
fact that it is free has no bearing on it.
Yes, it would be nice to have a 'New' button, but again not a bug, just
the way that the program works. If this minor inconvenience pains you
that much ask the author to add one.
No, no, it's free.
Have you contacted the author and asked for this feature? No? I thought
not. Again the fact that it is free has no bearing.
Regarding optimization the phrase 'garbage in garbage out' springs to
mind. Optimizers are just that, optimizers, they WILL NOT take a rubbish
design and turn it into the perfect antenna.
Optimizers rely on finding minima (or maxima) in the set of parameters
that you supply, so unless you are close to a good design it is very
likely that they will 'get stuck' in a local minima and then home in on
something other than an optimum design. So you have to have a good
design to start with and also not try to optimize to a set of
unrealistic goals. This applies TO ALL optimizers not just 4Nec2.
Regards
Jeff
You are right, that's how it is.
Yes that is the way it is with ALL optimizers, not just 4nec2; gigo.
No one is forcing you to use 4nec2, however, no one else seems to be
having the problems that you claim are 'bugs', perhaps you should have
more patience, read the help more closely, and not be so quick to criticize.
Jeff
|