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Re: need your help!


On 5/13/2010 4:24 AM, Ben wrote:
> Dear Sir,
>
> My name is Berihu Teklu. Currently I'm doing a research about
> propagation of entanglement in channel described by structured
> reservoirs. I'm working with Mathematica (version 6.0) .
> And now I have a problem, I try to plot an equation at the end  in the
> attached mathematica file (which is in my case Entanglement of
> Formation). And even after hours of working I don't get any plot.

Without reading your code, if I had a problem like yours, I would 
eliminate all code except that directly concerned with plotting, even 
using simple fake data if necessary. Once that works you know that the 
Plot code works correctly. Then I would add a bit of your real code, try 
the plot again, and add more and more real code. I have had to do this 
many times and eventually I succeed.

I have encountered situations where some simple code looked perfect on 
the screen but did not work. Then when I retype the whole thing all over 
again, it works, even though the good and the bad code looks identical. 
The only thing I can think of is that somehow one or more invisible 
characters got mixed in.

Good luck with fixing your problem.


Steve Gray




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