Re: [Discuss-gnuradio] the block “complex to Arg” in gnuradio

[Johannes Demel]

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Hi,

Could you extend a test case for this block with Python? This might
reveal issues with the implementation more easily. Also, others might
benefit from it.
For your specific problem, I guess the GR block result is as close as
it gets for a LUT-based calculation. And it's not off by a lot but by
some 10^-x.

Cheers
Johannes

On 10.11.2015 10:29, w xd wrote:
> Hi all,
> 
> Thank you very much in advance.
> 
> I find the result of the block "complex to Arg" is same to the 
> result in matlab most of the time,while sometimes the results is
> different from the result in matlab.
> 
> For example, a=1.646236600879293e+03 + 8.043715071772031e+00i I use
> the command  atan2 or angle to calculate the result. It return
> 0.004886084452240.
> 
> While i calculate the result using the gnuradio. It return
> 0.002944485750049.
> 
> Can someone explain it?
> 
> The version of gnuradio:3.7.5. Best regards, xd
> 
> 
> 
> _______________________________________________ Discuss-gnuradio
> mailing list address@hidden 
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> 
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