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California-Planet-Search / rvsearch

RV Planet Search Pipeline Based on RadVel
http://california-planet-search.github.io/rvsearch/
MIT License
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Confusing numbers from the 'thresholds_bics_faps.csv' file #208

Closed zhexingli closed 10 months ago

zhexingli commented 10 months ago

Hello,

I'm a bit confused with the numbers saved in the 'thresholds_bics_faps.csv' file from rvsearch runs. There're four columns, one for "# thresholds", one for "best bics", and two for "faps". What I can infer what this file and what's displayed in rvsearch periodograms is that the first column displays the number for the 0.1% FAP threshold, second column gives the bic number for the highest peak in the periodogram, and third column I'm not sure what it indicates, and the fourth column gives actual FAP for the highest peak in the periodogram.

Screen Shot 2023-10-04 at 4 23 02 PM

However, I'm not sure how to translate the saved values in the files to the periodogram. For example, the first threshold in the file, 2.592, does not appear to be the actual 0.1% delta BIC threshold presented in the periodogram below, but rather like 25 or 26. So there's a factor of 10 in there. For the best bic values in column 2, the saved numbers in the file is on the order of 10^6, which seems to be outrageously large.

Screen Shot 2023-10-04 at 4 22 51 PM

I don't seem to be able to find a guide explaining how to interpret these numbers in the 'thresholds_bics_faps.csv' file. Could someone maybe help clarify it a bit?

Thanks.

zhexingli commented 10 months ago

Actually, the above issue is caused by the weird display of the Numbers app in the Mac OS system. Opening the file using Excel displays the correct value.