Thoughput History - Index used in getSampleSize

[jiuyuetianjiuyuetian]

Environment

• [] The MPD passes the DASH-IF Conformance Tool on http://dashif.org/conformance.html
• [] The stream has correct Access-Control-Allow-Origin headers (CORS)
• [] There are no network errors such as 404s in the browser console when trying to play the stream
• [] The issue observed is not mentioned on https://github.com/Dash-Industry-Forum/dash.js/wiki/FAQ
• [] The issue occurs in the latest reference client on http://reference.dashif.org/dash.js/ and not just on my page

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Observed behaviour

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Console output

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[epiclabsDASH]

@jiuyuetianjiuyuetian original message:

in throughputHistory file,the way of getSampleSize ,a line of const ratio = arr[-i] / arr[-i - 1], I want to know about -i means?should not be i ?