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2/12/2018 2:49 pm  #1

Checking past race against new polars

Hi,  Had the wrong polars loaded during the last race where we sailed particularly well (or better).  How can I use saved log data to compare our performance against a different polar?  Help appreciated.  Thanks http://cdn.boardhost.com/emoticons/confused.png



2/12/2018 4:32 pm  #2

Re: Checking past race against new polars

Polars are not embedded in your log file, so you should be able to just replay it, and display a Percentage of Polar based on new ones, using the old BSP, TWS, TWA. 

Comparing two sets across the log file, could be a bit trickier, though probably doable in Excel with some vlookups and interpolation/averaging work. 

Semiconductor Development Engineer, Retired Viticulturalist, Occasional sailor
"Lioness" 1962 Hinckley Bermuda 40 Custom Yawl

2/13/2018 9:26 am  #3

Re: Checking past race against new polars

You likely use Stripchart to assess performance.   When you load a logfile in Stripchart (Fle - load logfile) you can also indicate which polar should be used.


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