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    2/12/2018 2:49 pm  #1

    fchurtic
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    Registered: 2/15/2016
    Posts: 3

    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 
    Fchurtic
     

     

    2/12/2018 4:32 pm  #2

    sheldon.haynie
    Expert

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    From: San Francisco Bay
    Registered: 1/13/2016
    Posts: 133

    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

    ZeeZee
    Expert

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    Registered: 3/30/2016
    Posts: 321

    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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