Polar data

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Polar data

Postby kagmara » Sun Dec 23, 2012 8:42 am

I've buyed options some days ago and it was a little bit difficult to change the polar data from simple to complete options. At least, I put the link to the file "VG2012\vendeeglobe_pro-full.csv" in the simple field and selected "Simple". Nothing was working with "Multi sails" parameters. Now everthing is working perfectly, but it was a little bit confusing.

Thank you again for your work.
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Re: Polar data

Postby omar » Sun Dec 23, 2012 6:15 pm

The files from vrtoutoulz are all in the compact CSV format
(data for all the sails are in a single "merged" sail dataset).

Multi-sail files are in XML format, with separate data for each sail,
like this one.

Both formats work similarly.
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Re: Polar data

Postby ghelle » Wed Dec 04, 2013 8:34 am

Hello,

is it possible ta have the data format for csv anf xml polar files?

Thanks for your help!

Guillaume
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Re: Polar data

Postby omar » Tue Feb 11, 2014 10:39 am

XML and CSV formats are similar in terms of data format.
XML is a multi-sail format (i.e. there is a data section for each sail)

CSV have a single 'merged' sail section. The data for each
point (wind speed,wind angle) is for the sail that
produces the best boat speed for that sailing point.

The first line of the sail data section has a list of wind speeds (in knts)
Code: Select all
0;2;4;5;6;7;8;9;10;12;14;16;18;20;22;24;25;26;28;30;32;34;36;38;40;42;44;46;48;50;60;70;


The following lines start with wind angle followed by a list of boat speeds (also in knts).
Use "." as decimal separator and ";" to separate values, as shown below
Code: Select all
35;1.50;3.70;4.50;5.30;5.50;6.40;6.50;6.50;7.20;7.60;7.80;7.90;8.10;8.20;8.40;8.40;8.50;8....
40;2.00;4.60;5.60;6.60;6.80;7.90;8.00;8.10;9.10;9.40;9.60;9.80;10.00;10.20;10.30;10.40;...
45;2.30;5.10;6.20;7.20;7.70;8.40;8.50;8.60;9.50;9.90;10.10;10.40;10.60;10.70;10.90;11.00;...


The number of boat speeds must match the number of wind speeds in the first line.

Normally you have lines spaced 2 degrees in the close hauled section (i.e. wind angle near 40 deg)
and for each 5 degrees in the rest of the wind angles. This is the so called "classic" polars.

CSV files may have an extra parameter in each point indicating the sail number
that produces the best boat speed. The sail number is separated from the boat speed by a ":"
as shown below
Code: Select all
40;1.9:1;2.85:1;8.56:1;8.56:1;9.51:1;9.8:1;11.42:1;12.18:1;10.85:1;10.18:1;10.18:1;9.32:1..
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