Hi SUG members,
The Sailwave rating for the 2016 RYA PN ratings has recently been
updated to remove the historical ratings. A separate Sailwave rating
file which contains the historical ratings published by the RYA is
now available.
I note that the RYA web site has been updated between Saturday
morning, when I downloaded the original file, and when I checked
this morning to also separate the data into two files.
I have also updated the data in the SCHRS & SCHRSPN Equivalent
files after I checked the information on the SCHRS web site and
noticed that the data had been updated in February 2016. The latter
file I also updated to included the latest multi-hull numbers from
the RYA PN for direct comparison.
**NOTE 1** - if you use SCHRSPN Equivalent file and there is a
published RYA PN for a multi-hull class it will be the calculated
equivalent PN that will be used and not the published RYA PN.
However, if you also use the 2016 RYA PN file you would be able to
choose which rating you use. To help you choose see Note 2.
**Note 2** - if you use both the 2016 RYA PN rating file and/or
either of the SCHRS related files, the RYA file has class names in
CAPITALS and in the SCHRS files class names are Mixed Case.
**Note 3** - if you use the RYA PN Historical file the class
names are in Mixed Case
Thank you Jon for so promptly uploading the four ratings files and
updating the text on the Sailwave ratings download page.
Kind regards,
Huw
···
On 08/03/2016 13:45, Huw Pearce
[sailwave] wrote:
huw.pearce@bcs.org.uk
Hi Jim,
When I downloaded the file on Saturday the 2016 PN
ratings and historic al data were all in one file. So I
just modified the file to be compatible with Sailwave and
as I said included all the information available in the
file I downloaded from the RYA web site, except for the
image which is not compatible with CSV format. I also
added an extra line to highlight that the data below was
historical data.
I appreciate that the vast majority of users will not look
inside the Sailwave ratings files, so will not see the
information in them.
However, having just looked at the RYA web site page for
the PY System it has been changed since I downloaded the
data on Saturday. There are two files now, so I will
create a new 2016 CSV file compatible with Sailwave
without the historical data and a separate file for the
historical data with all the information in the RYA files.
I hope that addresses you concerns.
Kind regards,
Huw
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On 08/03/2016 10:23, [sailwave] wrote:
yho@devboats.co.uk
Hmm, speaking personally, but as the person who
actually compiled the list, I’m not at all sure its a
good idea to distribute the historical ratings in the
standard Sailwave file.
There's little doubt that the baseline for ratings
does drift over time, a 1980 Enterprise, Solo or even
Laser with 1980 gear being rather different to a
modern one. The old numbers are being published as
guidelines to help out clubs - much more so than the
modern ones, and I think it would be much better if
clubs were to add the extras to their own ratings file
as a considered addition when required, rather than
just take them as standard as they do with the current
list.
You'd make me feel a lot more comfortable about my
efforts if you didn’t distribute them in the standard
Sailwave file. Have a separate download, sure, if you
think its helpful for users, but I’d be happier to see
all the caveats included wi th the download.
Jim C
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