Thanks to all for the suggestions. Following Hakan's direction (tack sa mycket), I put the plugin .dll's in the "plugin" directory and got VDR to work, but was having problems with polar_pi.dll. Then I found a thread with posts by "konni" who developed the polar plugin and his posts directed me to the most recent file (polar_win32_pi17_v06_ov320_pi) that he had tweaked, and his polar plugin now comes up fine.
rgleason then suggested the "poleauto" program, developed by the fellow from France,
and I am wondering what that program does that konni's polar plugin does not do?
Background of why I care about polars: Working with programs like Maptech Offshore
Navigator and then Nobeltec
VNS, it became clear that the ETA calculations the programs made were only good for power boats...they didn't take into account tacking. No matter how much I pestered the tech support team at Nobeltec
, they wouldn't change the program so that it would calculate ETA for a tackling sailboat. I did, however, like VNS' feature in their Sailing Plus Pack to have polar information automatically recorded, and there was even the ability to go back and edit the polars to remove erroneous data points that may have been present.
Then I got in communication with Dr. Craig Summers who developed "SailTimer", a program which calculates tacking time to destination
(TTD). And the mobile version even records polar information so the calculations can be specifically tailored to an individual's boat
. But there is no standalone PC (Windows) version of Sailtimer so the search continued.
I discovered that NavSim Technologies' "SailCruiser" had licensed Craig's algorithms, and their program, on a PC, produces tacking-corrected ETA to a route destination
. But they haven't incorporated the polar learning
ability! So I need a way to accurately record
the polar information for my Island Packet
37, and be able to plug
it into a navigation
program that will not only show tacks as the wind
changes (as SailCruiser will), but also integrate my own boat's polar data into its calculations to show optimum tacking angles as well as an accurate tacking time to destination.
Being new to Open CPN, I don't know if this issue has been raised, but it certainly would be nice to have all of those capabilities in one program...record data needed to create polars, create the polars for various configuration of sail, and then calculate and display tacks based on both the changing wind
conditions (direction and wind speed) as well as the individual boat polars.
If anyone is interested, the discussion of TTD can be found on sailtimer.com, and there was also an extensive thread on the subject at PANBO (search "sailtimer").
In the meantime, if I want to gather the data and have a program create polars for my boat that I can edit, am I on the right track with konni's polar plugin. or is "poleauto" a better solution?