This is the front end to be used in conjunction with https://github.com/joabakk/signalk-polar (the backend).
For some reason, you need to run sudo npm install from the root folder of this webapp
A simple highcharts based polar diagram that gets updated Signal K data from the server and searches for database entries for similar wind conditions to create a dynamic polar diagram based on current conditions and historic sailing performance.
This was made with logged data from a motor boat, and tested on same, but shows the principle