OpenCPN/OpenCPN — pull request #39 by tom-r (2012-11-22 08:28:39+00:00)
Title: Dashboard Instrument "Wind History"

Creates a new horizontal dashboard instrument showing
* true wind direction and
* true wind speed
graphically over the last ~30 mins (assuming 1/s update rate).
Curves show live (unfiltered) data as well as smoothed curves
(exponential smoothing) for better visibility of trends.
Curves are zoomed automatically to give best possible resolution
Wind direction curves are shifting automatically if data jumps from
0 to 360 and vice versa, i.e. there is no loss of continuity in the monitoring