It cannot be easier to create a route on a chart-plotter than it is using a PC or laptop.
Hmmm....With what I perceive to be the current
limitations of the Route & Mark Manager, I beg to differ.
From my experience I only know of two ways to create a route in OpenCPN:
from a GPX file
2. Drawing the route on the chart canvas
I could be totally wrong, but I feel that the first method, for non tech savvy users and without relying on third party tools or scripts is difficult. And again without additional tools or scripts, converting degrees decimal minutes to decimal degrees as required by the GPX standard is just a pain in the arse. As I stated previously, I have never used any nautical chart, pilot guide or Notice to Mariners that have used decimal degrees. For example:
FM JRCC AUSTRALIA 190358Z MAR 20
AUSCOAST WARNING 138/20
DRILL RIG MAERSK DELIVERER/OXOY2 IN POSITION 14-05.59S 123-08.34E
2.5 NM CLEARANCE REQUESTED.
The second method is great on a stable boat
and also when the area on which you are planning your route is easily viewable on the screen. However if I am planning a route sometimes I just want to add a series of waypoints to the route, perhaps change their order, reverse them etc. without even viewing a chart, which I may do later to make sure I am not going to bump into anything. Or perhaps I am just creating a route to represent a set of race
There are several things I would like to see improved with the Route & Mark manager.
1. If I wish to create multiple waypoints, I have to open the "New Waypoint" dialog every time.
2. I can't create a route from the Route & Mark manager.
Just some simple usabilty features. See attachments for some very old UI that I wrote aeons ago that illustrate creation of multiple waypoints and a "waypoint picker" used to create a route.
But this digresses from the original question concerning OpenCPN's lack of processing of WPL & RTE NMEA 183 sentences. I appreciate that while parsing the WPL sentence & adding the waypoint is trivial (a dozen lines of code ?) there are other considerations. If I can send a route or waypoint to a chartplotter
, surely I should be able to do the reverse ?
BTW, In the next release of TwoCan, having discovered that OpenCPN does not parse WPL & RTE sentences, there will be the option that when processing NMEA 2000 PGN 129285 messages, in addition to converting them to WPL & RTE NMEA 183 sentences, to also create the waypoints & routes.