J G 927 Posted October 28, 2013 Report Share Posted October 28, 2013 I have recently used Plan-G V3 to plan a flight from Alaska to Russia across the Bering Sea. I encountered a problem as I tried to plan my route. I was able to plot my route only so far as I reached the edge of the map. My next point, only fifty or so miles further west was on the other edge of the map. Instead of plotting a course for those 50 miles westward, a course was plotted eastward, back around the world to the point on the other edge of the map a distance of a full circumnavigation less 50 miles!. Am I doing something wrong? Or is it just not possible to plot a course across the map ends in Plan-G? Any help to solve this would be much appreciated! J. Link to post Share on other sites
Andrew Godden 944 Posted October 28, 2013 Report Share Posted October 28, 2013 John, No. It's a limitation of the maps used by Plan-G, in that they don't have a "wrap" capability. It is only graphical and doesn't affect the route planning or distance calculation. Cheers Andrew Link to post Share on other sites
simurq 0 Posted October 31, 2013 Report Share Posted October 31, 2013 You can also map your route on Google Earth first using its path functionality and then, If you have some intention and spare time, you can visualize your route (westward from Alaska to Russia) by reversing your bearing in GE's KML file and off you go... See here for reference: https://developers.google.com/kml/documentation/kmlreference#heading Link to post Share on other sites
allardjd 1,853 Posted October 31, 2013 Report Share Posted October 31, 2013 SkyVector (free) has that capability too. Their new "World" series of charts, "World VFR", "World High" and "World Low" correspond to RW aviation Sectionals, Enroute High and Enroute Low charts but are world wide and continuous. There's a Flight Plan pop-up and you can paste a text string of your route into it. It will put a line on the chart and it will display on all of them, at any zoom level. John Link to post Share on other sites
Quickmarch 488 Posted November 1, 2013 Report Share Posted November 1, 2013 If you do get a chance to talk to someone at Plan G about the problem, the term you need is "Antimeridian". It goes like this: The maps common to those of us located in the Northern hemisphere countries are usually based on the centre of the map placed at the prime meridian (Zero degrees east and west). The Antimeridian maps have their centre located at 180 degrees (E/W), or at the International Date Line. This caused me endless headaches with the navigation systems on my boat during a recent transit of the Pacific. I was back and forth across this line many times, especially in the Fiji area. Weather maps were the biggest aggravation as the system tried to download weather files stretching in a band around the entire planet instead of across +/- 10 degrees. Try this at 5K bandwidths over a HF radio. The guys in Australia and New Zealand will be better sources of solutions as they deal with it all the time. Finally solved my problems by returning to Canada. Link to post Share on other sites
J G 927 Posted November 1, 2013 Author Report Share Posted November 1, 2013 Interesting. I guess if Plan-G included an Anti-meridian map in its map options then the problem would go away simply by using that map to plan any date-line transits. Link to post Share on other sites
Tim_A 997 Posted November 5, 2013 Report Share Posted November 5, 2013 If only it were that simple! Link to post Share on other sites
allardjd 1,853 Posted November 5, 2013 Report Share Posted November 5, 2013 It's not just Plan-G. I recently dropped a route text string into SkyVector's flight planner, which usually works OK. This particular route crossed the International Date Line at a very high latitude, above 70 north. The route line on the map was completely screwed up, more or less making a round-the-world detour in the Arctic to get back to the south-bound remainder of the route. This is not a trivial issue. John Link to post Share on other sites
stu7708 244 Posted November 6, 2013 Report Share Posted November 6, 2013 We should make a petition demanding that Google remove the cost for using their maps in freeware applications Link to post Share on other sites
J G 927 Posted November 6, 2013 Author Report Share Posted November 6, 2013 We should make a petition demanding that Google remove the cost for using their maps in freeware applications Great idea! https://www.change.org/en-GB/start-a-petition Link to post Share on other sites
brett 2,316 Posted November 6, 2013 Report Share Posted November 6, 2013 Petitions do not always work but it doesn't hurt to try. Link to post Share on other sites
J G 927 Posted November 6, 2013 Author Report Share Posted November 6, 2013 Link to post Share on other sites
stu7708 244 Posted November 7, 2013 Report Share Posted November 7, 2013 Let me know how many signatures you get and I'll take it up with Joe Link to post Share on other sites
J G 927 Posted November 7, 2013 Author Report Share Posted November 7, 2013 Judging by the reason given for its importance I should imagine that the signatures will pile on! .......... Link to post Share on other sites
Andrew Godden 944 Posted November 9, 2013 Report Share Posted November 9, 2013 What a bummer of an idea. But then, we might just get enough signatures to cover from distance from here to uranus. Cheers Andrew Link to post Share on other sites
J G 927 Posted November 9, 2013 Author Report Share Posted November 9, 2013 Trouble is, I bet a lot of folks wont be arsed to sign it. Link to post Share on other sites
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