Malcolm Smith <[email protected]> writes: > I am a little unclear about the relationship between my OSMAnd Live maps > and downloaded maps. As shown in the screenshots below, I updated both > maps and then compared the dates. My Live USA-CA map shows a last update > of March 6th, while my downloaded USA-CA map shows January 31st. Is this > how it's supposed to work or is my downloaded map redundant? Which map > version am I seeing when I browse the map? Which version would I see if I > lost my internet connection?
In addition to what Jack said: "live" does not mean online. First, you get a map for an area. These are updated monthly, typically appearing around the 9th with a data date of the last day of the previous month (which is awesome freshness to start with). These large files are actually transferred to your phone. Then, whe you turn on "live updates", your phone periodically fetches patch files that have changes from your map's date to very recently. These files are also stored on your phone. I have noticed that configuring live updates to run daily, and only on wifi, leads to them not happening; I'm not sure if there is a background service. So, when I care about freshness, before leaving wifi, I do a manual 'update now' for the map for my state. Live updates are useful for multiple reasons: By getting them, you can avoid redownloading the main map so often. Your map is more up to date for general use. But usually not much happens in a month, and navigation with data that's 30 days old is hard to distinguish from data a few hours old. The gaps between reality and the osm database are bigger than those changes, usually. But people are updating road closures more now. If you are contribuing to OSM, you might add as much as you can from aerials for an area you are going to visit. You then want to see that as a basis for taking notes for further edits. If you are visiting someplace you haven't been, you might want to spiff up the map months ahead of time so you can use the new data. But you might not get to it until closer to the time. It's actually feasible to edit OSM, wait two hours, and then update OSMAnd, usually. -- You received this message because you are subscribed to the Google Groups "Osmand" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
