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If you have your map downloaded in your phone before you lost your internet connection, this will be a huge help.
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What I've tried: I have tried Open Street Maps, JOSM, Leaflet, OpenLayers, but I can't seem to be getting the hang of any of these.What would we really do without Google maps? If you are travelling to an unknown area and you coincidentally, you don’t have good internet with you then how can you return to your home? The answer might be that you have no idea about what to do in this crucial situation. Is it possible to plot points/lines on these tiles, and is there a built in function (like google roads snap to roads) that finds the nearest road? I'm not sure what to do with these tiles however. I'm currently working on plotting roads in Taipei, so I've already downloaded MBTiles for this city, as per some suggestions I've looked at online.
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I've also looked at JOSM, but is it possible to plot on JOSM using a program rather than directly on the interface? I've been looking at offline solutions like Open Street Maps (which a lot of people suggest), but I can't seem to figure out how to plot things. I currently have a program (using js and node.js) that uses the google maps api and google roads api to produce a map, and given a set of points, returns another set of points containing roads nearest to the given points, and plots this. I'm looking for an offline map API for web like Google maps (because I know I can't use this offline).
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