I'm working on a small GPX related command-line app that allows a bounding box to be specified as one of it's arguments.
I've looked around and haven't really noticed a standardized order of writing down the points. Right now I'm using. lat1 lat2 lon1 lon2 but perhaps lat1 lon1 lat2 lon2 is preferred? Or... lon1 lat1 lon2 lat2? Maybe there's 2 or 3 common orderings and they have specific names so you know which you're dealing with? Also, as it stands I'm only using a rectangular bounds since it's easy to check if a point is inside it with a simple lat1 <= newpoint <= lat2 but I should really use a better way of checking so that skewed boxes or arbitrary shapes could be used. Does anyone know where I could find an example of how to do that? There's probably a library that does this already somewhere. Thanks, -Don.
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