Too complicated polygons

[silantyev]

I recently widely used your package to calculate the road length of cities and entire countries. Thank you for this module, it was really helpful. However I found that when the geometry of the object is complicated so that query length is too long, Overpass API returns the error 414.

To fix that I modified a couple of functions:

in katana() I modified a constructor and the first if statement as follows with adding additional parameter urllen_threshold: def katana(geometry, threshold_func, threshold_value, count=0, urllen_threshold=7648): if (threshold_func(geometry, threshold_value) and (len(to_overpass_coords(geometry)) < urllen_threshold)) or count == 250:

Since it doesn't guarantee that url length will be short enough before the number of recursions can be exceeded, I also modified the beginning of get() function:

def get(geometry, threshold_value=1000000, urllen_threshold=7648):
    geometries = katana(geometry, threshold_func, threshold_value, urllen_threshold=urllen_threshold)
    
        while True:
            for geo in geometries:
                urllen = len(to_overpass_coords(geo))
                if urllen >= urllen_threshold:
                    geometries.remove(geo)
                    geometries.extend(katana(geo, threshold_func, threshold_value, urllen_threshold=urllen_threshold))
                    break
            else:
                break

        responses = []
        for geo in geometries:

Note: the value 7648 was found experimentally, perhaps this value can be higher, but definitely less than 8000.