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# jeteon/dms2dec.py

Forked from tomwhipple/dms2dec.py
Last active Jun 4, 2021
Convert coordinates in DMS notation to decimal in Python.
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 #!/env/python # coding=utf8 """ Converting Degrees, Minutes, Seconds formatted coordinate strings to decimal. Formula: DEC = (DEG + (MIN * 1/60) + (SEC * 1/60 * 1/60)) Assumes S/W are negative. """ import re def dms2dec(dms_str): """Return decimal representation of DMS >>> dms2dec(utf8(48°53'10.18"N)) 48.8866111111F >>> dms2dec(utf8(2°20'35.09"E)) 2.34330555556F >>> dms2dec(utf8(48°53'10.18"S)) -48.8866111111F >>> dms2dec(utf8(2°20'35.09"W)) -2.34330555556F """ dms_str = re.sub(r'\s', '', dms_str) sign = -1 if re.search('[swSW]', dms_str) else 1 numbers = filter(len, re.split('\D+', dms_str, maxsplit=4)) degree = numbers[0] minute = numbers[1] if len(numbers) >= 2 else '0' second = numbers[2] if len(numbers) >= 3 else '0' frac_seconds = numbers[3] if len(numbers) >= 4 else '0' second += "." + frac_seconds return sign * (int(degree) + float(minute) / 60 + float(second) / 3600)

### ytzhang0925 commented Jul 25, 2018

 In Python 3, `filter()` returns a iterable `filter` object rather than a list. `numbers` should be converted to list using `list()`: `numbers = list(numbers)` before subscription. Otherwise, call method `next()` to get items one by one from iterable `numbers`.

### chrisjsimpson commented Apr 1, 2019

 Updated to python 3 https://gist.github.com/chrisjsimpson/076a82b51e8540a117e8aa5e793d06ec @ytzhang0925 there must be a better way" do please share if you wish 👍

### FrankThonig commented Mar 3, 2020

 very nice. thank you.