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I want to store my users location using longitude and latitude, at the moment this comes from Google Maps, but I will be using GeoDango and some point to work out distances between to points also.
However, my first confusion is which field in Django I should be using to store the longitude and latitude values? The information I'm getting is conflicting.
The official documentation uses a FloatField https://docs.djangoproject.com/en/dev/ref/contrib/gis/tutorial/#geographic-models
lon = models.FloatField() lat = models.FloatField() Where almost every answer on stackoverflow shows a DecimalField
long = models.DecimalField(max_digits=8, decimal_places=3) lat = models.DecimalField(max_digits=8, decimal_places=3) So what should I be using?
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fig = plt. figure(figsize=(8, 8)) m = Basemap(projection='lcc', resolution=None, width=8E6, height=8E6, lat_0=45, lon_0=-100,) m. etopo(scale=0.5, alpha=0.5) # Map (long, lat) to (x, y) for plotting x, y = m(-122.3, 47.6) plt. plot(x, y, 'ok', markersize=5) plt.
Fields in Django are the data types to store a particular type of data. For example, to store an integer, IntegerField would be used. These fields have in-built validation for a particular data type, that is you can not store “abc” in an IntegerField. Similarly, for other fields.
Float is generally an approximation, see here for some simple examples. You could get very nice results modifying your model to something like DecimalField(max_digits=9, decimal_places=6), since decimals are very important in coordinates but using more than 6 is basically meaningless.
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