I'm going to make a system that posts in order of distance from one standard, so which format should I take, decimal or float, when storing coordinates?

http://stackoverflow.com/questions/30706799/which-model-field-to-use-in-django-to-store-longitude-and-latitude-values

I am not good at English, so I roughly interpreted the above article

I think there are two choices, decimal field and float field.

The function I'm going to use isn't very accurate, but it doesn't matter if it's 100 meters

It's a function of finding coordinates close to the surrounding area (somewhere it's called knn).

If the accuracy is not required

Should I use the decimal field?

I'm a beginner, so I don't understand the decimal field.

Does it mean that the decimal place can be determined by using the decimal field? So can we calculate less accurately than when we use float fields?

If so, is it possible to make the server less burdened when searching for coordinates close to Kn depending on the decimal point?

I'm using the janggu.

Oh, finally, if I were to write a long story, would using geodjango help me build the service I want to implement?

Thank you for reading.

django geodjango knn

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