On 10/18/19 4:35 AM, doganad...@gmail.com wrote: > Here is my question: > > > I am using the numpy.std formula to calculate the standart deviation. > However, the result comes as a number in scientific notation. > Therefore I am asking, How to convert a scientific notation to decimal > number, and still keep the data format as float64 ? > > Or is there any workaround to get the initial standart deviation result as a > decimal number? > > > Here is my code: > > stdev=numpy.std(dataset) > print(stdev) > Result: 4.999999999999449e-05 > > > print(stdev.dtype) > Result: float64 > > > Solutions such as this: > > stdev=format(stdev, '.10f') > converts the data into a string object! which I don't want. > > > Expected result: I am willing to have a result as a decimal number in a > float64 format. > > System: (Python 3.7.4 running on Win10) > > > Regards,
The number itself isn't in scientific notation or a fixed point number, but is a floating point number that is expressed internally as an integer times a power of 2 (that is the basic representation format for floating point). Scientific notation vs fixed point notation is purely an OUTPUT configuration, not a function on how the number is stored (so in one sense IS more closely linked to a string than the float itself). -- Richard Damon -- https://mail.python.org/mailman/listinfo/python-list