Make random numbers - Githubissues

openclimatefix / nowcasting_datamodel

Datamodel for the nowcasting project

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Make random numbers #122

Closed peterdudfield closed 2 years ago

peterdudfield commented 2 years ago

Make random number sin fake data to reflect sun

Detailed Description

Make random numbers in fake data to reflect sun
should be zero at night

Context

Make fake data a bit more real

Possible Implementation

some in here and here

Probably good to do something like this

fraction_of_day = (target_time.hour*60 + target_time.minute) / (24*60)
total_minutes_in_day = 24*60
# use double cos wave for intenisty, but set night time to zero
if fraction_of_day > 0.25 & fraction_of_day < 0.75:
    intenisty = cos(2 * 2*pi*fraction_of_day)
else:
   intenisty = 0
power = capacity * ( intenisty)

Always nice to do a different function (+ a small test), and then use that function in the two locations

peterdudfield commented 2 years ago

Maybe we add 5% noise, so that not all the values are the same. We could add postive noise so we never get negative vlaues, or a factor