def pdf(x, mean=0.0, stdev=1.0):
    u = float(x - mean) / abs(stdev)
    return (1 / (sqrt(2*pi) * abs(stdev))) * exp(-u*u / 2)
Update the tile_class_id of a tile to a new value.
dataset/ETHPy150Open clips/pattern/pattern/metrics.py/pdf--crossover with--dataset/ETHPy150Open GeoscienceAustralia/agdc/src/abstract_ingester/ingest_db_wrapper.py/IngestDBWrapper.update_tile_class