sandbox/compare.py
def calc(pvalues, lamb):
    """ meaning pvalues presorted i descending order"""

    m = len(pvalues)
    pi0 = (pvalues > lamb).sum() / ((1 - lamb)*m)

    pFDR = np.ones(m)
    print("pFDR    y        Pr     fastPow")
    for i in range(m):
        y = pvalues[i]
        Pr = max(1, m - i) / float(m)
        pFDR[i] = (pi0 * y) / (Pr * (1 - math.pow(1-y, m)))
        print(i, pFDR[i], y, Pr, 1.0 - math.pow(1-y, m))


    num_null = pi0*m
    num_alt = m - num_null
    num_negs = np.array(range(m))
    num_pos = m - num_negs
    pp = num_pos / float(m)

    qvalues = np.ones(m)
    qvalues[0] = pFDR[0]
    for i in range(m-1):
        qvalues[i+1] = min(qvalues[i], pFDR[i+1])

    sens = ((1.0 - qvalues) * num_pos) / num_alt
    sens[sens > 1.0] = 1.0

    df = pd.DataFrame(dict(
        pvalue=pvalues,
        qvalue=qvalues,
        FDR=pFDR,
        percentile_positive=pp,
        sens=sens
    ))

    df["svalue"] = df.sens[::-1].cummax()[::-1]

    return df, num_null, m
def calc(pvalues, lamb):
    """ meaning pvalues presorted i descending order"""

    m = len(pvalues)
    pi0 = (pvalues > lamb).sum() / ((1 - lamb)*m)

    pFDR = np.ones(m)
    print("pFDR    y        Pr     fastPow")
    for i in range(m):
        y = pvalues[i]
        Pr = max(1, m - i) / float(m)
        pFDR[i] = (pi0 * y) / (Pr * (1 - math.pow(1-y, m)))
        print(i, pFDR[i], y, Pr, 1.0 - math.pow(1-y, m))


    num_null = pi0*m
    num_alt = m - num_null
    num_negs = np.array(range(m))
    num_pos = m - num_negs
    pp = num_pos / float(m)

    qvalues = np.ones(m)
    qvalues[0] = pFDR[0]
    for i in range(m-1):
        qvalues[i+1] = min(qvalues[i], pFDR[i+1])

    sens = ((1.0 - qvalues) * num_pos) / num_alt
    sens[sens > 1.0] = 1.0

    df = pd.DataFrame(dict(
        pvalue=pvalues,
        qvalue=qvalues,
        FDR=pFDR,
        percentile_positive=pp,
        sens=sens
    ))

    df["svalue"] = df.sens[::-1].cummax()[::-1]

    return df, num_null, m
def calc ( pvalues , lamb ) : m = len ( pvalues ) pi0 = ( pvalues > lamb ) . sum ( ) / ( ( 1 - lamb ) * m ) pFDR = np . ones ( m ) print ( "pFDR    y        Pr     fastPow" ) for i in range ( m ) : y = pvalues [ i ] Pr = max ( 1 , m - i ) / float ( m ) pFDR [ i ] = ( pi0 * y ) / ( Pr * ( 1 - math . pow ( 1 - y , m ) ) ) print ( i , pFDR [ i ] , y , Pr , 1.0 - math . pow ( 1 - y , m ) ) num_null = pi0 * m num_alt = m - num_null num_negs = np . array ( range ( m ) ) num_pos = m - num_negs pp = num_pos / float ( m ) qvalues = np . ones ( m ) qvalues [ 0 ] = pFDR [ 0 ] for i in range ( m - 1 ) : qvalues [ i + 1 ] = min ( qvalues [ i ] , pFDR [ i + 1 ] ) sens = ( ( 1.0 - qvalues ) * num_pos ) / num_alt sens [ sens > 1.0 ] = 1.0 df = pd . DataFrame ( dict ( pvalue = pvalues , qvalue = qvalues , FDR = pFDR , percentile_positive = pp , sens = sens ) ) df [ "svalue" ] = df . sens [ : : - 1 ] . cummax ( ) [ : : - 1 ] return df , num_null , m
meaning pvalues presorted i descending order
meaning pvalues presorted i descending order