These functions are fully defunct, no longer implemented, and will not work.
p_length_for_age_inf(q, age, male)q_length_for_age_inf(p, age, male)
z_length_for_age_inf(q, age, male)
p_weight_for_age_inf(q, age, male)
q_weight_for_age_inf(p, age, male)
z_weight_for_age_inf(q, age, male)
p_weight_for_length_inf(q, length, male)
q_weight_for_length_inf(p, length, male)
z_weight_for_length_inf(q, length, male)
quantile or probability
age in months
0 = female; 1 = male
centimeters