| rotorUnequal {centrifugeR} | R Documentation |
Balance Tubes of Unequal Mass
Description
rotorUnequal returns the required masses and the positions of tubes of
unequal initial mass.
Usage
rotorUnequal(n, mass = NULL, seed = 2019)
Arguments
n |
an integer, the number of rotor buckets. |
mass |
a numeric vector with optional |
seed |
an integer, the seed for random number generation. Setting a seed
ensures the reproducibility of the result. See |
Details
The number of rotor buckets n ranges from 4 to
48. The number of tubes (i.e. length(mass)) should not be
greater than the number of rotor buckets n.
If mass
is not specified, the names and the masses of tubes must then be taken from
the keyboard. In case mass has no names attribute, tubes will
be named automatically (i.e. S1, S2, S3, etc.).
Value
rotorUnequal returns a data frame with three columns:
initial |
a vector containing the initial masses of tubes. |
required |
a vector containing the required masses of tubes. |
position |
a vector containing the bucket positions of tubes. |
rotorUnequal also plots a schematic diagram of the centrifuge rotor.
References
Sivek G. On vanishing sums of distinct roots of unity. Integers.
2010;10(3):365-8.
Peil O, Hauryliuk V. A new spin on spinning your
samples: balancing rotors in a non-trivial manner. arXiv preprint
arXiv:1004.3671. 2010 Apr 21.
See Also
rotorCheck for checking centrifuge rotors and
rotorEqual for balancing tubes of equal mass.
Examples
# Call the function then input the names and the masses of tubes
rotorUnequal(30)
liver
10.05
gill
9.68
muscle
9.88
# Prepare the masses of tubes then call the function
samples <- round(rnorm(19, mean = 10, sd = 0.5), 2)
rotorUnequal(30, samples)
# Prepare the masses and the names of tubes then call the function
small.samples <- c(10.05, 9.68, 9.88)
names(small.samples) <- c("liver", "gill", "muscle")
rotorUnequal(30, small.samples)