Description Usage Arguments Value Author(s)
Usually, >90% of the negative values are in [-8,0), with the remainder being < 8. This method adds 8 to all values, then hard thresholds the remaining values that are still negative to some small positive number (eg 1)
1 2 | transform_Agilent_log(data, offset = 8, minVal = 1,
base = 2)
|
data |
a |
offset |
the first offset that is added to all values. |
minVal |
if any values are small than this minVal, then hard-threshold them to this minVal |
base |
the logarithm base. default=2 for log-base-2 |
if a matrix-like object was passed into this method, then a log transformed matrix is returned. If a list was passed into this method, then the value and error will be logged (base 2).
Mark Cowley, 2008-08-01
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