Log - Take the log of data
<in.H Log [range=3 centered=2] > out.H
defines the smallest allowed value. Defining max to be the maximum of the logs (best signal), output values (bad signal) below (max-range) are set to (max-range). Often you might choose range to be a small integer, for example, range=3 means each input handled as max(input, biggest/1000).
defines method of shifting mean of log. 0-The max is subtracted so all logs are negative. label2='log base 10' is putched 1- The average of max and (max-range) is subtracted. (effectively scaling the original data) pclip=100 is putched. 2-The average value of all the logs is subtracted. range=2*(max-avg) is putched.
[10] Maximum memory to use in Megabytes
Base ten logarithm of absolute values.
util/vector