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43 lines
965 B
Text
43 lines
965 B
Text
##! Calculate the standard deviation.
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@load ./variance
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@load ../main
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module SumStats;
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export {
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redef enum Calculation += {
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## Calculate the standard deviation of the values.
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STD_DEV
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};
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redef record ResultVal += {
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## For numeric data, this calculates the standard deviation.
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std_dev: double &default=0.0;
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};
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}
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function calc_std_dev(rv: ResultVal)
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{
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if ( rv?$variance )
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rv$std_dev = sqrt(rv$variance);
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}
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hook std_dev_hook(r: Reducer, val: double, obs: Observation, rv: ResultVal) &deprecated="Remove in v6.1. Usage testing indicates this function is unused."
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{
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calc_std_dev(rv);
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}
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hook register_observe_plugins() &priority=-10
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{
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register_observe_plugin(STD_DEV, function(r: Reducer, val: double, obs: Observation, rv: ResultVal)
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{
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calc_std_dev(rv);
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});
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add_observe_plugin_dependency(STD_DEV, VARIANCE);
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}
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hook compose_resultvals_hook(result: ResultVal, rv1: ResultVal, rv2: ResultVal) &priority=-10
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{
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calc_std_dev(result);
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}
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