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36 lines
No EOL
786 B
Text
36 lines
No EOL
786 B
Text
@load ./sum
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@load ./variance
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module Metrics;
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export {
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redef enum Calculation += {
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## Find 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 &log &optional;
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};
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}
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# This depends on the variance plugin which uses priority -5
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hook add_to_calculation(filter: Filter, val: double, data: DataPoint, result: ResultVal) &priority=-10
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{
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if ( STD_DEV in filter$measure )
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{
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if ( result?$variance )
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result$std_dev = sqrt(result$variance);
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}
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}
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hook plugin_merge_measurements(result: ResultVal, rv1: ResultVal, rv2: ResultVal) &priority=-10
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{
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if ( rv1?$sum || rv2?$sum )
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{
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result$sum = rv1?$sum ? rv1$sum : 0;
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if ( rv2?$sum )
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result$sum += rv2$sum;
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}
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} |