Add supports for upper and lower values on boxplot based on the IQR value #63617
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not-napoleon
added
:Analytics/Aggregations
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Pinging @elastic/es-analytics-geo (:Analytics/Aggregations) |
Conflicts: x-pack/plugin/analytics/src/test/java/org/elasticsearch/xpack/analytics/boxplot/InternalBoxplotTests.java
imotov
approved these changes
Nov 3, 2020
| public class InternalBoxplot extends InternalNumericMetricsAggregation.MultiValue implements Boxplot { | ||
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| enum Metrics { | ||
| MIN { |
| double q1 = state.quantile(0.25); | ||
| double iqr = q3 - q1; | ||
| double upper = q3 + (1.5 * iqr); | ||
| double lower = q1 - (1.5 * iqr); |
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I think it might be a good idea to make this a constant and give it a short explanation....
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@elasticmachine update branch |
not-napoleon
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Nov 4, 2020
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Resolves #60466
This PR expands the functionality of the box plot aggregation to support an upper and lower "whisker" value based on the inter-quartile range. In theory, the upper whisker should be the highest observed value less than or equal to Q3 + (1.5 * IQR), and the lower bound should be the lowest observed value greater than Q1 - (1.5 * IQR). Like all our quantile based aggregations, this will provide an approximation of those values, based on the centroids in the t-digest backing the aggregation.