QuantileOperator

QuantileOperator produces the value representing the data at a cummulative probability. This is a numeric operation.

As an example, quantiles might be produced for the 0.25, 0.5, and 0.75 probabilities (alternately, the 25th, 50th, and 75th percentile ranks, the 50th percentile being the median). Data is sorted is ascending order. This operator takes one percentile, but it is common to generate multiple quantile ranks for the same field when summarizing.

All the field's values are stored in memory as part of this calculation. This is handled by unique key value lists.

final

class QuantileOperator : SingleFieldOperator {

this(size_t fieldIndex, MissingFieldPolicy missingPolicy, double probability);

SingleFieldCalculator makeCalculator();

class QuantileCalculator;

}

Constructors

this this(size_t fieldIndex, MissingFieldPolicy missingPolicy, double probability): Undocumented in source.

Members

Classes

QuantileCalculator class QuantileCalculator: Undocumented in source.

Functions

makeCalculator SingleFieldCalculator makeCalculator(): Undocumented in source. Be warned that the author may not have intended to support it.

Inherited Members

From SingleFieldOperator

setCustomHeader void setCustomHeader(string customHeader): Undocumented in source. Be warned that the author may not have intended to support it.
name string name(): Undocumented in source. Be warned that the author may not have intended to support it.
allowCustomHeader bool allowCustomHeader(): Undocumented in source. Be warned that the author may not have intended to support it.
setSaveFieldValuesNumeric void setSaveFieldValuesNumeric(): Undocumented in source. Be warned that the author may not have intended to support it.
setSaveFieldValuesText void setSaveFieldValuesText(): Undocumented in source. Be warned that the author may not have intended to support it.
missingPolicy MissingFieldPolicy missingPolicy(): Undocumented in source. Be warned that the author may not have intended to support it.
fieldIndex size_t fieldIndex(): Undocumented in source. Be warned that the author may not have intended to support it.
header string header(): Undocumented in source. Be warned that the author may not have intended to support it.
useHeaderSuffix bool useHeaderSuffix(): Undocumented in source. Be warned that the author may not have intended to support it.
processHeaderLine void processHeaderLine(char[][] fields): Undocumented in source. Be warned that the author may not have intended to support it.
numericFieldsToSave size_t[] numericFieldsToSave(): Undocumented in source. Be warned that the author may not have intended to support it.
textFieldsToSave size_t[] textFieldsToSave(): Undocumented in source. Be warned that the author may not have intended to support it.
makeCalculator SingleFieldCalculator makeCalculator(): Undocumented in source.