Generates frequency analysis (a histogram), computes value counts in a given data set, either using all discrete values or using determined intervals. All data types supported by DQC can be used.

This step can perform frequency analysis over multiple columns of input data in a single pass.

This step has two outputs: statistical and data set.

Statistical Output - output format of String [stat_name], String [stat_value/classification_label], String [record_count].

The output data set has the same number of columns and records as the input data set.

<step id='alg' className='cz.adastra.cif.tasks.analysis.frequency.FrequencyAnalysisAlgorithm'>
                <properties>
                        <analyses>
                                <analysis name="frquency" expression="value" classification="result_reference" >
                                        <range>
                                                <from>10</from>
                                                <to>20</to>
                                                <count>5</count>
                                        </range>
                                </analysis>
                        </analyses>
                </properties>
</step>