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345 lines
9.6 KiB
Plaintext
345 lines
9.6 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsstatisticalsummary.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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class QgsStatisticalSummary
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{
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%Docstring
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Calculator for summary statistics for a list of doubles.
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Statistics are calculated by calling :py:func:`~calculate` and passing a list of doubles. The
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individual statistics can then be retrieved using the associated methods. Note that not all statistics
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are calculated by default. Statistics which require slower computations are only calculated by
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specifying the statistic in the constructor or via :py:func:`~setStatistics`.
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.. versionadded:: 2.9
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%End
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%TypeHeaderCode
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#include "qgsstatisticalsummary.h"
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%End
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public:
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enum Statistic
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{
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Count,
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CountMissing,
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Sum,
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Mean,
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Median,
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StDev,
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StDevSample,
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Min,
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Max,
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Range,
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Minority,
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Majority,
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Variety,
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FirstQuartile,
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ThirdQuartile,
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InterQuartileRange,
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First,
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Last,
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All
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};
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typedef QFlags<QgsStatisticalSummary::Statistic> Statistics;
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QgsStatisticalSummary( QgsStatisticalSummary::Statistics stats = QgsStatisticalSummary::All );
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%Docstring
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Constructor for QgsStatisticalSummary
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:param stats: flags for statistics to calculate
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%End
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virtual ~QgsStatisticalSummary();
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Statistics statistics() const;
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%Docstring
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Returns flags which specify which statistics will be calculated. Some statistics
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are always calculated (e.g., sum, min and max).
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.. seealso:: :py:func:`setStatistics`
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%End
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void setStatistics( QgsStatisticalSummary::Statistics stats );
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%Docstring
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Sets flags which specify which statistics will be calculated. Some statistics
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are always calculated (e.g., sum, min and max).
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:param stats: flags for statistics to calculate
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.. seealso:: :py:func:`statistics`
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%End
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void reset();
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%Docstring
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Resets the calculated values
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%End
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void calculate( const QList<double> &values );
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%Docstring
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Calculates summary statistics for a list of values
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:param values: list of doubles
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%End
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void addValue( double value );
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%Docstring
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Adds a single value to the statistics calculation. Calling this method
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allows values to be added to the calculation one at a time. For large
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quantities of values this may be more efficient then first adding all the
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values to a list and calling :py:func:`~QgsStatisticalSummary.calculate`.
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:param value: value to add
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.. note::
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call :py:func:`~QgsStatisticalSummary.reset` before adding the first value using this method
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to clear the results from any previous calculations
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.. note::
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:py:func:`~QgsStatisticalSummary.finalize` must be called after adding the final value and before
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retrieving calculated statistics.
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.. seealso:: :py:func:`calculate`
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.. seealso:: :py:func:`addVariant`
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.. seealso:: :py:func:`finalize`
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.. versionadded:: 2.16
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%End
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void addVariant( const QVariant &value );
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%Docstring
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Adds a single value to the statistics calculation. Calling this method
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allows values to be added to the calculation one at a time. For large
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quantities of values this may be more efficient then first adding all the
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values to a list and calling :py:func:`~QgsStatisticalSummary.calculate`.
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:param value: variant containing to add. Non-numeric values are treated as null.
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.. note::
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call :py:func:`~QgsStatisticalSummary.reset` before adding the first value using this method
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to clear the results from any previous calculations
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.. note::
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:py:func:`~QgsStatisticalSummary.finalize` must be called after adding the final value and before
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retrieving calculated statistics.
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.. seealso:: :py:func:`addValue`
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.. seealso:: :py:func:`calculate`
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.. seealso:: :py:func:`finalize`
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.. versionadded:: 2.16
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%End
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void finalize();
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%Docstring
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Must be called after adding all values with :py:func:`~QgsStatisticalSummary.addValues` and before retrieving
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any calculated statistics.
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.. seealso:: :py:func:`addValue`
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.. seealso:: :py:func:`addVariant`
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.. versionadded:: 2.16
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%End
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double statistic( QgsStatisticalSummary::Statistic stat ) const;
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%Docstring
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Returns the value of a specified statistic
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:param stat: statistic to return
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:return: calculated value of statistic. A NaN value may be returned for invalid
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statistics.
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%End
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int count() const;
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%Docstring
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Returns calculated count of values
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%End
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int countMissing() const;
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%Docstring
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Returns the number of missing (null) values
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.. versionadded:: 2.16
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%End
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double sum() const;
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%Docstring
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Returns calculated sum of values
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%End
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double mean() const;
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%Docstring
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Returns calculated mean of values. A NaN value may be returned if the mean cannot
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be calculated.
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%End
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double median() const;
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%Docstring
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Returns calculated median of values. This is only calculated if Statistic.Median has
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been specified in the constructor or via setStatistics. A NaN value may be returned if the median cannot
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be calculated.
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%End
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double min() const;
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%Docstring
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Returns calculated minimum from values. A NaN value may be returned if the minimum cannot
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be calculated.
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%End
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double max() const;
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%Docstring
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Returns calculated maximum from values. A NaN value may be returned if the maximum cannot
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be calculated.
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%End
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double range() const;
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%Docstring
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Returns calculated range (difference between maximum and minimum values). A NaN value may be returned if the range cannot
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be calculated.
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%End
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double first() const;
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%Docstring
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Returns the first value obtained. A NaN value may be returned if no values were encountered.
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.. seealso:: :py:func:`last`
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.. versionadded:: 3.6
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%End
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double last() const;
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%Docstring
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Returns the last value obtained. A NaN value may be returned if no values were encountered.
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.. seealso:: :py:func:`first`
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.. versionadded:: 3.6
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%End
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double stDev() const;
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%Docstring
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Returns population standard deviation. This is only calculated if Statistic.StDev has
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been specified in the constructor or via setStatistics. A NaN value may be returned if the standard deviation cannot
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be calculated.
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.. seealso:: :py:func:`sampleStDev`
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%End
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double sampleStDev() const;
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%Docstring
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Returns sample standard deviation. This is only calculated if Statistic.StDev has
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been specified in the constructor or via setStatistics. A NaN value may be returned if the standard deviation cannot
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be calculated.
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.. seealso:: :py:func:`stDev`
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%End
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int variety() const;
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%Docstring
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Returns variety of values. The variety is the count of unique values from the list.
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This is only calculated if Statistic.Variety has been specified in the constructor
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or via setStatistics.
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%End
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double minority() const;
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%Docstring
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Returns minority of values. The minority is the value with least occurrences in the list.
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This is only calculated if Statistic.Minority has been specified in the constructor
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or via setStatistics. If multiple values match, return the first value relative to the
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initial values order. A NaN value may be returned if the minority cannot be calculated.
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.. seealso:: :py:func:`majority`
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%End
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double majority() const;
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%Docstring
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Returns majority of values. The majority is the value with most occurrences in the list.
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This is only calculated if Statistic.Majority has been specified in the constructor
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or via setStatistics. If multiple values match, return the first value relative to the
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initial values order. A NaN value may be returned if the minority cannot be calculated.
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.. seealso:: :py:func:`minority`
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%End
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double firstQuartile() const;
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%Docstring
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Returns the first quartile of the values. The quartile is calculated using the
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"Tukey's hinges" method. A NaN value may be returned if the first quartile cannot
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be calculated.
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.. seealso:: :py:func:`thirdQuartile`
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.. seealso:: :py:func:`interQuartileRange`
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%End
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double thirdQuartile() const;
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%Docstring
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Returns the third quartile of the values. The quartile is calculated using the
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"Tukey's hinges" method. A NaN value may be returned if the third quartile cannot
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be calculated.
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.. seealso:: :py:func:`firstQuartile`
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.. seealso:: :py:func:`interQuartileRange`
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%End
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double interQuartileRange() const;
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%Docstring
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Returns the inter quartile range of the values. The quartiles are calculated using the
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"Tukey's hinges" method. A NaN value may be returned if the IQR cannot
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be calculated.
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.. seealso:: :py:func:`firstQuartile`
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.. seealso:: :py:func:`thirdQuartile`
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%End
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static QString displayName( QgsStatisticalSummary::Statistic statistic );
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%Docstring
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Returns the friendly display name for a ``statistic``.
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.. seealso:: :py:func:`shortName`
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%End
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static QString shortName( QgsStatisticalSummary::Statistic statistic );
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%Docstring
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Returns a short, friendly display name for a ``statistic``, suitable for use in a field name.
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.. seealso:: :py:func:`displayName`
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.. versionadded:: 3.6
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%End
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};
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QFlags<QgsStatisticalSummary::Statistic> operator|(QgsStatisticalSummary::Statistic f1, QFlags<QgsStatisticalSummary::Statistic> f2);
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/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsstatisticalsummary.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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