Example usage for org.jfree.data.statistics MeanAndStandardDeviation getMeanValue

Introduction

In this page you can find the example usage for org.jfree.data.statistics MeanAndStandardDeviation getMeanValue.

Prototype

public double getMeanValue() 

Source Link

Document

Returns the mean as a double primitive.

Usage

From source file:org.jfree.data.statistics.DefaultStatisticalCategoryDataset.java

/**
 * Iterate over all the data items and update the cached bound values.
 *///from  w ww.jav a2  s .c  o m
private void updateBounds() {
    this.maximumRangeValue = Double.NaN;
    this.maximumRangeValueRow = -1;
    this.maximumRangeValueColumn = -1;
    this.minimumRangeValue = Double.NaN;
    this.minimumRangeValueRow = -1;
    this.minimumRangeValueColumn = -1;
    this.maximumRangeValueIncStdDev = Double.NaN;
    this.maximumRangeValueIncStdDevRow = -1;
    this.maximumRangeValueIncStdDevColumn = -1;
    this.minimumRangeValueIncStdDev = Double.NaN;
    this.minimumRangeValueIncStdDevRow = -1;
    this.minimumRangeValueIncStdDevColumn = -1;

    int rowCount = this.data.getRowCount();
    int columnCount = this.data.getColumnCount();
    for (int r = 0; r < rowCount; r++) {
        for (int c = 0; c < columnCount; c++) {
            MeanAndStandardDeviation masd = (MeanAndStandardDeviation) this.data.getObject(r, c);
            if (masd == null) {
                continue;
            }
            double m = masd.getMeanValue();
            double sd = masd.getStandardDeviationValue();

            if (!Double.isNaN(m)) {

                // update the max value
                if (Double.isNaN(this.maximumRangeValue)) {
                    this.maximumRangeValue = m;
                    this.maximumRangeValueRow = r;
                    this.maximumRangeValueColumn = c;
                } else {
                    if (m > this.maximumRangeValue) {
                        this.maximumRangeValue = m;
                        this.maximumRangeValueRow = r;
                        this.maximumRangeValueColumn = c;
                    }
                }

                // update the min value
                if (Double.isNaN(this.minimumRangeValue)) {
                    this.minimumRangeValue = m;
                    this.minimumRangeValueRow = r;
                    this.minimumRangeValueColumn = c;
                } else {
                    if (m < this.minimumRangeValue) {
                        this.minimumRangeValue = m;
                        this.minimumRangeValueRow = r;
                        this.minimumRangeValueColumn = c;
                    }
                }

                if (!Double.isNaN(sd)) {
                    // update the max value
                    if (Double.isNaN(this.maximumRangeValueIncStdDev)) {
                        this.maximumRangeValueIncStdDev = m + sd;
                        this.maximumRangeValueIncStdDevRow = r;
                        this.maximumRangeValueIncStdDevColumn = c;
                    } else {
                        if (m + sd > this.maximumRangeValueIncStdDev) {
                            this.maximumRangeValueIncStdDev = m + sd;
                            this.maximumRangeValueIncStdDevRow = r;
                            this.maximumRangeValueIncStdDevColumn = c;
                        }
                    }

                    // update the min value
                    if (Double.isNaN(this.minimumRangeValueIncStdDev)) {
                        this.minimumRangeValueIncStdDev = m - sd;
                        this.minimumRangeValueIncStdDevRow = r;
                        this.minimumRangeValueIncStdDevColumn = c;
                    } else {
                        if (m - sd < this.minimumRangeValueIncStdDev) {
                            this.minimumRangeValueIncStdDev = m - sd;
                            this.minimumRangeValueIncStdDevRow = r;
                            this.minimumRangeValueIncStdDevColumn = c;
                        }
                    }
                }
            }
        }
    }
}

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