Example usage for java.util.stream DoubleStream of

Introduction

In this page you can find the example usage for java.util.stream DoubleStream of.

Prototype

public static DoubleStream of(double... values) 

Source Link

Document

Returns a sequential ordered stream whose elements are the specified values.

Usage

From source file:com.jscriptive.moneyfx.ui.chart.ChartFrame.java

private String getAccountLabel(Account account) {
    String accountLabel;/*from w ww  . j a v a 2  s.co m*/
    if (account == ALL_ACCOUNTS) {
        double balance = accountCombo.getItems().stream()
                .flatMapToDouble(a -> DoubleStream.of(a == ALL_ACCOUNTS ? 0.0 : a.getBalance().doubleValue()))
                .sum();
        accountLabel = format(" All accounts [%s]", CurrencyFormat.getInstance().format(balance));
    } else {
        accountLabel = format(" %s [%s]", account.toPresentableString(), account.getFormattedBalance());
    }
    return accountLabel;
}

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From source file:com.jscriptive.moneyfx.ui.chart.ChartFrame.java

private double getSum(List<Transaction> transactions) {
    return abs(transactions.parallelStream()
            .flatMapToDouble(trx -> DoubleStream.of(trx.getAmount().doubleValue())).sum());
}

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From source file:gr.iti.mklab.reveal.forensics.util.Util.java

/**
 * Calculate histogram/*from ww w .  j  a  v a  2  s. co  m*/
 */

public static int[] createhistogram(double[] zmat, int bins) throws IOException {

    OptionalDouble max = DoubleStream.of(zmat).max();
    OptionalDouble min = DoubleStream.of(zmat).min();
    int[] result = new int[bins];
    double binSize = (max.getAsDouble() - min.getAsDouble()) / bins;

    for (double d : zmat) {
        int bin = (int) ((d - min.getAsDouble()) / binSize);
        if (bin < 0) {
            /* this data is smaller than min */ System.out.println("this data point is smaller than min " + d);
        } else if (bin >= bins) { /* this data point is bigger than max */
            result[bin - 1] += 1;
        } else {
            result[bin] += 1;
        }
    }

    return result;
}

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From source file:org.openbase.bco.ontology.lib.manager.aggregation.DataAggregation.java

private double calcTimeWeighting(final double[] timeWeightingArray, final int periodLength) {
    return DoubleStream.of(timeWeightingArray).sum() / periodLength;
}

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