BarChart12.java

/**
 * Copyright 2015-2017 Knowm Inc. (http://knowm.org) and contributors.
 * Copyright 2011-2015 Xeiam LLC (http://xeiam.com) and contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.knowm.xchart.demo.charts.bar;

import java.awt.Color;
import java.util.ArrayList;
import java.util.Arrays;

import org.knowm.xchart.CategoryChart;
import org.knowm.xchart.CategoryChartBuilder;
import org.knowm.xchart.CategorySeries;
import org.knowm.xchart.CategorySeries.CategorySeriesRenderStyle;
import org.knowm.xchart.SwingWrapper;
import org.knowm.xchart.demo.charts.ExampleChart;
import org.knowm.xchart.style.Styler.ChartTheme;

/**
 * GGPlot2 Theme Bar chart
 * <p>
 * Demonstrates the following:
 * <ul>
 * <li>String categories
 * <li>Positive and negative values
 * <li>Multiple series
 * <li>Render style - Non-overlayed stepped bars
 */
public class BarChart12 implements ExampleChart<CategoryChart> {

  public static void main(String[] args) {

    ExampleChart<CategoryChart> exampleChart = new BarChart12();
    CategoryChart chart = exampleChart.getChart();
    new SwingWrapper<CategoryChart>(chart).displayChart();
  }

  @Override
  public CategoryChart getChart() {

    // Create Chart
    CategoryChart chart = new CategoryChartBuilder().width(800).height(600).title("Temperature vs. Color").xAxisTitle("Color").yAxisTitle("Temperature").theme(ChartTheme.GGPlot2).build();

    // Customize Chart
    chart.getStyler().setPlotGridVerticalLinesVisible(false);

    CategorySeries[] categorySeries = new CategorySeries[5];

    // Series
    categorySeries[0] = chart.addSeries("fish", new ArrayList<String>(Arrays.asList(new String[]{"Blue", "Red", "Green", "Yellow", "Orange"})), new ArrayList<Number>(Arrays.asList(new Number[]{-40, 30, 20, 60,
        60})));
    categorySeries[1] = chart.addSeries("worms", new ArrayList<String>(Arrays.asList(new String[]{"Blue", "Red", "Green", "Yellow", "Orange"})), new ArrayList<Number>(Arrays.asList(new Number[]{50, 10, -20, 40,
        60})));
    categorySeries[2] = chart.addSeries("birds", new ArrayList<String>(Arrays.asList(new String[]{"Blue", "Red", "Green", "Yellow", "Orange"})), new ArrayList<Number>(Arrays.asList(new Number[]{13, 22, -23, -34,
        37})));
    categorySeries[3] = chart.addSeries("ants", new ArrayList<String>(Arrays.asList(new String[]{"Blue", "Red", "Green", "Yellow", "Orange"})), new ArrayList<Number>(Arrays.asList(new Number[]{50, 57, -14, -20,
        31})));
    categorySeries[4] = chart.addSeries("slugs", new ArrayList<String>(Arrays.asList(new String[]{"Blue", "Red", "Green", "Yellow", "Orange"})), new ArrayList<Number>(Arrays.asList(new Number[]{-2, 29, 49, -16,
        -43})));

    //Set the render style to SteppedBar, and make the fill transparent
    for (CategorySeries series : categorySeries) {
      series.setChartCategorySeriesRenderStyle(CategorySeriesRenderStyle.SteppedBar);
      series.setFillColor(new Color(0, 0, 0, 0));
    }

    return chart;
  }
}