POI charts

https://svn.apache.org/repos/asf/poi/trunk/src/examples/src/org/apache/poi/xssf/usermodel/examples/ScatterChart.java

转载请注明出处尊重原创

package org.apache.poi.xssf.usermodel.examples;

import java.io.FileOutputStream;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.*;
import org.apache.poi.ss.usermodel.charts.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

/**
 * Illustrates how to create a simple scatter chart.
 *
 * @author Roman Kashitsyn
 */
public class ScatterChart {

    public static void main(String[] args) throws Exception {
        Workbook wb = new XSSFWorkbook();
        Sheet sheet = wb.createSheet("Sheet 1");
        final int NUM_OF_ROWS = 3;
        final int NUM_OF_COLUMNS = 10;

        // Create a row and put some cells in it. Rows are 0 based.
        Row row;
        Cell cell;
        for (int rowIndex = 0; rowIndex < NUM_OF_ROWS; rowIndex++) {
            row = sheet.createRow((short) rowIndex);
            for (int colIndex = 0; colIndex < NUM_OF_COLUMNS; colIndex++) {
                cell = row.createCell((short) colIndex);
                cell.setCellValue(colIndex * (rowIndex + 1));
            }
        }

        Drawing drawing = sheet.createDrawingPatriarch();
        ClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 5, 10, 15);

        Chart chart = drawing.createChart(anchor);
        ChartLegend legend = chart.getOrCreateLegend();
        legend.setPosition(LegendPosition.TOP_RIGHT);

        ScatterChartData data = chart.getChartDataFactory().createScatterChartData();

        ValueAxis bottomAxis = chart.getChartAxisFactory().createValueAxis(AxisPosition.BOTTOM);
        ValueAxis leftAxis = chart.getChartAxisFactory().createValueAxis(AxisPosition.LEFT);
        leftAxis.setCrosses(AxisCrosses.AUTO_ZERO);

        ChartDataSource xs = DataSources.fromNumericCellRange(sheet, new CellRangeAddress(0, 0, 0, NUM_OF_COLUMNS - 1));
        ChartDataSource ys1 = DataSources.fromNumericCellRange(sheet, new CellRangeAddress(1, 1, 0, NUM_OF_COLUMNS - 1));
        ChartDataSource ys2 = DataSources.fromNumericCellRange(sheet, new CellRangeAddress(2, 2, 0, NUM_OF_COLUMNS - 1));


        data.addSerie(xs, ys1);
        data.addSerie(xs, ys2);

        chart.plot(data, bottomAxis, leftAxis);

        // Write the output to a file
        FileOutputStream fileOut = new FileOutputStream("ooxml-scatter-chart.xlsx");
        wb.write(fileOut);
        fileOut.close();
    }
}