Java Apache POI管理散点图

我正在使用ApachePOI

库，版本为ApachePOI4.1.1

。 我使用的示例

ScatterChart.java

创建了一个散射图，但图中有线而不是点

有什么建议吗

这就是我得到的：

这就是我想要的：

---

Excel中的默认散点图在数据点之间总是有线条

如果您正在查看示例代码，则有一个方法

private static void solidLineSeries

将这些行格式化为具有彩色填充

您需要的是一个

私有静态void setLineNoFill

，它在数据点之间设置一条未填充的线

另外，您需要使用和设置标记样式和标记大小

完整示例：

import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xddf.usermodel.*;
import org.apache.poi.xddf.usermodel.chart.*;
import org.apache.poi.xssf.usermodel.*;

/**
 * Illustrates how to create a simple scatter chart.
 */
public class ScatterChart {

    public static void main(String[] args) throws IOException {
        try (XSSFWorkbook wb = new XSSFWorkbook()) {
            XSSFSheet 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 + 1.0));
                }
            }

            XSSFDrawing drawing = sheet.createDrawingPatriarch();
            XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 5, 10, 15);

            XSSFChart chart = drawing.createChart(anchor);
            XDDFChartLegend legend = chart.getOrAddLegend();
            legend.setPosition(LegendPosition.TOP_RIGHT);

            XDDFValueAxis bottomAxis = chart.createValueAxis(AxisPosition.BOTTOM);
            bottomAxis.setTitle("x"); // https://stackoverflow.com/questions/32010765
            XDDFValueAxis leftAxis = chart.createValueAxis(AxisPosition.LEFT);
            leftAxis.setTitle("f(x)");
            leftAxis.setCrosses(AxisCrosses.AUTO_ZERO);

            XDDFDataSource<Double> xs = XDDFDataSourcesFactory.fromNumericCellRange(sheet, new CellRangeAddress(0, 0, 0, NUM_OF_COLUMNS - 1));
            XDDFNumericalDataSource<Double> ys1 = XDDFDataSourcesFactory.fromNumericCellRange(sheet, new CellRangeAddress(1, 1, 0, NUM_OF_COLUMNS - 1));
            XDDFNumericalDataSource<Double> ys2 = XDDFDataSourcesFactory.fromNumericCellRange(sheet, new CellRangeAddress(2, 2, 0, NUM_OF_COLUMNS - 1));


            XDDFScatterChartData data = (XDDFScatterChartData) chart.createData(ChartTypes.SCATTER, bottomAxis, leftAxis);
            XDDFScatterChartData.Series series1 = (XDDFScatterChartData.Series) data.addSeries(xs, ys1);
            series1.setTitle("2x", null); // https://stackoverflow.com/questions/21855842
            series1.setSmooth(false); // https://stackoverflow.com/questions/39636138

            series1.setMarkerStyle(MarkerStyle.CIRCLE);
            series1.setMarkerSize((short)5);
            setLineNoFill(series1);

            XDDFScatterChartData.Series series2 = (XDDFScatterChartData.Series) data.addSeries(xs, ys2);
            series2.setTitle("3x", null);

            series2.setMarkerStyle(MarkerStyle.CIRCLE);
            series2.setMarkerSize((short)5);
            setLineNoFill(series2);

            chart.plot(data);

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

    private static void setLineNoFill(XDDFScatterChartData.Series series) {
        XDDFNoFillProperties noFillProperties = new XDDFNoFillProperties();
        XDDFLineProperties lineProperties = new XDDFLineProperties();
        lineProperties.setFillProperties(noFillProperties);
        XDDFShapeProperties shapeProperties = series.getShapeProperties();
        if (shapeProperties == null) shapeProperties = new XDDFShapeProperties();
        shapeProperties.setLineProperties(lineProperties);
        series.setShapeProperties(shapeProperties);
    }
}

import java.io.FileOutputStream；
导入java.io.IOException；
导入org.apache.poi.ss.usermodel.*；
导入org.apache.poi.ss.util.CellRangeAddress；
导入org.apache.poi.xddf.usermodel.*；
导入org.apache.poi.xddf.usermodel.chart.*；
导入org.apache.poi.xssf.usermodel.*；
/**
*演示如何创建简单的散点图。
*/
公共类散点图{
公共静态void main（字符串[]args）引发IOException{
尝试（XSSFWorkbook wb=new XSSFWorkbook（））{
XSSFSheet sheet=wb.createSheet（“第1张”）；
行的最终整数=3；
_列的最终int NUM_=10；
//创建一行并在其中放置一些单元格。行基于0。
行行；
细胞；
for（int-rowIndex=0；rowIndex

答案取决于创建散点图所使用的apache poi版本和代码。请在您的问题中提供这两个。嗨，Axel，我使用的是ApachePOI的4.1.1版本。请编辑您的问题并提供所有必要的信息。什么代码用于创建散点图？请在您的问题中提供该代码。嗨，阿克塞尔，在我的代码中，setLineNoFill遗漏了。谢谢