Question

构建XSSFScatterChartData并使用方法XSSFChart.plot(ChartData data, ChartAxis... chartAxis)填充后，该图包含标记，但是通过一行链接..

我认为问题来自方法XSSFScatterChartData.addStyle，它默认设置STScatterStyle.LINE_MARKER。

以下是我用于生成图表的方法的副本：

private void setTrainingTimeGraph(Sheet trainingTimeSheet, Sheet resultsSheet) {
  Drawing drawing = trainingTimeSheet.createDrawingPatriarch();
  ClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 5, 5, 20, 30);
  XSSFChart chart = (XSSFChart) drawing.createChart(anchor);
  ChartLegend legend = chart.getOrCreateLegend();
  legend.setPosition(LegendPosition.TOP_RIGHT);
  chart.setTitleText("Training time over Fscore");
  XSSFScatterChartData data = chart.getChartDataFactory().createScatterChartData();
  ValueAxis bottomAxis = chart.getChartAxisFactory().createValueAxis(AxisPosition.BOTTOM);
  ValueAxis leftAxis = chart.getChartAxisFactory().createValueAxis(AxisPosition.LEFT);
  setValueAxisTitle((XSSFChart) chart,0,"Fscore");
  setValueAxisTitle((XSSFChart) chart,1, "Training Time");
  leftAxis.setCrosses(AxisCrosses.AUTO_ZERO);
  bottomAxis.setCrosses(AxisCrosses.AUTO_ZERO);
  ChartDataSource<Number> xs = DataSources.fromNumericCellRange(resultsSheet, new CellRangeAddress(16, 29, 10, 10));
  ChartDataSource<Number> ys = DataSources.fromNumericCellRange(resultsSheet, new CellRangeAddress(16, 29, 18, 18));
  data.addSerie(xs, ys);
  chart.plot(data,bottomAxis, leftAxis);

}

更新

所以添加@AxelRichter代码设置为不填充我的散点图数据系列：

...
data.addSerie(xs, ys);
chart.plot(data,bottomAxis, leftAxis);
//set line properties of first scatter chart data serie to no fill:
((XSSFChart)chart).getCTChart().getPlotArea().getScatterChartArray(0).getSerArray(0)
    .addNewSpPr().addNewLn().addNewNoFill();

我设法摆脱连接标记的线。最后！

但第二部分并不是我想要的。让我更好地解释一下：

当我在我的scatterPlot中悬停每个点时，会弹出一些文字（"label/x_value"，x_value，y_value）。图例中的值与其"label/x_value"相同。我想为每个数据点和图例中的每个值设置"label/x_value"。

提前致谢！

Answer 1

String videoID = (String) ((JSONObject) ((JSONObject) jsonObject.getJSONArray("items").get(0)).get("id")).get("videoId");散点图也总是在标记之间有一条线。如果你不想看到这条线，它的填充颜色必须设置为无填充。

参考文献： CTScatterSer - ＆gt; CTShapeProperties - ＆gt; CTLineProperties - ＆gt; CTLineProperties.addNewNoFill

对于拥有数据标签，系列需要CTDLbl设置。

完整示例：

Excel

此代码需要FAQ-N10025中提到的所有模式import java.io.FileOutputStream; import org.apache.poi.ss.usermodel.*; import org.apache.poi.ss.usermodel.charts.*; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import org.apache.poi.xssf.usermodel.XSSFChart; import org.apache.poi.ss.util.CellRangeAddress; public class CreateExcelScatterChart { public static void main(String[] args) throws Exception { Workbook wb = new XSSFWorkbook(); Sheet sheet = wb.createSheet("chart"); final int NUM_OF_ROWS = 2; final int NUM_OF_COLUMNS = 20; Row row; Cell cell; for (int rowIndex = 0; rowIndex < 1; rowIndex++) { row = sheet.createRow((short) rowIndex); for (int colIndex = 0; colIndex < NUM_OF_COLUMNS; colIndex++) { cell = row.createCell((short) colIndex); cell.setCellValue(4*colIndex * (rowIndex + 1)); } } for (int rowIndex = 1; 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(Math.sin(Math.PI*colIndex/10*2)); } } Drawing<?> drawing = sheet.createDrawingPatriarch(); ClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 3, 13, 20); 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); bottomAxis.setCrosses(AxisCrosses.AUTO_ZERO); ChartDataSource<Number> xs = DataSources.fromNumericCellRange(sheet, new CellRangeAddress(0, 0, 0, NUM_OF_COLUMNS - 1)); ChartDataSource<Number> ys1 = DataSources.fromNumericCellRange(sheet, new CellRangeAddress(1, 1, 0, NUM_OF_COLUMNS - 1)); ScatterChartSeries chartSerie = data.addSerie(xs, ys1); chartSerie.setTitle("My Title"); chart.plot(data, bottomAxis, leftAxis); //set line properties of first scatter chart data serie to no fill: ((XSSFChart)chart).getCTChart().getPlotArea().getScatterChartArray(0).getSerArray(0) .addNewSpPr().addNewLn().addNewNoFill(); //set data labels for first scatter chart data serie ((XSSFChart)chart).getCTChart().getPlotArea().getScatterChartArray(0).getSerArray(0) .addNewDLbls() .addNewNumFmt().setFormatCode("0.0"); ((XSSFChart)chart).getCTChart().getPlotArea().getScatterChartArray(0).getSerArray(0) .getDLbls().getNumFmt() .setSourceLinked(false); ((XSSFChart)chart).getCTChart().getPlotArea().getScatterChartArray(0).getSerArray(0) .getDLbls() .addNewShowLegendKey().setVal(false); ((XSSFChart)chart).getCTChart().getPlotArea().getScatterChartArray(0).getSerArray(0) .getDLbls() .addNewShowCatName().setVal(false); ((XSSFChart)chart).getCTChart().getPlotArea().getScatterChartArray(0).getSerArray(0) .getDLbls() .addNewShowSerName().setVal(false); ((XSSFChart)chart).getCTChart().getPlotArea().getScatterChartArray(0).getSerArray(0) .getDLbls() .addNewShowPercent().setVal(false); ((XSSFChart)chart).getCTChart().getPlotArea().getScatterChartArray(0).getSerArray(0) .getDLbls() .addNewShowBubbleSize().setVal(false); ((XSSFChart)chart).getCTChart().getPlotArea().getScatterChartArray(0).getSerArray(0) .getDLbls() .addNewShowVal().setVal(true); wb.write(new FileOutputStream("CreateExcelScatterChart.xlsx")); wb.close(); } }的完整jar。

此代码使用当前的上一个稳定版本ooxml-schemas-1.3.jar版本apache poi。注意：3.17的{{1}}代码现在正在开发中。因此代码可能无法在其他版本中使用。

Answer 2

所以基于@Axel Richter的回复。

以下是用作基础的代码：

import java.io.FileOutputStream;

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.usermodel.charts.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.xssf.usermodel.XSSFChart;
import org.apache.poi.ss.util.CellRangeAddress;

public class CreateExcelScatterChart {

 public static void main(String[] args) throws Exception {

  Workbook wb = new XSSFWorkbook();
  Sheet sheet = wb.createSheet("chart");
  final int NUM_OF_ROWS = 2;
  final int NUM_OF_COLUMNS = 20;

  Row row;
  Cell cell;
  //x values
  for (int rowIndex = 0; rowIndex < 1; rowIndex++) {
    row = sheet.createRow((short) rowIndex);
    for (int colIndex = 0; colIndex < NUM_OF_COLUMNS; colIndex++) {
      cell = row.createCell((short) colIndex);
      cell.setCellValue(4*colIndex * (rowIndex + 1));
    }
  }
  // y values
  for (int rowIndex = 1; 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(Math.sin(Math.PI*colIndex/10*2));
    }
  }

  Drawing<?> drawing = sheet.createDrawingPatriarch();
  ClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 3, 13, 20);

  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);
  bottomAxis.setCrosses(AxisCrosses.AUTO_ZERO);
  for (int i = 0; i < NUM_OF_COLUMNS; i++) {
    ChartDataSource<Number> xs = DataSources.fromNumericCellRange(sheet, new CellRangeAddress(0, 0, i, i));
    ChartDataSource<Number> ys = DataSources.fromNumericCellRange(sheet, new CellRangeAddress(1, 1, i, i));

    ScatterChartSeries chartSerie = data.addSerie(xs, ys);
    chartSerie.setTitle("My Title " + i);
  }

  chart.plot(data, bottomAxis, leftAxis);

  //set line properties of first scatter chart data serie to no fill:
  CTScatterSer[] scatterChartSeries = ((XSSFChart) chart).getCTChart().getPlotArea().getScatterChartArray(0).getSerArray();
  for (int i = 0; i < scatterChartSeries.length; i++) {
    scatterChartSeries[i].addNewSpPr().addNewLn().addNewNoFill();
  }



  wb.write(new FileOutputStream("CreateExcelScatterChart.xlsx"));
  wb.close();

 }

}

当传递悬停时，它将生成20个系列，每个系列都带有标题，并且图例中的标题相同。每个标记之间没有线条。所以基本上它就是我正在寻找的东西。

感谢您的回答。

Ps：如果你想在每个标记上使用一些标签，请按@Richet答案上的//set data labels for first scatter chart data serie

ScatterChart使用LineMarker作为ScatterStyle而不是仅使用Marker

更新

2 个答案: