在PHPExcel中创建条形图

Question

我正在尝试按照33-chartcreate-composite-chart.php示例在PHPExcel中创建条形图。

调用createExcelGraph()之前的代码会创建屏幕截图中显示的工作表。生成的图表将添加到工作表中，但生成的文件不包含图形，或者更好，不显示任何图形。 Excel在文件加载期间未报告任何错误。

private function createExcelStats($occurrences, $labels, $ticks, $graphLabel) {
  require_once __SITE_PATH . 'libraries\Excel\PHPExcel.php';

  $objPHPExcel = new PHPExcel();
  $objPHPExcel->getProperties()->setCreator("eOccurrence"); 
  $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, "Excel2007");

  $objSheet = $objPHPExcel->getActiveSheet();
  $objSheet->setTitle($graphLabel);

  /* writing x-axis */
  for ($i=1;$i<=count($ticks);$i++) {
    $objSheet->setCellValueByColumnAndRow($i, 1, $ticks[$i-1]);
  }
  /* writing y-axis */
  for ($i=1;$i<=count($labels);$i++) {
    $objSheet->setCellValueByColumnAndRow(0, $i+1, $labels[$i-1]['label']);
  }

  /* writing content */
  for ($i=0;$i<count($labels);$i++){
    for ($j=0;$j<count($ticks);$j++){
      $objSheet->setCellValueByColumnAndRow($j+1, $i+2, $occurrences[$i][$j]);
    }    
  }

  $ch = $this->createExcelGraph(count($ticks), count($labels));
  $objSheet->addChart($ch);  

  $this->checkdir(__SITE_PATH . 'uploads' . DIRECTORY_SEPARATOR . 'tmp' . DIRECTORY_SEPARATOR);
  removeoldfiles(__SITE_PATH . 'uploads' . DIRECTORY_SEPARATOR . 'tmp' . DIRECTORY_SEPARATOR, 'xlsx');
  $filename =  $graphLabel . '.xlsx';

  $objWriter->save(__SITE_PATH . 'uploads' . DIRECTORY_SEPARATOR . 'tmp' . DIRECTORY_SEPARATOR .  $filename);
  return ['code' => '0', 'filename' => $filename];
}

/*----------------------------------------------------------------------------*/

private function createExcelGraph($cols, $rows) {
/* Κάνουμε την υπόθεση ότι το πάνω αριστερό κελί του πίνακα βρίσκεται στο B2 */  

//  Set the Labels for each data series we want to plot
//      Datatype
//      Cell reference for data
//      Format Code
//      Number of datapoints in series
//      Data values
//      Data Marker
  $dataSeriesLabels = array();
  for ($i=1;$i<=$rows;$i++) {    
    $dataSeriesLabels[] = new PHPExcel_Chart_DataSeriesValues('String', 'Worksheet!$A$' . ($i+1), NULL, 1);
  }
//  Set the X-Axis Labels
//      Datatype
//      Cell reference for data
//      Format Code
//      Number of datapoints in series
//      Data values
//      Data Marker
  $col = $this->columnLetter($cols+1);
  $xAxisTickValues = array(    
    new PHPExcel_Chart_DataSeriesValues('String', 'Worksheet!$B$1:$' . $col . '$1', NULL, $cols)
  );
//  Set the Data values for each data series we want to plot
//      Datatype
//      Cell reference for data
//      Format Code
//      Number of datapoints in series
//      Data values
//      Data Marker
  $dataSeriesValues = array();
//  for ($i=1;$i<=$rows;$i++) {    
//    $dataSeriesValues[] = new PHPExcel_Chart_DataSeriesValues('Number', 'Worksheet!$B$'. ($i+1) . ':$' . $col .'$' . ($i+1), NULL, $cols);
//  }
  for ($i=1;$i<=$cols;$i++) {
    $col = $this->columnLetter($i+1);
    $dataSeriesValues[] = new PHPExcel_Chart_DataSeriesValues('Number', 'Worksheet!$' . $col . '$2:$' . $col . '$' . ($rows+1), NULL, $rows);
  }        
//  Build the dataseries
$series = new PHPExcel_Chart_DataSeries(
    PHPExcel_Chart_DataSeries::TYPE_BARCHART,       // plotType
    PHPExcel_Chart_DataSeries::GROUPING_CLUSTERED,  // plotGrouping
    range(0, count($dataSeriesValues)-1),           // plotOrder
    $dataSeriesLabels,                              // plotLabel
    $xAxisTickValues,                               // plotCategory
    $dataSeriesValues                               // plotValues
);
//  Set additional dataseries parameters
//      Make it a horizontal bar rather than a vertical column graph
$series->setPlotDirection(PHPExcel_Chart_DataSeries::DIRECTION_BAR);

//  Set the series in the plot area
$plotArea = new PHPExcel_Chart_PlotArea(NULL, array($series));
//  Set the chart legend
$legend = new PHPExcel_Chart_Legend(PHPExcel_Chart_Legend::POSITION_RIGHT, NULL, false);

$title = new PHPExcel_Chart_Title('Test Bar Chart');
$yAxisLabel = new PHPExcel_Chart_Title('Value ($k)');


//  Create the chart
$chart = new PHPExcel_Chart(
    'chart1',       // name
    $title,         // title
    $legend,        // legend
    $plotArea,      // plotArea
    true,           // plotVisibleOnly
    0,              // displayBlanksAs
    NULL,           // xAxisLabel
    $yAxisLabel     // yAxisLabel
);

//  Set the position where the chart should appear in the worksheet
$chart->setTopLeftPosition('A7');
$chart->setBottomRightPosition('H5');

//  Add the chart to the worksheet
//$objWorksheet->addChart($chart);  
return $chart;
}

Answer 1

编写电子表格文件时，您必须告诉Writer包含图表：

$objWriter->setIncludeCharts(TRUE);