SetSerieDescription - pChart不工作

Question

我正在尝试为条形图的x轴分配一个标签，该标签是一个存储在$gsettings‘’axisXlabel‘下的数组中的普通文本字符串。不幸的是，pCharts SetSerieDescription似乎没有像预期的那样工作。

下面是生成图形的函数和当前输出的附件。有趣的部分是/*下面的3行将数据序列绑定到X轴*/

/**
* function to plot bar charts
*/
function cg_graphs_plot_bar_graph($gdata, $gsettings){

  $graph_data = new pData();

  if(isset($gdata['bar_plots2'])){ //if this is set, its a duel bar graph
    $graph_data->addPoints($gdata['bar_plots'],"surgeondata");
    $graph_data->addPoints(array(0,0,0,0),"surgeondatanull");
    $graph_data->addPoints($gdata['bar_plots2'],"everyonedata");
    $graph_data->addPoints(array(0,0,0,0),"everyonedatanull");
    $graph_data->setSerieDrawable(array("everyonedatanull"), FALSE);
    $graph_data->setSerieDescription("surgeondata",$gdata['surgeonname']);
    $graph_data->setSerieDescription("everyonedata","All Surgeons");
    $graph_data->setAxisUnit(0,"%");

    $surgeon = array("R"=>21,"G"=>0,"B"=>0); //surgeon series colour
    $all = array("R"=>191,"G"=>160,"B"=>36); //everyone series colour
    $graph_data->setPalette("surgeondata",$surgeon);
    $graph_data->setPalette("everyonedata",$all);
    $graph_data->setPalette("surgeondatanull",$surgeon);
    $graph_data->setPalette("everyonedatanull",$all);

  } else {
    $graph_data->addPoints($gdata['bar_plots'],"percentiles");
    $graph_data->addPoints($gdata['surgeon_bar'],"surgeonbar");
    $graph_data->setSerieDrawable(array("surgeonbar"), FALSE);
  }
  $graph_data->setAxisName(0,$gsettings['axisYlabel']);
  /* Bind a data serie to the X axis */
  $graph_data->addPoints($gdata['xaxis_names'],"Labels");
  $graph_data->setSerieDescription("Labels",$gsettings['axisXlabel']);
  $graph_data->setAbscissa("Labels");

  $width=540;
  $height=419;

  $chart = new pImage($width,$height,$graph_data);
  $chart->drawFromJPG(0,0,drupal_get_path('module', 'cg_graphs')."/images/graphbg.jpg");

  /* Write the picture title */ 
  $chart->setFontProperties(array("FontName"=>drupal_get_path('module', 'cg_graphs')."/pChart/fonts/ARIAL.TTF","FontSize"=>8));
  $chart->setFontProperties(array("R"=>0,"G"=>0,"B"=>0));
  $chart->drawText(270,70,$gsettings['title'],array("R"=>0,"G"=>0,"B"=>0,"Align"=>TEXT_ALIGN_MIDDLEMIDDLE, "FontSize" => 12));

  /* Set the graph area */
  $chart->setGraphArea(70,120,490,310);

  /* Draw a rectangle */
  $chart->drawFilledRectangle(70,120,489,309,array("R"=>255,"G"=>255,"B"=>255,"Dash"=>FALSE, "BorderR"=>201,"BorderG"=>201,"BorderB"=>201));

  /* Turn on shadow computing */ 
  $chart->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>20));

    $format = array(
        "DisplayValues"=>FALSE,
        "DisplayColor"=>DISPLAY_AUTO,
        "Rounded"=>FALSE,
        "Gradient"=>TRUE,
        "GradientAlpha"=>100,
        "GradientMode"=>GRADIENT_EFFECT_CAN,
        "GradientStartR"=>251,
        "GradientStartG"=>220,
        "GradientStartB"=>96,
        "GradientEndR"=>191,
        "GradientEndG"=>160,
        "GradientEndtB"=>36
    );

  if(isset($gdata['bar_plots2'])){
      /* Draw the scale */
      $chart->drawScale(array("XMargin"=>50, "Mode"=>SCALE_MODE_MANUAL, "ManualScale"=> $gsettings['maxmin'], "Pos" => SCALE_POS_LEFTRIGHT,'DrawXLines' => FALSE, 'GridTicks' => 500,'GridR'=>0,'GridG'=>0,'GridB'=>0, 'LabelRotation'=>0, 'AroundZero' => TRUE, 'Interleave' => 0.1));

      $graph_data->setSerieDrawable(array("surgeondata"), FALSE);
      $graph_data->setSerieDrawable(array("surgeondatanull"), TRUE);
  } else {
    /* Draw the scale*/
  $chart->drawScale(array("XMargin"=>40, "Mode"=>SCALE_MODE_MANUAL, "ManualScale"=> $gsettings['maxmin'], "Pos" => SCALE_POS_LEFTRIGHT,'DrawXLines' => FALSE, 'GridTicks' => 500,'GridR'=>0,'GridG'=>0,'GridB'=>0, 'LabelRotation'=>0, 'AroundZero' => TRUE));
  }

  $chart->drawBarChart($format);

  //draw next bar with new colour.
  $format = array(
        "DisplayValues"=>FALSE,
        "DisplayColor"=>DISPLAY_AUTO,
        "Rounded"=>FALSE,
        "Gradient"=>TRUE,
        "GradientAlpha"=>100,
        "GradientMode"=>GRADIENT_EFFECT_CAN,
        "GradientStartR"=>255,
        "GradientStartG"=>230,
        "GradientStartB"=>126,
        "GradientEndR"=>21,
        "GradientEndG"=>0,
        "GradientEndtB"=>0
  );

  if(!isset($gdata['bar_plots2'])){ //not set? we need to draw the second one.
    //set draw series to false / true here

    $graph_data->setSerieDrawable(array("percentiles"), FALSE);
    $graph_data->setSerieDrawable(array("surgeonbar"), TRUE);

    $chart->drawBarChart($format);
  } else {
    $graph_data->setSerieDrawable(array("surgeondatanull", "everyonedata"), FALSE);
    $graph_data->setSerieDrawable(array("surgeondata", "everyonedatanull"), TRUE);

    $chart->drawBarChart($format);
    $graph_data->setSerieDrawable(array("everyonedatanull"), FALSE);
    $graph_data->setSerieDrawable(array("everyonedata"), TRUE);
    $chart->drawLegend(190,100,array("Style"=>LEGEND_NOBORDER, "Mode" => LEGEND_HORIZONTAL)); //draw legand
  }

  $imagename = str_replace(' ', '-', $gdata['surgeonname']);
  $chart->render(drupal_get_path('module', 'cg_graphs')."/pChart/examples/pictures/".$imagename."-".$gsettings['name'].".png");
}

这是输出，我想给X轴加上标签，目前标签没有显示。(抱歉，删除标题等，数据还不在公共领域，需要删除名称)

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Answer 1

您需要使用http://wiki.pchart.net/doc.dataset.setabscissaname.html中定义的函数setAbscissaName

示例：

$MyData->setAbscissaName("Months");

这将在ticks下的X轴上显示Months。

Answer 2

pChart文档一团糟。我发现了一两个文档与源代码不同的错误。他们的命名方案也需要改进。除了创造者之外，这对任何人都是不直观的。

我相信您正在尝试将标签添加到X轴。为此，您需要使用setXAxisName()。

出现在setSerieDescription()代码中的"Temperature“是一个字符串，用于将这组序列数据绑定到该名称。它实际上不是出现在图表上的标签(同名)。它是在setAbscissa()中再次使用的名称。