0

私は pchart でチャートを作成しようとしましたが、このリンク (公式ウェブサイト) のようにしました:

https://wiki.pchart.net/doc.mysql.integration.html

しかし、このエラーが発生するたびに!!

致命的なエラー: 39 行目の C:\xampp\htdocs\pChart2.1.0\examples\test2.php の非オブジェクトに対するメンバー関数 addPoints() の呼び出し

ヘルプ ！！

ここに私の完全なコードがあります:

     /* CAT:Line chart */

 /* pChart library inclusions */
 include("../class/pData.class.php");
 include("../class/pDraw.class.php");
 include("../class/pImage.class.php");

 /* Create and populate the pData object */
 $MyData = new pData();  

 /* Connect to the MySQL database */
$db = mysql_connect("localhost", "root", "");
mysql_select_db("pchart",$db);


/* Build the query that will returns the data to graph */
$Requete = "SELECT * FROM `measures`";
$Result = mysql_query($Requete,$db);
while($row = mysql_fetch_array($Result))
{
/* Push the results of the query in an array */
$timestamp[] = $row["timestamp"];
$temperature[] = $row["temperature"];
$humidity[] = $row["humidity"];



}
/* Save the data in the pData array */
$myData->addPoints($timestamp,"Timestamp");
$myData->addPoints($temperature,"Temperature");
$myData->addPoints($humidity,"Humidity");

 /* Create the pChart object */
 $myPicture = new pImage(700,230,$MyData);

 /* Turn of Antialiasing */
 $myPicture->Antialias = FALSE;

 /* Add a border to the picture */
 $myPicture->drawRectangle(0,0,699,229,array("R"=>0,"G"=>0,"B"=>0));

 /* Write the chart title */ 
 $myPicture->setFontProperties(array("FontName"=>"../fonts/Forgotte.ttf","FontSize"=>11));
 $myPicture->drawText(150,35,"Average temperature",array("FontSize"=>20,"Align"=>TEXT_ALIGN_BOTTOMMIDDLE));

 /* Set the default font */
 $myPicture->setFontProperties(array("FontName"=>"../fonts/pf_arma_five.ttf","FontSize"=>6));

 /* Define the chart area */
 $myPicture->setGraphArea(60,40,650,200);

 /* Draw the scale */
 $scaleSettings = array("XMargin"=>10,"YMargin"=>10,"Floating"=>TRUE,"GridR"=>200,"GridG"=>200,"GridB"=>200,"DrawSubTicks"=>TRUE,"CycleBackground"=>TRUE);
 $myPicture->drawScale($scaleSettings);

 /* Turn on Antialiasing */
 $myPicture->Antialias = TRUE;

 /* Draw the line chart */
 $myPicture->drawLineChart();

 /* Write the chart legend */
 $myPicture->drawLegend(540,20,array("Style"=>LEGEND_NOBORDER,"Mode"=>LEGEND_HORIZONTAL));

 /* Render the picture (choose the best way) */
 $myPicture->autoOutput("pictures/example.drawLineChart.simple.png");

どうもありがとう。

4

3 に答える 3

3 
 include("../class/pDraw.class.php");
 include("../class/pImage.class.php");
 include("../class/pData.class.php");
$db = mysql_connect("localhost", "root", "");
mysql_select_db("test",$db);
$query = "SELECT `temperature` FROM `measures`";
$result  = mysql_query($query,$db);
$cpu="";

while($row = mysql_fetch_array($result)) 
{
   $timestamp[] = $row["timestamp"];
   $temperature[] = $row["temperature"];
   $humidity[] = $row["humidity"];
}
$myData = new pData();
$myData->addPoints($timestamp,"Timestamp");
$myData->addPoints($temperature,"Temperature");
$myData->addPoints($humidity,"Humidity");

 $myData->setAbscissa("Timestamp");
 $myData->setSerieOnAxis("Humidity", 1);
 $myData->setXAxisName("Time");
  //$myData->setXAxisDisplay(AXIS_FORMAT_TIME,"H:i");
  $myData->setAxisName(0,"Temperature");
 $myData->setAxisUnit(0,"°C");
 /* Second Y axis will be dedicated to humidity */
 $myData->setAxisName(1,"Humidity");
 $myData->setAxisUnit(0,"%");
$myPicture = new pImage(700,230,$myData); 
$myPicture->setGraphArea(60,40,670,190);
$myPicture->setFontProperties(array("FontName"=>"../fonts/Forgotte.ttf","FontSize"=>15));
$myPicture->drawScale();
$myPicture->drawPlotChart();
$myPicture->Stroke();
于 2011-12-09T23:36:59.720 に答える
3

大文字の M を使用して MyData を newData として定義します

/* Create and populate the pData object */
$MyData = new pData();

大文字のMなしで使用します

$myData->addPoints($timestamp,"Timestamp");
$myData->addPoints($temperature,"Temperature");
$myData->addPoints($humidity,"Humidity");
于 2011-12-13T10:29:48.103 に答える
1

ページが pData.class.php に正しくリンクされていることを確認します。非オブジェクトのメンバー関数を呼び出そうとすると、多くの場合、作業を行っているページでクラスが利用できないことを示します。特定のコードが表示されない場合、これ以上支援することは困難になります。

于 2011-02-25T17:29:27.100 に答える