मैं एक स्टैक्ड बार में प्रत्येक दिनांक सीमा के लिए एकाधिक स्टैक्ड कॉलम कैसे प्रदर्शित करूं?

सप्ताह/पाठ जोड़ने के लिए कॉलम के नीचे डेटा आपको लाइब्रेरी की श्रेणियां फ़ाइल जोड़नी है jquery.flot.categories.min.js आपकी जावास्क्रिप्ट संपत्तियों के लिए।

अगर मैं आपको सही ढंग से समझूं तो आप चाहते हैं कि चार्ट इस तरह दिखे

जावास्क्रिप्ट

आपको इन फ़ाइलों को

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="jquery.flot.min.js"></script>
<script src="jquery.flot.categories.min.js"></script>
<script src="jquery.flot.stack.min.js"></script>

और लाइब्रेरी को इनिशियलाइज़ करें हम बात करेंगे $output . के बारे में इस कोड के बाद

<div id="placeholder" style="width:818px;height:413px" ></div>
<script type="text/javascript">
$(function() {
    var series = [<?php echo $output; ?>];
       $.plot("#placeholder", series, {
        series: {
            stack:true,
            lines:{fill:true,show:false,steps:false},
            bars: {
                show: true,
                barWidth: 0.8,
                align: "middle",
            },
        },
        xaxis: {
            mode: "categories",
            minTickSize: 1
        }
       });
});

PHP

सबसे पहले आपको निर्दिष्ट तिथियों के बीच की तारीख खोजने के लिए डेटाबेस से पूछताछ करने की आवश्यकता है, परिणाम प्राप्त करने के बाद आपको प्रत्येक सप्ताह के डेटा को एक सरणी में सॉर्ट करना होगा

उदाहरण के लिए week One => 'good','good','bad','bad', 'week two' => and so on ...

उसके बाद आप array_count_values() का उपयोग कर सकते हैं घटनाओं की संख्या गिनने और चार्ट कॉलम बनाने के लिए।

मैंने functions . का उपयोग करके कोड को सरल बनाया आपके लिए इसे आसान बनाने के लिए

<?php
$con = mysqli_connect("localhost", 'root','','your db');

function getChartData($con, $startDate, $endDate){

    $startDate = date("Y-m-d H:i:s", strtotime($startDate));
    $endDate = date("Y-m-d H:i:s", strtotime($endDate));

    $query = "SELECT * FROM `employees` WHERE `date` BETWEEN '$startDate' AND '$endDate'";

    $result = mysqli_query($con, $query) or die ("Error: ".mysqli_error($con));

    // a multidimenional array containing each week with it's
    $weeksData = [];

    // Group each week with it's data 
    while($row = mysqli_fetch_array($result)){
        $weekNumber = date("W", strtotime($row['date']));
        if(isset($weeksData[$weekNumber]))
        {
            $weeksData[$weekNumber][] = $row['level'];
        }
        $weeksData[$weekNumber][] = $row['level'];
    }

    // reset array indexes and sort the array
    sort($weeksData);

    $data = array();

    // using array_count_values to count the number of (good, bad and excellent)
    foreach ($weeksData as $key => $week) {
        $data[$key] = array_count_values($week);
    }

    // return all the weeks with number of (good, bad and excellent) occurences 
    return $data;
}

// build the javascript object {data:['week num', occuerences]}
function buildColumn($data,$label, $numberOfWeeks)
{
    $data = array_column($data,strtolower($label));
    $balance = $numberOfWeeks - count($data);
    if($balance !=0){ 
        for($i=1;$i<=$balance;$i++) { 
            $data[] = 1; 
        } 
    }

    $string = '{data: [';
    foreach ($data as $key => $value) {
        $weekNumber = $key+1;
        $string .= '["Week '.$weekNumber.'",'.$value.'],';
    }
    $string = rtrim($string, ',');
    $string .= "],valueLabels: {show: true,valign: 'middle'},label: '$label'}";
    return $string;
}

function getNumberofWeeks($startDate, $endDate){
      $weeks = array();
      $period = new DatePeriod(new DateTime($startDate),
        DateInterval::createFromDateString('+1 day'),new DateTime($endDate) 
      );
      foreach ( $period as $dt ) {
        $weeks[] = $dt->format( 'W' );
      }
      return count(array_unique($weeks));
}  

अब आप इन कार्यों को आसानी से इस तरह उपयोग कर सकते हैं

$numberOfWeeks = getNumberofWeeks($_POST['start'],$_POST['end']);

// get data of the last number of weeks
$chartData = getChartData($con, $_POST['start'],$_POST['end']);
// bulding columns data for each occurence
$badColumn = buildColumn($chartData,'Bad', $numberOfWeeks);
$goodColumn = buildColumn($chartData,'Good', $numberOfWeeks);
$excellentColumn = buildColumn($chartData,'Excellent', $numberOfWeeks);

// output {data: ...}, {data: ...},{data:....}
$output = "$excellentColumn , $goodColumn , $badColumn";  

पूर्ण कार्य उदाहरण

<!DOCTYPE html>
<html>
<head>
    <title></title>
    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
    <script src="jquery.flot.min.js"></script>
    <script src="jquery.flot.categories.min.js"></script>
    <script src="jquery.flot.stack.min.js"></script>
</head>
<body>
<?php
$con = mysqli_connect("localhost", 'root','','your db');

function getChartData($con, $startDate, $endDate){

    $startDate = date("Y-m-d H:i:s", strtotime($startDate));
    $endDate = date("Y-m-d H:i:s", strtotime($endDate));

    $query = "SELECT * FROM `employees` WHERE `date` BETWEEN '$startDate' AND '$endDate'";

    $result = mysqli_query($con, $query) or die ("Error: ".mysqli_error($con));

    // a multidimenional array containing each week with it's
    $weeksData = [];

    // Group each week with it's data 
    while($row = mysqli_fetch_array($result)){
        $weekNumber = date("W", strtotime($row['date']));
        if(isset($weeksData[$weekNumber]))
        {
            $weeksData[$weekNumber][] = $row['level'];
        }
        $weeksData[$weekNumber][] = $row['level'];
    }

    // reset array indexes and sort the array
    sort($weeksData);

    $data = array();

    // using array_count_values to count the number of (good, bad and excellent)
    foreach ($weeksData as $key => $week) {
        $data[$key] = array_count_values($week);
    }

    // return all the weeks with number of (good, bad and excellent) occurences 
    return $data;
}

// build the javascript object {data:['week num', occuerences]}
function buildColumn($data,$label, $numberOfWeeks)
{
    $data = array_column($data,strtolower($label));
    $balance = $numberOfWeeks - count($data);
    if($balance !=0){ 
        for($i=1;$i<=$balance;$i++) { 
            $data[] = 1; 
        } 
    }

    $string = '{data: [';
    foreach ($data as $key => $value) {
        $weekNumber = $key+1;
        $string .= '["Week '.$weekNumber.'",'.$value.'],';
    }
    $string = rtrim($string, ',');
    $string .= "],valueLabels: {show: true,valign: 'middle'},label: '$label'}";
    return $string;
}

function getNumberofWeeks($startDate, $endDate){
      $weeks = array();
      $period = new DatePeriod(new DateTime($startDate),
        DateInterval::createFromDateString('+1 day'),new DateTime($endDate) 
      );
      foreach ( $period as $dt ) {
        $weeks[] = $dt->format( 'W' );
      }
      return count(array_unique($weeks));
}
// the number of weeks that you want to display in the chart
$numberOfWeeks = getNumberofWeeks($_POST['start'],$_POST['end']);

// get data of the last number of weeks
$chartData = getChartData($con, $_POST['start'],$_POST['end']);
// bulding columns data for each occurence
$badColumn = buildColumn($chartData,'Bad', $numberOfWeeks);
$goodColumn = buildColumn($chartData,'Good', $numberOfWeeks);
$excellentColumn = buildColumn($chartData,'Excellent', $numberOfWeeks);

// output {data: ...}, {data: ...},{data:....}
$output = "$excellentColumn , $goodColumn , $badColumn";

?>
<div id="placeholder" style="width:818px;height:413px" ></div>
<script type="text/javascript">
$(function() {
    var series = [<?php echo $output; ?>];
       $.plot("#placeholder", series, {
        series: {
            stack:true,
            lines:{fill:true,show:false,steps:false},
            bars: {
                show: true,
                barWidth: 0.8,
                align: "middle",
            },
        },
        xaxis: {
            mode: "categories",
            minTickSize: 1
        }
       });
});
  </script>
 </body>
</html> 

संपादित करें

इसे dd/mm/yyyy . के साथ संगत बनाने के लिए बस इन दो कार्यों को बदलें

 function getChartData($con, $startDate, $endDate){
    $startDate = explode('/', $startDate);
    $startDate = $startDate[1] . '/' . $startDate[0] . '/' . $startDate[2];

    $endDate = explode('/', $endDate);
    $endDate = $endDate[1] . '/' . $endDate[0] . '/' . $endDate[2];

    $startDate = date("Y-m-d H:i:s", strtotime($startDate));
    $endDate = date("Y-m-d H:i:s", strtotime($endDate));

    $query = "SELECT * FROM `employees` WHERE `date` BETWEEN '$startDate' AND '$endDate'";

    $result = mysqli_query($con, $query) or die ("Error: ".mysqli_error($con));

    // a multidimenional array containing each week with it's
    $weeksData = [];

    // Group each week with it's data 
    while($row = mysqli_fetch_array($result)){
        $weekNumber = date("W", strtotime($row['date']));
        if(isset($weeksData[$weekNumber]))
        {
            $weeksData[$weekNumber][] = $row['level'];
        }
        $weeksData[$weekNumber][] = $row['level'];
    }

    // reset array indexes and sort the array
    sort($weeksData);

    $data = array();

    // using array_count_values to count the number of (good, bad and excellent)
    foreach ($weeksData as $key => $week) {
        $data[$key] = array_count_values($week);
    }

    // return all the weeks with number of (good, bad and excellent) occurences 
    return $data;
}

और

   function getNumberofWeeks($startDate, $endDate){
    $startDate = explode('/', $startDate);
    $startDate = $startDate[1] . '/' . $startDate[0] . '/' . $startDate[2];

    $endDate = explode('/', $endDate);
    $endDate = $endDate[1] . '/' . $endDate[0] . '/' . $endDate[2];
    $diff = strtotime($startDate, 0) - strtotime($endDate, 0);

    return str_replace('-','', (int)floor($diff / 604800));
}