I have a simple question but for some reason can't find the solution. As described here: highcharts documentation, I made the following script:
<script type="text/javascript">
$(document).ready(function() {
var options = {
chart: {
renderTo: 'container',
type: 'column',
},
title: {
text: 'Dagelijks waterverbruik'
},
subtitle: {
text: 'Waterverbruik in liters'
},
xAxis: {
categories: [
'Zondag',
'Maanag',
'Dinsdag',
'Woensdag',
'Donderdag',
'Vrijdag',
'Zaterdag'
]
},
yAxis: {
min: 0,
title: {
text: 'Waterverbruik (Liter)'
}
},
plotOptions: {
column: {
pointPadding: 0.2,
borderWidth: 0
}
},
series: [{}]
};
$.getJSON('testdata.php', function(data) {
options.series[0].data = data;
var chart = new Highcharts.Chart(options);
});
});
</script>
my testdata.php is as follows:
<?php
header('Content-Type: application/json');
$data[] = array('Zondag',11);
$data[] = array('Maandag',10);
$data[] = array('Dinsdag',9);
$data[] = array('Woensdag',8);
$data[] = array('Donderdag',12);
$data[] = array('Vrijdag',2);
$data[] = array('Zaterdag',18);
$serie1[] = array('name' => 'serie 1', 'data' => $data);
$serie1[] = array('name' => 'serie 2', 'data' => $data);
echo json_encode($serie1);
?>
For some reason the charts don't render. What am I doing wrong? One series is working this way, but multiple series don't.
As you can see I would expect two bars with the same value. The output of testdata.php is:
[{"name":"serie 1","data":[["Zondag",11],["Maandag",10],["Dinsdag",9],["Woensdag",8],["Donderdag",12],["Vrijdag",2],["Zaterdag",18]]},{"name":"serie 2","data":[["Zondag",11],["Maandag",10],["Dinsdag",9],["Woensdag",8],["Donderdag",12],["Vrijdag",2],["Zaterdag",18]]}]
You make the array like this and do not use categories in the $data array because you are using static categories in chart.following is a hint
$data = array(11,10,9,8,12,81);
$serie1[] = array('name' => 'serie 1', 'data' => $data);
$serie1[] = array('name' => 'serie 2', 'data' => $data);
echo json_encode($serie1);
In this part:
$.getJSON('testdata.php', function(data) {
options.series[0].data = data;
var chart = new Highcharts.Chart(options);
});
Change it to this
$.getJSON('testdata.php', function(data) {
options.series = data;
var chart = new Highcharts.Chart(options);
});
You current code can only accomodate one series since you specified an index to the series i.e. [0].
In the JSON you need to set JSON_NUMERIC_CHECK flag, because in your example it seems that you have no numebr values on data.
Related
I am trying to draw two graphs using chartjs. I want to make my life simplier by using a for loop to declare the variables required for the chart object.
The thing is I have created a 2d array, with each row storing data for current year, the next row storing data for the consecutive year and so on. I am trying to access the row of the variable using loop.
Here is my Chart obj
var canvas6= {
type: 'doughnut',
data: {
datasets: [{
data: [
<?php
for($i=0;$i<count($dataAgeGrp[1]);$i++){ -------->Note here
echo $dataAgeGrp[1][$i]; -------->And here
echo ',';
}
?>
],
backgroundColor: [
<?php
for($i=0;$i<count($ageCategory);$i++){
$rand = str_pad(dechex(rand(0, 0xFFFF00)), 6, 0, STR_PAD_LEFT);
echo('"#' . $rand.'"');
echo ",";
}
?>
],
label: 'Pie Chart'
}],
labels: [
<?php
for($i=0;$i<count($ageCategory);$i++){
echo $ageCategory[$i];
echo ',';
}
?>
],
},
options: {
responsive: true
}
};
$(function () {
var ctx126 = document.getElementById('canvas6').getContext('2d');
window.myPie = new Chart(ctx126 , canvas6);
});
So, I tried something like this
for(var k=0;k<3;k++){
var q=26;
var canvas+q = {
type: 'doughnut',
data: {
datasets: [{
data: [
<?php
for($i=0;$i<count($dataAgeGrp[k]);$i++){
echo $dataAgeGrp[k][$i];
echo ',';
}
?>
],
backgroundColor: [
<?php
for($i=0;$i<count($ageCategory);$i++){
$rand = str_pad(dechex(rand(0, 0xFFFF00)), 6, 0, STR_PAD_LEFT);
echo('"#' . $rand.'"');
echo ",";
}
?>
],
label: 'Pie Chart'
}],
labels: [
<?php
for($i=0;$i<count($ageCategory);$i++){
echo $ageCategory[$i];
echo ',';
}
?>
],
},
options: {
responsive: true
}
};
$(function () {
var ctx1+q = document.getElementById('canvas'+q).getContext('2d');
window.myPie = new Chart(ctx1+q , canvas+q);
});
q=q+1;
But I am getting this error
Use of undefined constant k - assumed 'k' (this will throw an Error in a future version of PHP)
How do I fix it?
If you can use PHP variables in your JavaScript code, the contrary is not possible. The only way to pass JavaScript variable to PHP code is by request (reload page with GET/POST parameters or AJAX request)
I have two arrays in PHP which I am trying to pass to a Chart to be displayed in Chartjs.
The following code creates the arrays by using a foreach on a multidimensional array to extract them.
<?php
$behaviours = orderByType($_SESSION['loggedStudent']['studentID']);
$behTypes = array();
$behValues = array();
foreach($behaviours as $item){
$behTypes[] = $item["type"];
$behValues[] = intval($item["count(*)"]);
}
// php arrays to JSON
$behaviourLabels = json_encode($behTypes, TRUE);
$behaviourValues = json_encode($behValues, TRUE);
?>
<canvas id="pie-chart" width="800" height="450"></canvas>
<script>
// parse to js
var strLables = <?php echo($behaviourLabels); ?>;
var strValues = <?php echo($behaviourValues); ?>;
// parse as array
var arrLables = JSON.parse($strLables);
var arrValues = JSON.parse($strValues);
new Chart(document.getElementById("pie-chart"), {
type: 'pie',
data: {
labels: arrLabels,
datasets: [{
label: "Incident Type",
backgroundColor: ["#3e95cd", "#8e5ea2","#3cba9f","#e8c3b9","#c45850"],
data: arrValues,
}]
},
options: {
title: {
display: true,
text: 'Breakdown of incident types for <?php echo($_SESSION['loggedStudent']['firstName']); ?>'
}
}
});
</script>
No chart or labels are showing. What am I doing wrong?
The expected values for both data and labels are array.
What you need to do is pass json to JavaScript.
// php arrays to JSON
$behaviourLabels = json_encode($behTypes);
$behaviourValues = json_encode($behValues);
Now in javascript
var arrLables = <?php echo($behaviourLabels); ?>;
var arrValues = <?php echo($behaviourValues); ?>;
// Now use them directly in you configuration
data: {
labels: arrLables,
datasets: [{
label: "Incident Type",
backgroundColor: ["#3e95cd", "#8e5ea2","#3cba9f","#e8c3b9","#c45850"],
data: arrValues,
}]
},
I do some calculations with below Code and after that i want to pass the values to the Chart but i can not send them i have try this:
$getStoreIDs = mysqli_query($dbConnection, "SELECT DISTINCT Stores_storeID FROM maintable WHERE Survey_surveyId = '$surveyID' ");
while ($row = mysqli_fetch_array($getStoreIDs))
{
$storeIDarray[] = $row;
}
foreach($_POST['sections'] as $selected)
{
foreach ($storeIDarray as $key => $row)
{
$storeID = $row['Stores_storeID'];
$storeNames= mysqli_query($dbConnection , "SELECT storeName FROM stores WHERE storeID = '".$row['Stores_storeID']."'");
$sectinName = mysqli_query($dbConnection , "SELECT sectionName FROM sections WHERE sectionID = '$selected' ");
$totalSections = mysqli_query($dbConnection, "SELECT SUM(itemPrice) AS totalSection FROM maintable WHERE items_Family_Sections_sectionID='$selected' AND Stores_storeID = '$storeID' AND Survey_surveyId = '$surveyID' ");
}
}
i want to pass the values of ($storeNames, $ectionName and $totalSelections)
and here is my CanvasJs code `
var chart1 = new CanvasJS.Chart("chartContainer1",
{
title:{
text: "Store Comparision"
},
animationEnabled: true,
axisY: {
title: "Total Price"
},
legend: {
verticalAlign: "bottom",
horizontalAlign: "center"
},
theme: "theme2",
data: [
{
type: "column",
showInLegend: true,
legendMarkerColor: "grey",
dataPoints: [
]
}
]
});
chart1.render();`
First you need to put your javascript code before canvas chart,it renders.
How you are passing data to your view is important.Are you passing as json object or array?
If as json then need to parse in javscript before sending encoded in php.
In datapoints paraemeter you can pass like this
dataPoints: JSON.parse(<?php echo json_encode($json_managers) ?>)
Or can do via PHP before sending (A sample code snippet)
$managers = DB::table('orders')
->join('managers', 'orders.manager_id', '=', 'managers.id')
->groupBy('managers.manager_name')
->get(['managers.manager_name',DB::raw("sum(orders.sale) as sale")]);
foreach($managers as $key => $value){
$point = array("label" => $value->manager_name , "y" => $value->sale);
array_push($data_manager_points, $point);
}
$json_managers = json_encode($data_manager_points,JSON_NUMERIC_CHECK);
For more get here :
http://canvasjs.com/forums/topic/how-can-i-use-php-mysql-dynamic-data/
I'm totally lost with Highcharts!. I have to draw a graph with multiple lines. I need a JSON output like this:
[{
"name": "2",
"data":
[1398333600000,1],[1398333600000,1],....
},
{
"name": "16",
"data":
[1398333600000,1],[1398333600000,1]...
},
{
....
....
}
]
...but, I get only a malformed JSON response from PHP file. ¿Some altruistic soul can enlighten the way? thank you very much in advance. Sorry, I am a super-newbie :(
My BD table Mysql:
i can´t upload a image with table BD on post, sorry! ...i need at least 10 reputation!
...link...
http://i57.tinypic.com/2efj43n.jpg
The javascript code:
chart = new Highcharts.Chart({
chart: {
renderTo: 'divStatsGrupo',
plotBackgroundColor: null,
plotBorderWidth: null,
plotShadow: false
},
title: {
text: titulo
},
tooltip: {
enabled: false,
},
xAxis: {
type: 'datetime',
dateTimeLabelFormats : {
hour: '%H:%M',
labels: {
style: {
width: '200px','min-width': '100px'
},
useHTML : true
}
}
},
yAxis: {
categories: [ 'APAGADO', 'ACTIVO', 'ALARMA'],
title: {
text: 'ESTADO'
},
min: 0
},
series : [{
showInLegend: true,
name : data.name,
type : 'line',
data: data.data
}]
});
});
And the PHP code:
require_once('Connections/conexion.php');
$sesionUser = $_SESSION['MM_Username'];
$sesionIdGrupo = $_GET['idGrupo'];
$sesionFechaActual = $_GET['fechaActual'];
///ARREGLO FECHA RECIBIDA PARA ADAPTARLA A FORMATO DE LA BD YY-MM-DD
$sesionFechaActualArreglo = date_format(new DateTime($sesionFechaActual),"Y-m-d");
mysql_select_db($database_conexion, $conexion);
$query_RecordsetTabla = "SELECT * FROM registros WHERE idUsuario = (SELECT idUsuario FROM usuarios WHERE userName = '$sesionUser') AND idGrupo = '$sesionIdGrupo' AND fecha = '$sesionFechaActualArreglo'";
$RecordsetTabla = mysql_query($query_RecordsetTabla, $conexion) or die(mysql_error());
$totalRows_RecordsetTabla = mysql_num_rows($RecordsetTabla);
$arr = array();
while ($row_RecordsetTabla = mysql_fetch_assoc($RecordsetTabla))
{
$idDispositivo = $row_RecordsetTabla['idDispositivo'];
$fecha = $row_RecordsetTabla['fecha'];
$hora = $row_RecordsetTabla['hora'];
$estado = $row_RecordsetTabla['estado'];
$arregloFecha = date_format(new DateTime($fecha),"Y-m-d");
$arregloHora = date_format(new DateTime($hora),"H:i");
$arregloHora2 = strtotime($arregloHora) * 1000;
$arr[] = array($arregloHora2, floatval($estado));
$arrDisp[] = array(floatval($idDispositivo));
}
$arr2 = array('data' => $arr, 'name' => $arrDisp);
echo json_encode($arr2);
mysql_free_result($RecordsetTabla);
I recieve this from PHP file...
{"data":[[1398330000000,1],[1398332700000,1],[1398331800000,1],[1398332700000,1]],"name":[[2],[2],[16],[16]]}
I think I have problems with arrays, Gracias!
You're very close. I kept the code as similar to yours so you can see the minor differences.
$items = array();
while ($row_RecordsetTabla = mysql_fetch_assoc($RecordsetTabla))
{
$idDispositivo = $row_RecordsetTabla['idDispositivo'];
$fecha = $row_RecordsetTabla['fecha'];
$hora = $row_RecordsetTabla['hora'];
$estado = $row_RecordsetTabla['estado'];
$arregloFecha = date_format(new DateTime($fecha),"Y-m-d");
$arregloHora = date_format(new DateTime($hora),"H:i");
$arregloHora2 = strtotime($arregloHora) * 1000;
// changed $arr and $arrDisp to scalar
$arr = array($arregloHora2, floatval($estado));
$arrDisp = array(floatval($idDispositivo));
// name and data should be put as part of a single array
$items[] = array ( 'data' => $arr , 'name' => $arrDisp );
}
// $arr2 = array('data' => $arr, 'name' => $arrDisp);
echo json_encode($items);
mysql_free_result($RecordsetTabla);
Please note I wasn't able to test it out, but if it does not work, let me know and I'll look at it further.
In your json_encode, I advice to set JSON_NUMERIC_CHECK, then numbers will not be a strings.
I want to retrieve data from mysql in the form of graph with the following code. But, nothing is shown. Can anybody help me?
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var jsonData = $.ajax({
url: "graphdata.php",
dataType:"json",
async: false
}).responseText;
// Create our data table out of JSON data loaded from server.
var data = new google.visualization.DataTable(jsonData);
var options = {'title':'Ticket Sales','width':500,'height':400};
// Instantiate and draw our chart, passing in some options.
var chart = new google.visualization.ColumnChart(document.getElementById('chart_div'));
chart.draw(data,options);
}
</script>
<?php
echo("<div id='chart_div'></div>");
?>
Here is my getdata.php:
$sql = "SELECT count(`booth_number`),`sold_by` FROM `registration1` where week(`Date`) = week(curdate()) GROUP BY `sold_by`";
$result = mysql_query($sql, $conn) or die(mysql_error());
//start the json data in the format Google Chart js/API expects to recieve it
$data = array(
'cols' => array(
array('label' => 'Month', 'type' => 'string'),
array('label' => 'Ticket Sales', 'type' => 'string')
),
'rows' => array()
);
while($row = mysql_fetch_row($result)) {
$data['rows'][] = array('c' => array(array('v' => $row[0]), array('v' => $row[1])));
}
echo json_encode($data);
As mentioned, I think you need to move your code inside the success callback:
function drawChart() {
$.ajax({
url: "graphdata.php",
type: "GET",
dataType:"json",
success: function(jsonData, textStatus, jqXHR) {
// Create our data table out of JSON data loaded from server.
var data = new google.visualization.DataTable(jsonData);
var options = {'title':'Ticket Sales','width':500,'height':400};
// Instantiate and draw our chart, passing in some options.
var chart = new google.visualization.ColumnChart(document.getElementById('chart_div'));
chart.draw(data,options);
}
});
}
[edit] A working example (with some mocked data) can be found on jsBin.
[edit2] Update the example on jsBin with the output provided in the duplicate question:
{
"cols": [
{
"label":"Month",
"type":"string"
},{
"label":"Weekly Sales",
"type":"string"
}
],
"rows": [
{
"c":[
{"v":"3"},
{"v":"jaspreet singh "}
]
},{
"c":[
{"v":"3"},
{"v":"joseph swanson"}
]
}
]
}
The JSON returned by the server is wrong, the object should look like this:
"cols": [
{
"label":"Month",
"type":"string"
},{
"label":"Weekly Sales",
"type":"number"
}
],
"rows": [
{
"c":[
{"v":"jaspreet singh "},
{"v":"3"}
]
},{
"c":[
{"v":"joseph swanson"},
{"v":"3"}
]
}
]
};
The changes needed should now be obvious. Hope this helps.
[edit3] getdata.php should contain the following snippet imho:
$data = array(
'cols' => array(
array('label' => 'Month', 'type' => 'string'),
array('label' => 'Ticket Sales', 'type' => 'number')
),
'rows' => array()
);
while($row = mysql_fetch_row($result)) {
$data['rows'][] = array(
'c' => array(
array('v' => $row[1]),
array('v' => $row[0])
)
);
}