ng-admin and google maps - php

I am working on a project that uses ng-admin as framework and I am totally new with angular, etc.
The thing is that I need to use google maps with that, because I have one Entity with Latitude and Longitude.
But I have no idea about how I'm gonna do that.
here's what I have done:
gstation.creationView()
.fields([
nga.field('latitude')
.validation({ required: true }),
nga.field('longitude')
.validation({ required: true }),
nga.field('fk_company', 'reference')
.isDetailLink(false)
.label('Company')
.targetEntity(companies)
.targetField(nga.field('name'))
]);
I don't know if there's an easy way to do that or if I need to do that my way.
I can always start something to make that work, but I don't want to create something my way, instead of follow a pattern (if exists).
Any ideas?
Thank you.

This is what i did.
Include Angular Google maps from here
http://angular-ui.github.io/angular-google-maps
Create a directive for geo code. This is what i did
https://gist.github.com/vkumarsharma/f019f6116844442c609d
Include the directive as field in you config.js
nga.field('user_location', 'template')
.validation({required: true })
.label('Map Location')
.template('<geocode geocode="value"></geocode>'),
You should see the map in you edit or create view where you should be able to set the marker.

Just to complement the answer of #Vikas..
I could make that work by changing to this:
myApp.directive('geocode', ['$location', function ($location) {
return {
restrict: 'E',
scope: {
geocode: '=bind',
},
link: function($scope, uiGmapIsReady) {
var iLat, iLong;
if ($scope.geocode && $scope.geocode.latitude !== undefined) {
iLat = parseFloat($scope.geocode.latitude);
iLong = parseFloat($scope.geocode.longitude);
} else {
iLat = 19.090555;
iLong = 72.888684;
$scope.geocode = new Object;
$scope.geocode.__type = "GeoPoint";
$scope.geocode.latitude = iLat;
$scope.geocode.longitude = iLong;
}
var maps = { center: { latitude: iLat, longitude: iLong }, zoom: 12 };
$scope.map = maps;
$scope.options = {scrollwheel: false};
$scope.marker = {
id: 0,
coords: {
latitude: iLat,
longitude: iLong
},
options: { draggable: true },
events: {
dragend: function (marker, eventName, args) {
$scope.geocode.latitude = marker.getPosition().lat();
$scope.geocode.longitude = marker.getPosition().lng();
var latlng = {lat: parseFloat($scope.geocode.latitude), lng: parseFloat($scope.geocode.longitude)};
$scope.marker.options = {
draggable: true,
labelContent: $scope.address,
labelAnchor: "100 0",
labelClass: "marker-labels"
};
}
}
};
},
template:
`
<div class="row list-view">
<div class="col-lg-12">
<ui-gmap-google-map center="map.center" zoom="map.zoom" draggable="true" options="options" pan=true refresh="true">
<ui-gmap-marker coords="marker.coords" options="marker.options" events="marker.events" idkey="marker.id">
</ui-gmap-marker>
</ui-gmap-google-map>
</div>
</div>
`
};}]);
myApp.config(function (uiGmapGoogleMapApiProvider) {
uiGmapGoogleMapApiProvider.configure({
key: '',
v: '3',
libraries: 'visualization'
});});

Related

how to this line chart update mysql data using php ajax [duplicate]

I created an basic bar chart using chartjs and it works fine. Now I want to update the values on a time based interval. My problem is that after I created the chart, I do not know how to update its values correctly...
My code:
var ctx = $("#myChart").get(0).getContext("2d");
var dts = [
{
fillColor: "rgba(220,220,220,0.5)",
strokeColor: "rgba(220,220,220,1)",
data: [0, 0, 0, 0, 0]
}
];
var data = {
labels: ["Core#1", "Core#2", "Core#3", "Core#4", "Total"],
datasets: dts
};
var chart = new Chart(ctx);
chart.Bar(data);
//test code
setInterval( function () {
data.datasets[0].data = [random(), random(), random(), random(), random()];
chart.Bar(data);
},2000);
in the test code, I am updating the values with datasets[0].data- is this the right way to do it? The problem with this is that everytime I call chart.Bar(), the values are reset to 0 then animated to the random value (like I am recreating the chart). This way, all animations are always from 0 to value which looks strange. I would expect that if I update a value from 50 to 10 the bar would go down to 10 from 50 and not setted to 0 then animated to 10.
I did not found anything in the docs about this... am I doing something wrong or this is impossible with this library?
Update: Looks like chartjs has been updated (see comment below). There are some examples up that look very nice:
Here's an example of updating a line chart using new data: http://jsbin.com/yitep/5/edit
Here's how we can update existing data on a line chart: http://jsbin.com/yitep/4/edit
Original Post
As of Nov 2013, there seem to be very few options for updating charts.
There is a good example here (duplicated below) of adding new points to a line chart. Still kind of jumpy but not too bad. However, I think the effect probably depends on the chart you are using.
It does look like this is somewhere in the development pipeline. I don't see any indication of a release date yet though: https://github.com/nnnick/Chart.js/issues/13 [Closed as of Jul 26, 2014]
JS
$(document).ready(function(){
var count = 10;
var data = {
labels : ["1","2","3","4","5", "6", "7", "8", "9", "10"],
datasets : [
{
fillColor : "rgba(220,220,220,0.5)",
strokeColor : "rgba(220,220,220,1)",
pointColor : "rgba(220,220,220,1)",
pointStrokeColor : "#fff",
data : [65,59,90,81,56,45,30,20,3,37]
},
{
fillColor : "rgba(151,187,205,0.5)",
strokeColor : "rgba(151,187,205,1)",
pointColor : "rgba(151,187,205,1)",
pointStrokeColor : "#fff",
data : [28,48,40,19,96,87,66,97,92,85]
}
]
}
// this is ugly, don't judge me
var updateData = function(oldData){
var labels = oldData["labels"];
var dataSetA = oldData["datasets"][0]["data"];
var dataSetB = oldData["datasets"][1]["data"];
labels.shift();
count++;
labels.push(count.toString());
var newDataA = dataSetA[9] + (20 - Math.floor(Math.random() * (41)));
var newDataB = dataSetB[9] + (20 - Math.floor(Math.random() * (41)));
dataSetA.push(newDataA);
dataSetB.push(newDataB);
dataSetA.shift();
dataSetB.shift(); };
var optionsAnimation = {
//Boolean - If we want to override with a hard coded scale
scaleOverride : true,
//** Required if scaleOverride is true **
//Number - The number of steps in a hard coded scale
scaleSteps : 10,
//Number - The value jump in the hard coded scale
scaleStepWidth : 10,
//Number - The scale starting value
scaleStartValue : 0
}
// Not sure why the scaleOverride isn't working...
var optionsNoAnimation = {
animation : false,
//Boolean - If we want to override with a hard coded scale
scaleOverride : true,
//** Required if scaleOverride is true **
//Number - The number of steps in a hard coded scale
scaleSteps : 20,
//Number - The value jump in the hard coded scale
scaleStepWidth : 10,
//Number - The scale starting value
scaleStartValue : 0
}
//Get the context of the canvas element we want to select
var ctx = document.getElementById("myChart").getContext("2d");
var optionsNoAnimation = {animation : false}
var myNewChart = new Chart(ctx);
myNewChart.Line(data, optionsAnimation);
setInterval(function(){
updateData(data);
myNewChart.Line(data, optionsNoAnimation)
;}, 2000
);
});
// ChartJS
var Chart=function(s){function v(a,c,b){a=A((a-c.graphMin)/(c.steps*c.stepValue),1,0);return b*c.steps*a}function x(a,c,b,e){function h(){g+=f;var k=a.animation?A(d(g),null,0):1;e.clearRect(0,0,q,u);a.scaleOverlay?(b(k),c()):(c(),b(k));if(1>=g)D(h);else if("function"==typeof a.onAnimationComplete)a.onAnimationComplete()}var f=a.animation?1/A(a.animationSteps,Number.MAX_VALUE,1):1,d=B[a.animationEasing],g=a.animation?0:1;"function"!==typeof c&&(c=function(){});D(h)}function C(a,c,b,e,h,f){var d;a=
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1)))}for(d=0;d<a.labels.length;d++){b.font=c.pointLabelFontStyle+" "+c.pointLabelFontSize+"px "+c.pointLabelFontFamily;b.fillStyle=c.pointLabelFontColor;var f=Math.sin(e*d)*(g+c.pointLabelFontSize),h=Math.cos(e*d)*(g+c.pointLabelFontSize);b.textAlign=e*d==Math.PI||0==e*d?"center":e*d>Math.PI?"right":"left";b.textBaseline="middle";b.fillText(a.labels[d],f,-h)}b.restore()},function(d){var e=2*Math.PI/a.datasets[0].data.length;b.save();b.translate(q/2,u/2);for(var g=0;g<a.datasets.length;g++){b.beginPath();
b.moveTo(0,d*-1*v(a.datasets[g].data[0],j,k));for(var f=1;f<a.datasets[g].data.length;f++)b.rotate(e),b.lineTo(0,d*-1*v(a.datasets[g].data[f],j,k));b.closePath();b.fillStyle=a.datasets[g].fillColor;b.strokeStyle=a.datasets[g].strokeColor;b.lineWidth=c.datasetStrokeWidth;b.fill();b.stroke();if(c.pointDot){b.fillStyle=a.datasets[g].pointColor;b.strokeStyle=a.datasets[g].pointStrokeColor;b.lineWidth=c.pointDotStrokeWidth;for(f=0;f<a.datasets[g].data.length;f++)b.rotate(e),b.beginPath(),b.arc(0,d*-1*
v(a.datasets[g].data[f],j,k),c.pointDotRadius,2*Math.PI,!1),b.fill(),b.stroke()}b.rotate(e)}b.restore()},b)},I=function(a,c,b){for(var e=0,h=Math.min.apply(Math,[u/2,q/2])-5,f=0;f<a.length;f++)e+=a[f].value;x(c,null,function(d){var g=-Math.PI/2,f=1,j=1;c.animation&&(c.animateScale&&(f=d),c.animateRotate&&(j=d));for(d=0;d<a.length;d++){var l=j*a[d].value/e*2*Math.PI;b.beginPath();b.arc(q/2,u/2,f*h,g,g+l);b.lineTo(q/2,u/2);b.closePath();b.fillStyle=a[d].color;b.fill();c.segmentShowStroke&&(b.lineWidth=
c.segmentStrokeWidth,b.strokeStyle=c.segmentStrokeColor,b.stroke());g+=l}},b)},J=function(a,c,b){for(var e=0,h=Math.min.apply(Math,[u/2,q/2])-5,f=h*(c.percentageInnerCutout/100),d=0;d<a.length;d++)e+=a[d].value;x(c,null,function(d){var k=-Math.PI/2,j=1,l=1;c.animation&&(c.animateScale&&(j=d),c.animateRotate&&(l=d));for(d=0;d<a.length;d++){var m=l*a[d].value/e*2*Math.PI;b.beginPath();b.arc(q/2,u/2,j*h,k,k+m,!1);b.arc(q/2,u/2,j*f,k+m,k,!0);b.closePath();b.fillStyle=a[d].color;b.fill();c.segmentShowStroke&&
(b.lineWidth=c.segmentStrokeWidth,b.strokeStyle=c.segmentStrokeColor,b.stroke());k+=m}},b)},K=function(a,c,b){var e,h,f,d,g,k,j,l,m,t,r,n,p,s=0;g=u;b.font=c.scaleFontStyle+" "+c.scaleFontSize+"px "+c.scaleFontFamily;t=1;for(d=0;d<a.labels.length;d++)e=b.measureText(a.labels[d]).width,t=e>t?e:t;q/a.labels.length<t?(s=45,q/a.labels.length<Math.cos(s)*t?(s=90,g-=t):g-=Math.sin(s)*t):g-=c.scaleFontSize;d=c.scaleFontSize;g=g-5-d;e=Number.MIN_VALUE;h=Number.MAX_VALUE;for(f=0;f<a.datasets.length;f++)for(l=
0;l<a.datasets[f].data.length;l++)a.datasets[f].data[l]>e&&(e=a.datasets[f].data[l]),a.datasets[f].data[l]<h&&(h=a.datasets[f].data[l]);f=Math.floor(g/(0.66*d));d=Math.floor(0.5*(g/d));l=c.scaleShowLabels?c.scaleLabel:"";c.scaleOverride?(j={steps:c.scaleSteps,stepValue:c.scaleStepWidth,graphMin:c.scaleStartValue,labels:[]},z(l,j.labels,j.steps,c.scaleStartValue,c.scaleStepWidth)):j=C(g,f,d,e,h,l);k=Math.floor(g/j.steps);d=1;if(c.scaleShowLabels){b.font=c.scaleFontStyle+" "+c.scaleFontSize+"px "+c.scaleFontFamily;
for(e=0;e<j.labels.length;e++)h=b.measureText(j.labels[e]).width,d=h>d?h:d;d+=10}r=q-d-t;m=Math.floor(r/(a.labels.length-1));n=q-t/2-r;p=g+c.scaleFontSize/2;x(c,function(){b.lineWidth=c.scaleLineWidth;b.strokeStyle=c.scaleLineColor;b.beginPath();b.moveTo(q-t/2+5,p);b.lineTo(q-t/2-r-5,p);b.stroke();0<s?(b.save(),b.textAlign="right"):b.textAlign="center";b.fillStyle=c.scaleFontColor;for(var d=0;d<a.labels.length;d++)b.save(),0<s?(b.translate(n+d*m,p+c.scaleFontSize),b.rotate(-(s*(Math.PI/180))),b.fillText(a.labels[d],
0,0),b.restore()):b.fillText(a.labels[d],n+d*m,p+c.scaleFontSize+3),b.beginPath(),b.moveTo(n+d*m,p+3),c.scaleShowGridLines&&0<d?(b.lineWidth=c.scaleGridLineWidth,b.strokeStyle=c.scaleGridLineColor,b.lineTo(n+d*m,5)):b.lineTo(n+d*m,p+3),b.stroke();b.lineWidth=c.scaleLineWidth;b.strokeStyle=c.scaleLineColor;b.beginPath();b.moveTo(n,p+5);b.lineTo(n,5);b.stroke();b.textAlign="right";b.textBaseline="middle";for(d=0;d<j.steps;d++)b.beginPath(),b.moveTo(n-3,p-(d+1)*k),c.scaleShowGridLines?(b.lineWidth=c.scaleGridLineWidth,
b.strokeStyle=c.scaleGridLineColor,b.lineTo(n+r+5,p-(d+1)*k)):b.lineTo(n-0.5,p-(d+1)*k),b.stroke(),c.scaleShowLabels&&b.fillText(j.labels[d],n-8,p-(d+1)*k)},function(d){function e(b,c){return p-d*v(a.datasets[b].data[c],j,k)}for(var f=0;f<a.datasets.length;f++){b.strokeStyle=a.datasets[f].strokeColor;b.lineWidth=c.datasetStrokeWidth;b.beginPath();b.moveTo(n,p-d*v(a.datasets[f].data[0],j,k));for(var g=1;g<a.datasets[f].data.length;g++)c.bezierCurve?b.bezierCurveTo(n+m*(g-0.5),e(f,g-1),n+m*(g-0.5),
e(f,g),n+m*g,e(f,g)):b.lineTo(n+m*g,e(f,g));b.stroke();c.datasetFill?(b.lineTo(n+m*(a.datasets[f].data.length-1),p),b.lineTo(n,p),b.closePath(),b.fillStyle=a.datasets[f].fillColor,b.fill()):b.closePath();if(c.pointDot){b.fillStyle=a.datasets[f].pointColor;b.strokeStyle=a.datasets[f].pointStrokeColor;b.lineWidth=c.pointDotStrokeWidth;for(g=0;g<a.datasets[f].data.length;g++)b.beginPath(),b.arc(n+m*g,p-d*v(a.datasets[f].data[g],j,k),c.pointDotRadius,0,2*Math.PI,!0),b.fill(),b.stroke()}}},b)},L=function(a,
c,b){var e,h,f,d,g,k,j,l,m,t,r,n,p,s,w=0;g=u;b.font=c.scaleFontStyle+" "+c.scaleFontSize+"px "+c.scaleFontFamily;t=1;for(d=0;d<a.labels.length;d++)e=b.measureText(a.labels[d]).width,t=e>t?e:t;q/a.labels.length<t?(w=45,q/a.labels.length<Math.cos(w)*t?(w=90,g-=t):g-=Math.sin(w)*t):g-=c.scaleFontSize;d=c.scaleFontSize;g=g-5-d;e=Number.MIN_VALUE;h=Number.MAX_VALUE;for(f=0;f<a.datasets.length;f++)for(l=0;l<a.datasets[f].data.length;l++)a.datasets[f].data[l]>e&&(e=a.datasets[f].data[l]),a.datasets[f].data[l]<
h&&(h=a.datasets[f].data[l]);f=Math.floor(g/(0.66*d));d=Math.floor(0.5*(g/d));l=c.scaleShowLabels?c.scaleLabel:"";c.scaleOverride?(j={steps:c.scaleSteps,stepValue:c.scaleStepWidth,graphMin:c.scaleStartValue,labels:[]},z(l,j.labels,j.steps,c.scaleStartValue,c.scaleStepWidth)):j=C(g,f,d,e,h,l);k=Math.floor(g/j.steps);d=1;if(c.scaleShowLabels){b.font=c.scaleFontStyle+" "+c.scaleFontSize+"px "+c.scaleFontFamily;for(e=0;e<j.labels.length;e++)h=b.measureText(j.labels[e]).width,d=h>d?h:d;d+=10}r=q-d-t;m=
Math.floor(r/a.labels.length);s=(m-2*c.scaleGridLineWidth-2*c.barValueSpacing-(c.barDatasetSpacing*a.datasets.length-1)-(c.barStrokeWidth/2*a.datasets.length-1))/a.datasets.length;n=q-t/2-r;p=g+c.scaleFontSize/2;x(c,function(){b.lineWidth=c.scaleLineWidth;b.strokeStyle=c.scaleLineColor;b.beginPath();b.moveTo(q-t/2+5,p);b.lineTo(q-t/2-r-5,p);b.stroke();0<w?(b.save(),b.textAlign="right"):b.textAlign="center";b.fillStyle=c.scaleFontColor;for(var d=0;d<a.labels.length;d++)b.save(),0<w?(b.translate(n+
d*m,p+c.scaleFontSize),b.rotate(-(w*(Math.PI/180))),b.fillText(a.labels[d],0,0),b.restore()):b.fillText(a.labels[d],n+d*m+m/2,p+c.scaleFontSize+3),b.beginPath(),b.moveTo(n+(d+1)*m,p+3),b.lineWidth=c.scaleGridLineWidth,b.strokeStyle=c.scaleGridLineColor,b.lineTo(n+(d+1)*m,5),b.stroke();b.lineWidth=c.scaleLineWidth;b.strokeStyle=c.scaleLineColor;b.beginPath();b.moveTo(n,p+5);b.lineTo(n,5);b.stroke();b.textAlign="right";b.textBaseline="middle";for(d=0;d<j.steps;d++)b.beginPath(),b.moveTo(n-3,p-(d+1)*
k),c.scaleShowGridLines?(b.lineWidth=c.scaleGridLineWidth,b.strokeStyle=c.scaleGridLineColor,b.lineTo(n+r+5,p-(d+1)*k)):b.lineTo(n-0.5,p-(d+1)*k),b.stroke(),c.scaleShowLabels&&b.fillText(j.labels[d],n-8,p-(d+1)*k)},function(d){b.lineWidth=c.barStrokeWidth;for(var e=0;e<a.datasets.length;e++){b.fillStyle=a.datasets[e].fillColor;b.strokeStyle=a.datasets[e].strokeColor;for(var f=0;f<a.datasets[e].data.length;f++){var g=n+c.barValueSpacing+m*f+s*e+c.barDatasetSpacing*e+c.barStrokeWidth*e;b.beginPath();
b.moveTo(g,p);b.lineTo(g,p-d*v(a.datasets[e].data[f],j,k)+c.barStrokeWidth/2);b.lineTo(g+s,p-d*v(a.datasets[e].data[f],j,k)+c.barStrokeWidth/2);b.lineTo(g+s,p);c.barShowStroke&&b.stroke();b.closePath();b.fill()}}},b)},D=window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||window.oRequestAnimationFrame||window.msRequestAnimationFrame||function(a){window.setTimeout(a,1E3/60)},F={}};
HTML
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
</head>
<body>
<h1>Live Updating Chart.js</h1>
<canvas id="myChart" width="400" height="150"></canvas>
</body>
</html>
The update() triggers an update of the chart.
chart.update( )
.update(config)
Triggers an update of the chart. This can be safely called after updating the data object. This will update all scales, legends, and then re-render the chart. A config object can be provided with additional configuration for the update process.
update() can be safely called after updating values of one or more existing points within the the data object, rendering the changes in one animated render loop.
// update the first dataset's value of 'March' to be 50
myBarChart.data.datasets[0].bars[2].value = 50;
// animate update of 'March' from 90 to 50.
myBarChart.update();
Here is how to do it in the last version of ChartJs:
setInterval(function(){
chart.data.datasets[0].data[5] = 80;
chart.data.labels[5] = "Newly Added";
chart.update();
}
Look at this clear video
or test it in jsfiddle
You also can use destroy() function. Like this
if( window.myBar!==undefined)
window.myBar.destroy();
var ctx = document.getElementById("canvas").getContext("2d");
window.myBar = new Chart(ctx).Bar(barChartData, {
responsive : true,
});
You just need to change the chartObject.data.datasets value and call update() like this:
chartObject.data.datasets = newData.datasets;
chartObject.data.labels = newData.labels;
chartObject.update();
Remove the canvas dom and add in again.
function renderChart(label,data){
$("#canvas-wrapper").html("").html('<canvas id="storeSends"></canvas>');
var lineChartData = {
labels : label,
datasets : [
{
fillColor : "rgba(49, 195, 166, 0.2)",
strokeColor : "rgba(49, 195, 166, 1)",
pointColor : "rgba(49, 195, 166, 1)",
pointStrokeColor : "#fff",
data : data
}
]
}
var canvas = document.getElementById("storeSends");
var ctx = canvas.getContext("2d");
myLine = new Chart(ctx).Line(lineChartData, {
responsive: true,
maintainAspectRatio: false
});
}
I think the easiest way is to write a function to update your chart including the chart.update()method. Check out this simple example I wrote in jsfiddle for a Bar Chart.
//value for x-axis
var emotions = ["calm", "happy", "angry", "disgust"];
//colours for each bar
var colouarray = ['red', 'green', 'yellow', 'blue'];
//Let's initialData[] be the initial data set
var initialData = [0.1, 0.4, 0.3, 0.6];
//Let's updatedDataSet[] be the array to hold the upadted data set with every update call
var updatedDataSet;
/*Creating the bar chart*/
var ctx = document.getElementById("barChart");
var barChart = new Chart(ctx, {
type: 'bar',
data: {
labels: emotions,
datasets: [{
backgroundColor: colouarray,
label: 'Prediction',
data: initialData
}]
},
options: {
scales: {
yAxes: [{
ticks: {
beginAtZero: true,
min: 0,
max: 1,
stepSize: 0.5,
}
}]
}
}
});
/*Function to update the bar chart*/
function updateBarGraph(chart, label, color, data) {
chart.data.datasets.pop();
chart.data.datasets.push({
label: label,
backgroundColor: color,
data: data
});
chart.update();
}
/*Updating the bar chart with updated data in every second. */
setInterval(function() {
updatedDataSet = [Math.random(), Math.random(), Math.random(), Math.random()];
updateBarGraph(barChart, 'Prediction', colouarray, updatedDataSet);
}, 1000);
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.3.0/Chart.min.js"></script>
<body>
<div>
<h1>Update Bar Chart</h1>
<canvas id="barChart" width="800" height="450"></canvas>
</div>
<script src="barchart.js"></script>
</body>
</head>
</html>
Hope this helps.
If destroy() and clear() is not working (just like what i had experience) you can use jquery to remove the canvas and append it again.
$('#chartAmazon').remove();
$('#chartBar').append('<canvas id="chartAmazon"></canvas>');
var ctxAmazon = $("#chartAmazon").get(0).getContext("2d");
var AmazonChart = new Chart(ctxAmazon, {
type: 'doughnut',
data: dataAmazon,
options: optionsA
});
I don't think it's possible right now.
However that's a feature which should come soon, as the author hinted here:
https://github.com/nnnick/Chart.js/issues/161#issuecomment-20487775
This is an example with ChartJs - 2.9.4
var maximumPoints = 5;// with this variable you can decide how many points are display on the chart
function addData(chart, label, data) {
chart.data.labels.push(label);
chart.data.datasets.forEach((dataset) => {
var d = data[0];
dataset.data.push(d);
data.shift();
});
var canRemoveData = false;
chart.data.datasets.forEach((dataset) => {
if (dataset.data.length > maximumPoints) {
if (!canRemoveData) {
canRemoveData = true;
chart.data.labels.shift();
}
dataset.data.shift();
}
});
chart.update();
}
window.onload = function () {
var canvas = document.getElementById('elm-chart'),
ctx = canvas.getContext('2d');
var myLineChart = new Chart(ctx, {
type: 'line',
data: {
labels: [],
datasets: [
{
data: [],
label: 'Dataset-1',
backgroundColor: "#36a2eb88",
borderColor: "#36a2eb",
},
{
data: [],
label: 'Dataset-2',
backgroundColor: "#ff638488",
borderColor: "#ff6384",
}
],
},
options: {
responsive: false,
maintainAspectRatio: false,
scales: {
yAxes: [{
ticks: {
beginAtZero: true
}
}]
}
}
});
var index = 0;
setInterval(function () {
var data = [];
myLineChart.data.datasets.forEach((dataset) => {
data.push(Math.random() * 100);
});
addData(myLineChart, index, data);
index++;
}, 1000);
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.4/Chart.min.js"></script>
<canvas id="elm-chart" width="640" height="480"></canvas>
There are 2 ways to solve it:
chart.update()
Delete existing chart using chart.destroy() and create new chart object.
The simplest way is to replace the canvas element and then call new Chart() again:
function reloadMyChart() {
$('myChart').replaceWith('<canvas id="myChart"></canvas>');
new Chart(document.getElementById("myChart"), {
data: yourChartData,
type: yourChartType,
options: yourChartOptions
});
}
Of course, you must replace yourChartData, yourChartType and yourChartOptions with the correct values required to initialize Chart.js. See Chart.js Docs.
You can call reloadMyChart function on a button click or any other event you need. Probably you'll add parameters to this function and use these to make a REST call to dynamically update your chart, like this:
function reloadMyChart(param1, param2) {
$('myChart').replaceWith('<canvas id="myChart"></canvas>');
$.get("restUrl?param1=" + param1 + "&param2=" + param2 + ",
function(data) {
// call new Chart() here and use returned data
}
);
Hope it helps! =)
Showing realtime update chartJS
function add_data(chart, label, data)
{
var today = new Date();
var time = today.getHours() + ":" + today.getMinutes() + ":" + today.getSeconds();
myLineChart.data.datasets[0].data.push(Math.random() * 100);
myLineChart.data.datasets[1].data.push(Math.random() * 100);
myLineChart.data.labels.push(time)
myLineChart.update();
}
setInterval(add_data, 10000); //milisecond
full code , you can download in description link
As of 2022 and using ChartJS v3.7.1 you can use the code below.
Note that it is based on the JSBin snippets in doub1ejack's answer but these were not up to date and wouldn't work with the latest ChartJS version, mainly because the path to charts' data changed (now being yourChart._metasets[0]._dataset.data).
var canvas = document.getElementById('updating-chart'),
ctx = canvas.getContext('2d'),
startingData = {
labels: [1, 2, 3, 4, 5, 6, 7],
datasets: [
{
fillColor: "rgba(220,220,220,0.2)",
strokeColor: "rgba(220,220,220,1)",
pointColor: "rgba(220,220,220,1)",
pointStrokeColor: "#fff",
data: [65, 59, 80, 81, 56, 55, 40]
},
{
fillColor: "rgba(151,187,205,0.2)",
strokeColor: "rgba(151,187,205,1)",
pointColor: "rgba(151,187,205,1)",
pointStrokeColor: "#fff",
data: [28, 48, 40, 19, 86, 27, 90]
}
]
};
// Reduce the animation steps for demo clarity.
const myLiveChart = new Chart(ctx, {
type: 'bar',
data: startingData,
options: {
scales: {
y: {
beginAtZero: true
}
},
maintainAspectRatio: false,
}
});
setInterval(function(){
// Get a random index point
var indexToUpdate = Math.round(Math.random() * startingData.labels.length);
// Update one of the points in the second dataset
myLiveChart._metasets[0]._dataset.data[indexToUpdate] = Math.random() * 100;
myLiveChart.update();
}, 5000);
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Updating chart example</title>
<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
</head>
<body>
<canvas id="updating-chart" width="500" height="300"></canvas>
</body>
</html>
You can check instance of Chart by using Chart.instances.
This will give you all the charts instances.
Now you can iterate on that instances and and change the data, which is present inside config.
suppose you have only one chart in your page.
for (var _chartjsindex in Chart.instances) {
/*
* Here in the config your actual data and options which you have given at the
time of creating chart so no need for changing option only you can change data
*/
Chart.instances[_chartjsindex].config.data = [];
// here you can give add your data
Chart.instances[_chartjsindex].update();
// update will rewrite your whole chart with new value
}
My solve was to actually store the charts outside of the state of Vue. Store the charts in a const variable in like a utility.js file. Then I was able to simply do this:
const PVR_CANVASES = {}
//This was my vue method for building the charts
build_metrics() {
this.votingResults.metrics.forEach(metric => {
const el = document.getElementById(metric.metric_data.canvas);
const n_chart = new Chart(el, {
type: 'line',
data: metric.chart.data,
options: {
responsive: true,
maintainAspectRatio: true,
layout: {
autoPadding: false
},
plugins: {
legend: {
display: false,
}
},
scales: {
x: {
display: false
},
y: {
display: false
}
},
elements: {
line: {
tension: 0.4
},
point: {
backgroundColor: 'rgba(0, 0, 0, 0.1)'
}
}
}
});
PVR_CANVASES[metric.chart.id] = n_chart;
})
}
//UPDATE CHART IS THIS SIMPLE
this.votingResults.metrics.forEach(metric => {
const n_chart = PVR_CANVASES[metric.chart.id];
n_chart.data = metric.chart.data;
n_chart.update();
});
So simple, Just replace the chart canvas element.
$('#canvas').replaceWith(' id="canvas" height="200px"
width="368px">');

How to populate Jvector Map with countries from database?

(I am new to Javascript and jQuery..) I have a dashboard and I want to display a map that shows the countries where participants of a particular event are coming from. With this, I opted with Jvector Map. I am having a hard time displaying the countries in the map, coming from my database.
dashboard.js
var mapData = {};
$('#world-map').vectorMap({
map: 'world_mill_en',
backgroundColor: "transparent",
regionStyle: {
initial: {
fill: '#e4e4e4',
"fill-opacity": 0.9,
stroke: 'none',
"stroke-width": 0,
"stroke-opacity": 0
}
},
series: {
regions: [{
values: function() {
$.ajax({
url:"includes/sql/fetchcountries.php",
method:"GET",
data:mapData,
dataType:"json",
success: function(data){
mapData = data;
console.log(mapData);
}
})
},
scale: ["#1ab394", "#22d6b1"],
normalizeFunction: 'polynomial'
}]
},
});
fetch.php
<?php
require '../auth/dbh.inc.auth.php';
$id = $_SESSION['ntc_id'];
$stmt = $conn->prepare("SELECT DISTINCT(participants.p_country) FROM ntc_participants
INNER JOIN participants ON participants.p_id=ntc_participants.p_id_fk
WHERE ntc_participants.ntc_id_fk=?");
$data = array();
mysqli_stmt_bind_param($stmt, "i", $id);
$stmt->execute();
$result = $stmt->get_result();
if($result->num_rows === 0);
if($row = $result->fetch_assoc()) {
$data[] = [
$row['p_country'] => 0 ]; //the value 0 is just a placeholder.. The jvector map feeds on this format: "US":298, "SA": 200
}
echo json_encode($data);
?>
Could anyone be gracious enough to walk me through all the wrong things I'm doing in my code? Appreciate all the help! :)
Ajax is asynchronous, so You are creating the map before the data has been downloaded.
Initialize the map with empty values for Your region:
$('#world-map').vectorMap({
...
values: {}
...
});
Then, whenever You need to show the data, set it dynamically:
$.get("includes/sql/fetchcountries.php", function(data) {
var mapObj = $("#world-map").vectorMap("get", "mapObject");
mapObj.series.regions[0].setValues(data);
});
During the ajax invocation and data download maybe You can show a spinner (please look at beforeSend inside the jQuery full ajax documentation: https://api.jquery.com/jquery.ajax/).
Here is the reference for setValues:
http://jvectormap.com/documentation/javascript-api/jvm-dataseries/
http://api.worldbank.org/v2/country/all/indicator/NY.GDP.PCAP.PP.CD?format=json&date=2018
This link will give you up-to-date stats for most common indicators via json - and then you can pluck whatever data that you like. I don't have all the code yet, as I am working on this today too.
This answers the question above whenever your database can also present JSON
document.addEventListener('DOMContentLoaded', () => {
console.log("loaded")
fetchCountryData()
})
function fetchCountryData () {
fetch('http://api.worldbank.org/v2/country/all/indicator/NY.GDP.PCAP.PP.CD?format=json&date=2018')
//
.then(resp => resp.json())
.then(data => {
let country.id = data[1]
let indicator.id = data[1]
create-GDP-Data(country.id,indicator.id)
})
}
function create-GDP-Data(country.id,indicator.id){
let gdpData = ?
}
$('#world-map-gdp').vectorMap({
map: 'world_mill',
series: {
regions: [{
values: gdpData,
scale: ['#C8EEFF', '#0071A4'],
normalizeFunction: 'polynomial'
}]
},
onRegionTipShow: function(e, el, code){
el.html(el.html()+' (GDP - '+gdpData[code]+')');
}
});

How to autocomplete bootstrap tokenfield with ajax?

I want to use the tokenfield for bootstrap: http://sliptree.github.io/bootstrap-tokenfield/ but I can't seem to find any documentation on how to do it using AJAX. I have a .php file with json data like this {"Hello", "Helium", "Hell"} and I want it to be the autocomplete values. Please note that the .php file only returns values that are similar to what is being typed. Can anyone find a way to do this? Any help would be highly appreciated. I just wanna use that gorgeous bootstrap tokenfield to autocomplete tags and disallow autocomplete if the word's don't exist there.
Thanks.
You need to implement either autocomplete from jquery-ui or typeahead from twitter, and then apply specific options.
$('#activity_tag_tokens').tokenfield({
typeahead: {
prefetch: '/tags.json',
remote: '/tags.json?q=%QUERY',
}
});
Bootstrap tokenfield - typeahead autocomplete with remote call using ajax
Prerequisitics:
= stylesheet_link_tag 'sales_crm/tokenfield-typeahead.css'
= stylesheet_link_tag 'sales_crm/bootstrap-tokenfield.css'
%script{:src => "//code.jquery.com/ui/1.10.3/jquery-ui.js", :type => "text/javascript"}
= javascript_include_tag "sales_crm/bootstrap-tokenfield.js"
= javascript_include_tag "sales_crm/typeahead.bundle.min.js"
In HAML View File:
%input#tokenfield-typeahead.form-control.add_locality_data{:type => "text", :value => "", :identifier=> "Locality"}/
1) Initialize the BloodHound search engine
var engine = new Bloodhound({
remote: {
url: '/sales_crm/leads/get_lead_associated_info?query=%QUERY&model_class='+$('.add_locality_data').attr("identifier"),
filter: function (response) {
var tagged_user = $('#tokenfield-typeahead').tokenfield('getTokens');
console.log(tagged_user)
return $.map(response.leads, function (user) {
console.log(user)
var exists = false;
// console.log("velava saranam");
for (i=0; i < tagged_user.length; i++) {
if (user.value == tagged_user[i].value) {
var exists = true;
}
}
if (!exists) {
return {
value: user.value,
label: user.label
};
}
});
}
},
datumTokenizer: function (d) {
return Bloodhound.tokenizers.whitespace(d.value);
},
queryTokenizer: Bloodhound.tokenizers.whitespace
});
engine.initialize();
2) Then Initialize tokenfield function
$('#tokenfield-typeahead').tokenfield({
delimiter: false,
typeahead: [
{
name: 'users',
displayKey: 'label',
source: engine.ttAdapter()
}
]
})
.on('tokenfield:createtoken', function (e) {
var existingTokens = $(this).tokenfield('getTokens');
if (existingTokens.length) {
$.each(existingTokens, function(index, token) {
console.log(token)
if (token.value === e.attrs.value) {
e.preventDefault();
}else{
console.log(e.attrs.value)
}
});
}else{
console.log(e.attrs.value)
}
});
It's OK ... I find the solution
$('#tokenfield1').tokenfield();
var mots_cles = "";
$.each(e.valeur_tableau_infos_tutoriel.Mots_cles, function (index,value){
mots_cles += value.mots_cles+',';
})
$('#tokenfield1').tokenfield('setTokens', mots_cles)
}

jQuery Mapster with dynamic data from php

We are building a website and for that we need to include an image map from a country and when you highlight a provence it needs to show some content below the map.
For this we are using jquery mapster (I'm not really a jquery programmer, so maybe you could help).
All works with the code below, but only when the content is on 1 line.
For example groningen: "<h1>Groningen</h1><p>test</test>", <-- This works
For example
groningen: "<h1>Groningen</h1>
<p>test</test>",
This does not work.
Below you will find my jquery code
<script type="text/javascript">
var $s = jQuery.noConflict();
$s(document).ready(function () {
var image = $s('img');
var data = {
groningen: "<h1>Groningen</h1>
<p>test</test>",
friesland: "<?php echo $extrafields[10];?>",
};
var defaultDipTooltip = 'I know you want the dip. But it\'s loaded with saturated fat, just skip it and enjoy as many delicious, crisp vegetables as you can eat.';
image.mapster(
{
fillOpacity: 1,
fillColor: "ff2d52",
strokeColor: "ff2d52",
strokeOpacity: 0.8,
strokeWidth: 1,
stroke: true,
isSelectable: true,
singleSelect: true,
mapKey: 'name',
listKey: 'name',
onClick: function (e) {
var newToolTip = defaultDipTooltip;
$s('#selections').html(data[e.key]);
if (e.key==='asparagus') {
newToolTip = "OK. I know I have come down on the dip before, but let's be real. Raw asparagus without any of that " +
"delicious ranch and onion dressing slathered all over it is not so good.";
}
image.mapster('set_options',{areas: [{
key: "dip",
toolTip: newToolTip
}]
});
},
showToolTip: true,
toolTipClose: ["tooltip-click", "area-click"],
areas: [
{
key: "groningen",
fillColor: "ff2d52",
toolTip: defaultDipTooltip
},
{
key: "friesland",
fillColor: "ff2d52"
}
]
});
});
</script>
Output
var data = {
groningen: "<h1>Groningen</h1><p>test</test>",
friesland: "<p>Scholen in de regio Groningen</p>
\n<ul>
\n<li>AOC Terra, Groene school<br />Adres<br />Winsum<br />Telefoonnummer<br />Naam directeur</li>
\n<li>De Bolster<br />Adres<br />Groningen<br />Telefoonnummer<br />Naam directeur</li>
\n<li>De Catamaran, School voor Praktijkonderwijs<br />Adres<br />Stadskanaal<br />telefoonnummer<br />Naam directeur</li>
\n<li>Dollard College locatie De Flint</li>
\n</ul>",
};
Javascript and by extension jQuery strings cannot go over a line boundry, you need to either add 2 strings together with a + or replace newlines with \n
Do some manipulation of your php array so each newline is replaced with \n
$UpdatedString = str_replace("\n", '\\n', $FieldValue);

jquery autocomplete serviceURL changing

My function for autocomplete is:
$(document).ready(function(){
var a = $('#issued_to').autocomplete(
{
serviceUrl: 'http://myhost.com/ecard_emp_suggestion/',
minChars: 1,
delimiter: /(,|;)\s*/, // regex or character
maxHeight: 400,
width: 300,
zIndex: 9999,
deferRequestBy: 0, //miliseconds
//params: { country:'Yes' }, //aditional parameters
noCache: false, //default is false, set to true to disable caching
// callback function:
onSelect: function(value, data){ alert('You selected: ' + value + ', ' + data); },
// local autosugest options:
//lookup: ['January', 'February', 'March', 'April', 'May'] //local lookup values
});
});
Now the problem is, it sends request to:
http://myhost.com/ecard_emp_suggestion?query=input_text
but i need http://myhost.com/ecard_emp_suggestion/input_text
what & where should I change??
In short, you shouldn't do it, mainly because of escaping issues. Most backends will not work with a random string in URL segments like http://myhost/com/card_emp_suggestion/space included.
You should look at the jquery ui project's autocomplete that allows a callback for source and you can implement your backend calling in whatever way you want.
You will have to override the function getSuggestions with a custom one, so after you initialize the autocomplete in the ready function add the following code:
a.getSuggestions = function(q) {
var cr, me;
cr = this.isLocal ? this.getSuggestionsLocal(q) : this.cachedResponse[q];
if (cr && $.isArray(cr.suggestions)) {
this.suggestions = cr.suggestions;
this.data = cr.data;
this.suggest();
} else if (!this.isBadQuery(q)) {
me = this;
//me.options.params.query = q;
//$.get(this.serviceUrl, me.options.params, function(txt) { me.processResponse(txt); }, 'text');
$.get(this.serviceUrl + '/' + q, null, function(txt) { me.processResponse(txt); }, 'text');
}
}

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