Develop Reference

Layer in Leaflet JS doesnt show again when check the control layer

I use the leaflet control layer to show up and remove the layer when I didn't wanna show the layer. when I uncheck my control layer it worked properly. the layer can disappear, but when I check again the control layer, the layer didn't show again. but there is no error in the console .
var pieChartGroup = L.featureGroup().addTo(map);
vals.forEach(val => {
var pictures = L.marker(val.location, {
icon: L.divIcon({
className: 'leaflet-echart-icon',
iconSize: [160, 160],
html: '<div id="marker' + val.id + '" style="width: 160px; height: 160px; position: relative; background-color: transparent;"></div>'
})
}).addTo(pieChartGroup);
// Based on the prepared dom, initialize the echarts instance
var myChart = echarts.init(document.getElementById('marker' + val.id));
// Specify chart configuration items and data
option = {
tooltip: {
trigger: 'item',
formatter: "{a} <br/>{b}: {c} ({d}%)"
},
series: [{
name: val.nama,
type: 'pie',
radius: ['10', '25'],
avoidLabelOverlap: false,
label: {
normal: {
show: false,
position: 'center'
},
emphasis: {
show: true,
textStyle: {
fontSize: '18',
fontWeight: 'bold'
}
}
},
labelLine: {
normal: {
show: false
}
},
data: [{
value: val.MB,
name: 'Masih Bersekolah'
}, {
value: val.TBL,
name: 'Tidak Bersekolah Lagi'
}, {
value: val.TBPS,
name: 'Tidak/Belum Pernah Bersekolah'
}]
}]
};
// Use the configuration items and data you just specified to display the chart.
myChart.setOption(option);
}
)
var baseLayers = {
"OpenStreetMap": LayerKita,
"OpenCycleMap": L.tileLayer('http://{s}.tile.opencyclemap.org/cycle/{z}/{x}/{y}.png'),
"Outdoors": L.tileLayer('http://{s}.tile.thunderforest.com/outdoors/{z}/{x}/{y}.png')
};
var overlays = {
"Bersekolah" : pieChartGroup
};
L.control.layers(baseLayers, overlays).addTo(map);

Change highcharts data label position

This is my jsfiddle link http://jsfiddle.net/bb1m6xyk/1/
I want that all my labels like my data: 0 etc are positioned at the base and in center of each zone.
$('#container').highcharts({
chart: {
type: 'area'
},
yAxis: {
title: {
text: 'Percent'
}
},
plotOptions: {
area: {
enableMouseTracking: false,
showInLegend: false,
stacking: 'percent',
lineWidth: 0,
marker: {
enabled: false
},
dataLabels: {
className:'highlight',
enabled: true,
formatter: function () {
console.log(this);
return this.point.myData
}
}
}
},
series: [{
name: 'over',
color: 'none',
data: overData
}, {
id: 's1',
name: 'Series 1',
data: data,
showInLegend: true,
zoneAxis: 'x',
zones: zones
}]
});
Is this possible? I tried it using className on dataLabels but it doesn't take that into effect.
Any help is appreciated.

There are a few ways to render labels on a chart.
The Renderer
Live example: http://jsfiddle.net/11rj6k6p/
You can use Renderer.label to render the label on the chart - this is a low level approach but it gives you full control how the labels will be rendered. You can loop the zones and set x and y attributes of the labels, e.g. like this:
const labels = ['l1', 'l2', 'l3', 'l4', 'l5']
function drawLabels() {
const zonesLabels = this.zonesLabels
const series = this.get('s1')
const { yAxis, xAxis } = series
const y = yAxis.toPixels(0) - 20 // -20 is an additional offset in px
series.zones.reduce((prev, curr, i) => {
if (curr.value !== undefined) {
const x = (xAxis.toPixels(prev.value) + xAxis.toPixels(curr.value)) / 2
if (!zonesLabels[i]) {
zonesLabels.push(
this.renderer.label(labels[i], x, y).add().attr({
align: 'center',
zIndex: 10
})
)
} else {
zonesLabels[i].attr({ x, y })
}
}
return curr
}, { value: series.dataMin })
}
Then set the function on load - to render the labels, and on redraw - to reposition the labels if the chart size changed.
chart: {
type: 'area',
events: {
load: function() {
this.zonesLabels = []
drawLabels.call(this)
},
redraw: drawLabels
}
},
The annotations module
Live example: http://jsfiddle.net/a5gb7aqz/
If you do not want to use the Renderer API, you can use the annotations module which allows to declare labels in a chart config.
Add the module
<script src="https://code.highcharts.com/modules/annotations.js"></script>
Map zones to the labels config object
const labels = ['l1', 'l2', 'l3', 'l4', 'l5']
function annotationsLabels() {
const zonesLabels = []
zones.reduce((prev, curr, i) => {
zonesLabels.push({
text: labels[i],
point: {
x: (prev.value + curr.value) / 2,
y: 0,
xAxis: 0,
yAxis: 0
}
})
return curr
}, { value: 0 })
return zonesLabels
}
Set the annotations options
annotations: [{
labels: annotationsLabels(),
labelOptions: {
shape: 'rect',
backgroundColor: 'none',
borderColor: 'none',
x: 0,
y: 0
}
}],
Data labels and a new series
Live example: http://jsfiddle.net/wpk1495g/
You can create a new scatter series which will not respond to mouse events and it won't be visible in the legend. The labels can be displayed as data labels.
Map zones to series points
const labels = ['l1', 'l2', 'l3', 'l4', 'l5']
function seriesData() {
const points = []
zones.reduce((prev, curr, i) => {
points.push( {
x: (prev.value + curr.value) / 2,
y: 50,
dataLabels: {
enabled: true,
format: labels[i]
}
})
return curr
}, { value: 0 })
return points
}
Set the series options in the chart config
, {
type: 'scatter',
enableMouseTracking: false,
showInLegend: false,
data: seriesData(),
zIndex: 10,
color: 'none',
dataLabels: { style: { textOutline: false }, x: 0, y: 0 }
}
Output

HighCharts inside of a javascript function

I'm trying to draw a 3d box after a user has selected some data from the server.
When I put the highcharts inside of a js function, it throws some errors.
My code is:
Chart It<br/>
<div id="container" style="height: 400px"></div>
<script>
var chart;
function chart3d() {
// Give the points a 3D feel by adding a radial gradient
Highcharts.getOptions().colors = $.map(Highcharts.getOptions().colors, function (color) {
return {
radialGradient: {
cx: 0.4,
cy: 0.3,
r: 0.5
},
stops: [
[0, color],
[1, Highcharts.Color(color).brighten(-0.2).get('rgb')]
]
};
});
// Set up the chart
chart = new Highcharts.Chart({
chart: {
renderTo: 'container',
margin: 100,
type: 'scatter',
options3d: {
enabled: true,
alpha: 10,
beta: 30,
depth: 250,
viewDistance: 5,
fitToPlot: false,
frame: {
bottom: {
size: 1,
color: 'rgba(0,0,0,0.02)'
},
back: {
size: 1,
color: 'rgba(0,0,0,0.04)'
},
side: {
size: 1,
color: 'rgba(0,0,0,0.06)'
}
}
}
},
title: {
text: 'Draggable box'
},
subtitle: {
text: 'Click and drag the plot area to rotate in space'
},
plotOptions: {
scatter: {
width: 10,
height: 10,
depth: 10
}
},
yAxis: {
min: 0,
max: 10,
title: null
},
xAxis: {
min: 0,
max: 10,
gridLineWidth: 1
},
zAxis: {
min: 0,
max: 10,
showFirstLabel: false
},
legend: {
enabled: false
},
series: [{
planeProjection: {
enabled: false,
},
lineProjection: {
enabled: 'hover',
colorByPoint: true
},
name: 'Reading',
colorByPoint: true,
data: darray
}]
});
// Add mouse events for rotation
$(chart.container).on('mousedown.hc touchstart.hc', function (eStart) {
eStart = chart.pointer.normalize(eStart);
var posX = eStart.pageX,
posY = eStart.pageY,
alpha = chart.options.chart.options3d.alpha,
beta = chart.options.chart.options3d.beta,
newAlpha,
newBeta,
sensitivity = 5; // lower is more sensitive
$(document).on({
'mousemove.hc touchdrag.hc': function (e) {
// Run beta
newBeta = beta + (posX - e.pageX) / sensitivity;
chart.options.chart.options3d.beta = newBeta;
// Run alpha
newAlpha = alpha + (e.pageY - posY) / sensitivity;
chart.options.chart.options3d.alpha = newAlpha;
chart.redraw(false);
},
'mouseup touchend': function () {
$(document).off('.hc');
}
});
});
}
</script>
This loads fine if I do not put it inside of the chart3d function. Is there a way to get this working. The error message I get is:
highcharts.js:10 Uncaught Error: Highcharts error #13: www.highcharts.com/errors/13
at Object.a.error (highcharts.js:10)
at a.Chart.getContainer (highcharts.js:256)
at a.Chart.firstRender (highcharts.js:271)
at a.Chart.init (highcharts.js:247)
at a.Chart.getArgs (highcharts.js:246)
at new a.Chart (highcharts.js:246)
at chart3d (graphingCustom.js:26)
at HTMLAnchorElement.onclick (VM599 :643)

As they say:
Highcharts Error #13
Rendering div not found
This error occurs if the chart.renderTo option is misconfigured so that
Highcharts is unable to find the HTML element to render the chart in.
You don't have a div with the id=container at the time you are calling the method.

Pie Chart not created when one record in data uses Flot chart

If only one record in data then pie chart not display. I'm using Flot chart.
<script type='text/javascript'>
$(function () {
var data = [{
label: "Series1",
data: 1
}, ];
$.plot($("#graph11"), data, {
series: {
pie: {
show: true,
radius: 1,
tilt: 0.5,
label: {
show: true,
radius: 1,
formatter: function (label, series) {
return '<div style="font-size:8pt;text-align:center;padding:2px;color:white;">' + label + '<br/>' + Math.round(series.percent) + '%</div>';
},
background: {
opacity: 0.8
}
},
combine: {
color: '#999',
threshold: 0.1
}
}
},
legend: {
show: false
}
});
});
</script>
When only one record in data then pie chart not display.

Code looks fine.
Except
If you are running this in older versions of IE (<=7):
var data = [{
label: "Series1",
data: 1
}, ]; // <--remove the trailing comma
It'll die on the trailing comma.

Why does this Highcharts graph only show tooltip for the first and last nodes?

I'm just starting out with Highcharts and I'm having a little trouble showing a tooltip for each data item in my graph. At the moment, it just shows a tooltip for the first and last item.
var chart1; // globally available
$(document).ready(function () {
var options = {
chart: {
renderTo: 'AssessmentChart',
marginRight: 100,
marginBottom: 40
},
title: {
text: 'Assessment history',
x: -20 //center
},
subtitle: {
text: 'Assessment history for this patient',
x: -20 //center
},
xAxis: {
type: 'datetime'
},
yAxis: {
title: {
text: 'Score'
},
max: 72,
min: 0
},
tooltip: {
formatter: function() {
return '<b>'+ this.y +'</b>';
}
},
legend: {
layout: 'vertical',
align: 'right',
verticalAlign: 'top',
x: -10,
y: 100,
borderWidth: 0
},
series: []
};
// Get the main assessment data...
var dlqiData = [], hdnDlqiData = $("#hdnDlqiData");
if (hdnDlqiData.length > 0) {
var dlqiDataJson = $.parseJSON(hdnDlqiData.val());
$.each(dlqiDataJson, function (i, item) {
dlqiData.push(
{
x: stringToUtcDate(item.dateCreated),
y: item.calculatedScore
}
);
});
options.series.push({
type: 'spline',
name: 'DLQI',
data: dlqiData
});
}
chart1 = new Highcharts.Chart(options);
function stringToUtcDate(datestring) {
var date = datestring.split('/');
return Date.UTC(parseInt(date[2], 10), parseInt(date[1], 10) - 1, parseInt(date[0], 10));
}
});​
I'm pulling data in from a hidden form field, so here's a Fiddle showing this in action: http://jsfiddle.net/gfyans/LjRGk/3/
Here's one of the official Fiddle's, http://jsfiddle.net/gh/get/jquery/1.7.2/highslide-software/highcharts.com/tree/master/samples/highcharts/demo/line-basic/, and they manage it OK, but I can't see from that what I'm dong wrong/differently.
I know it'll be something insanely easy, but I can't see it. Can anyone point me in the right direction?
Thanks,
Greg.

You need to have your data in ascending date order if using a datetime x-axis.