I am using more than one pie chart from amCharts on a single page, when the page is loading the animation is not working, and I want it to work. Below is my code which is used to render chart.
var Piechart132 = AmCharts.makeChart('div132', {
labelsEnabled: false,
autoMargins: false,
marginTop: 0,
marginBottom: 0,
marginLeft: 0,
marginRight: 0,
pullOutRadius: 0,
type: 'pie',
theme: 'dark',
dataProvider: [
{ country: 'Banking', litres: 300000000 },
{ country: 'Carpenter', litres: 349500000000 },
{ country: 'Doctor', litres: 433650000000 },
{ country: 'Gas', litres: 108326000000 },
{ country: 'Mechanic', litres: 366450000000 }
],
outlineThickness: 1,
outlineAlpha: 1,
legend: { enabled: true, valueText : '' },
outlineColor: undefined,
titles: [{ text: 'Industry wise Exposure' }],
valueField: 'litres',
titleField: 'country',
balloon: { fixedPosition: true }
});
One more than I want to mention that same code when I execute on Fiddle, it is working fine, it might be possible that there is any other conflict but I can't find it anyway. I've even tried to insert startDuration and set its value to20` so that at least I can see what the problem is but still nothing.
The pie charts definitely do animate when multiple charts are on the same page, however they might all bog down the browser if they're all initialized at once, leading to a choppy experience where the animation runs too quickly or are so choppy that they appear to not work. You may want to consider a lazy-loading technique in which you use each chart's init event to initialize the next chart after a delay, or the lazy load techniques described in the AmCharts knowledge base links below:
https://www.amcharts.com/kbase/lazy-loading-120-charts-page/
https://www.amcharts.com/kbase/make-the-charts-lazy-initialize-only-when-they-scroll-into-view/
Related
I'm trying to recreate the ECharts "Multi Title Gauge" example (a gauge with three pointers in different colors) but using a dataset rather than the gauge data values in the series.data definition. While I can get this to work for a gauge with a single pointer, I cannot get it working for the "Multi Title Gauge".
I've been able to get this to work with line, bar and pie charts.
I did read that the datasets feature, while introduced in 5.0, is not supported by all chart types.
I was encouraged when I was able to get "Gauge Basic Chart" working with a dataset. But have not been able to get "Multi Title Gauge" to work with a dataset.
The closest I have gotten to having "Multi Title Gauge" use a dataset is by using multiple series' and datasets. Each dataset has only 1 value.
ChartOptions={
dataset: [
{ source: [ ["Series1"], [46] ] },
{ source: [ ["Series2"], [56] ] }
],
series: [
{
name: "Series1",
type: "gauge",
datasetIndex: 0,
progress: { show: true },
title: { offsetCenter: ["-60%", "82%"] },
detail: {
formatter: "R1",
offsetCenter: ["-60%", "97%"]
},
min: 0,
max: 180,
splitNumber: 9,
axisTick: { splitNumber: 4 }
},
{
name: "Series2",
type: "gauge",
datasetIndex: 1,
progress: { show: true },
title: { offsetCenter: ["0%", "82%"] },
detail: {
formatter: "R2",
offsetCenter: ["0%", "97%"]
},
min: 0,
max: 180,
splitNumber: 9,
axisTick: { splitNumber: 4 }
}
]
}
However, both pointers are blue - there is no automatic color change for the different series' and issues with the legend. There is quite a bit of repetition in the data configuration. Using a dataset would (as designed) separate the config from the data.
I have also tried a single dataset with multiple values and then using 'encode' in the series, but 'encode' seems to be ignored for Gauge.
My preference is to standardize on using a dataset for all my charts. But if it's not fully supported for Gauge, then I'll take a different approach.
Any insight would be appreciated.
I have a form with two chained comboboxes. The first chained combobox dictates the values that appear in the second. I have forceSelection:true on the second combobox so that when a user changes the first combo, the second will be set blank because it no longer will be a valid option. The chained combos function as expected but when I load a record into this form using getForm().loadRecord(record) the value for the first combo is set properly but the second is not unless I set forceSelection:false.
The following fiddle should make things pretty clear: sencha fiddle
Clicking "Load Record" should load in Fruits/Apple, but only Fruits is shown. Clicking "Load Record" a second time achieves the desired result. If you comment out forceSelection: true it works as expected but then the chained combos don't function as desired. Is there anything I'm doing wrong here?
It is not so easy. What is happening when you are running form.loadRecord(rec).
you set the FoodGroup combobox
you set the FoodName combobox. BUT the value is not there, because your filter did not switch to appropriate food groups. That is why commenting force selection helps. (That is why commenting filter also help).
turned on the filter of food names. Store now have new values.
You are clicking the button second time. The first combobox value is the same, filters are not trigged (triggered?), you already have appropriate values in the second store and the value is selected.
How to fix:
The fix is ugly. You can listen on store 'refresh' (it means the filters are triggered) and then set the second value (or set the values again).
Ext.define('Fiddle.view.FormModel', {
extend: 'Ext.app.ViewModel',
alias: 'viewmodel.fiddle-form-model',
stores: {
foodgroups: {
fields: ['name'],
data: [{
foodgroupname: 'Fruits'
}, {
foodgroupname: 'Vegetables'
}]
},
foods: {
fields: ['foodgroupname', 'foodname'],
filters: {
property: 'foodgroupname',
value: '{selectedFoodgroup.foodgroupname}'
},
data: [{
foodname: 'Apple',
foodgroupname: 'Fruits'
}, {
foodname: 'Banana',
foodgroupname: 'Fruits'
}, {
foodname: 'Lettuce',
foodgroupname: 'Vegetables'
}, {
foodname: 'Carrot',
foodgroupname: 'Vegetables'
}]
}
}
});
Ext.define('Fiddle.view.Form', {
extend: 'Ext.form.Panel',
xtype: 'fiddle-form',
viewModel: {
type: 'fiddle-form-model'
},
title: 'Combos',
items: [{
xtype: 'combo',
itemId: 'FoodGroup', // To access FoodGroup
displayField: 'foodgroupname',
bind: {
store: '{foodgroups}',
selection: '{selectedFoodgroup}'
},
valueField: 'foodgroupname',
forceSelection: true,
name: 'foodgroup',
fieldLabel: 'Food Group',
value: 'Vegetables'
}, {
xtype: 'combo',
itemId: 'FoodName', // To access FoodName
bind: {
store: '{foods}'
},
queryMode: 'local',
forceSelection: true, //COMMENTING THIS OUT ACHIEVES DESIRED LOAD RECORD BEHAVIOR
displayField: 'foodname',
valueField: 'foodname',
name: 'food',
fieldLabel: 'Food',
value: 'Carrot'
}],
buttons: [{
text: 'Load Record',
handler: function (btn) {
// OUR UGLY FIX
var form = btn.up('form'),
foodGroupComboBox = form.down('combobox#FoodGroup'),
foodNameComboBox = form.down('combobox#FoodName'),
record = Ext.create('Ext.data.Model', {
foodgroup: 'Fruits',
food: 'Apple'
});
foodNameComboBox.getStore().on('refresh', function (store) {
form.loadRecord(record);
}, this, {
single: true
})
form.loadRecord(record);
}
}]
});
Ext.application({
name: 'Fiddle',
launch: function () {
var form = new Fiddle.view.Form({
renderTo: document.body,
width: 600,
height: 400
});
}
});
I'm trying to make a a combination of a candlestick chart (representing stock data) and a bar chart (representing volume).
I already have them displayed on one chart but the display and layout I'm having trouble with.
For one, the candlestick and bar data are placed side-by-side rather than stacked on top of each other. Another error is the scale of the volume data for the bar chart is not represented properly in the y-axis (which uses data from candlesticks as basis).
Here is my current code to render the chart:
chart = new Chart(ctx, {
type: 'candlestick',
data: {
labels: labelsData,
datasets: [{
label: "My Data",
data: chartData
},
{
label: 'Volume',
data: volData,
type: 'bar'
}]
}
});
labelsData contains the Date values for each item entry
chartData contains JSON object with c,h,l,o,t (close,high,low,open,date) to
represent stock data for each item entry
volData is an array containing numbers to represent volume for each item entry
What should I add to make the candlesticks and bars placed on the same column, as well as have the bars have their own scale so they do not overshoot the height of the chart?
It seems you need to scale the volume data since it's two different value units in Y,
It seems like currentlty there isn't support for this in chartJs I created a feature request, follow the link to see the two issues that were closed due to this.
https://github.com/apexcharts/apexcharts.js/issues/2068
With default configuration you're not easily able to add barcharts.
Here is steps you need to do;
Base config:
const config = {
// type: 'candlestick', // you must remove this, this option is braking the chart
data: {
datasets: []
},
options: {
parsing: false, // must be here, solves another stupid problem
spanGaps: true, // for better performance
animation: false, // for better performance
pointRadius: 0, // for better performance
plugins: {
title: {
display: false,
text: 'Fiyat Grafiği'
},
},
responsive: true,
maintainAspectRatio: false,
scales: {
x: {
type: 'timeseries',
},
y: {
type: 'linear',
},
volume: {
type: 'linear',
beginAtZero: true,
position: 'right',
max: maxVolume * 10, // maxVolume should be the maximum number of volumes
grid: {
display: false, // for better presentation
},
ticks: {
display: false, // for better presentation
},
}
},
interaction: {
intersect: false,
mode: 'index',
},
}
};
Second step is preparing the datasets;
let dataSets = [
{
type: 'candlestick', // this must stay
label: 'Financial Graph',
data: data['klines'].map(function (kline) {
return {
'x': moment(kline['from']),
'o': kline['open_price'],
'c': kline['close_price'],
'h': kline['high_price'],
'l': kline['low_price']
};
}),
color: {
up: 'rgb(26, 152, 129)', // those colors are better than defaults
down: 'rgb(239, 57, 74)', // those colors are better than defaults
unchanged: '#999', // those colors are better than defaults
},
borderColor: {
up: 'rgb(26, 152, 129)',
down: 'rgb(239, 57, 74)',
unchanged: '#999',
},
order: 10,
yAxisID: 'y', // this must stay
},
{
type: 'bar',
label: 'Volume',
data: data['klines'].map(function (kline) {
return {
'x': moment(kline['from']), // i used moment, feel free to use your own time library
'y': kline.quote_asset_volume,
}
}),
backgroundColor: data['klines'].map(function (kline) {
return kline.open_price < kline.close_price ? 'rgb(26, 152, 129)' : 'rgb(239, 57, 74)' // for better presentation
}),
borderColor: '#fff',
borderWidth: 1,
order: 12,
yAxisID: 'volume', // this must stay
barPercentage: 0.5, // this must stay
barThickness: 6, // this must stay
maxBarThickness: 8, // this must stay
},
]
Result;
How do I have insert text within the stacked sections of a highcharts stacked bar graph ( https://www.highcharts.com/demo/bar-stacked ).
My graph will really only have two columns, and they'll have the y-axis reversed and displayed as so: https://jsfiddle.net/ogjz9ra0/
Highcharts.chart('container', {
chart: {
type: 'bar'
},
title: {
text: 'Stacked bar chart'
},
xAxis: {
categories: ['Bananas']
},
colors: ['#1b98ee', '#1366a6'],
yAxis: {
min: 0,
title: {
text: 'Total fruit consumption'
},
},
legend: {
reversed: true,
},
plotOptions: {
series: {
stacking: 'normal'
}
},
series: [{
name: 'John',
data: [4726.78]
}, {
name: 'Brian',
data: [4250.00],
}]
});
What I'd like is to be able to inject text into each of the columns.
https://drive.google.com/file/d/1CDttfeB9mqI5r9voYalsLtEeH0OSs3Ey/view?usp=sharing
I'm still relatively new to HighCharts, so any help would be appreciated.
Thank you all so much again!
I did some googling, and most of the results talk about having the text render inside the bar for non-stacked bar charts. Note that the placing for the problem I'm trying to solve is in the center.
You can use datalabels documentation like this :
plotOptions: {
series: {
stacking: 'normal',
dataLabels: {
enabled: true,
formatter: function() {
// console.log(this) // uncomment this line to see all params available
return 'custom text here'
}
}
}
},
Fiddle
I have a combined BarLineChart. Is there a possibility to add a label near the line (in this case how much the sales increased from 2015 to 2016) ?
I hope there is some way
This is what i have so far
I want this
Thanks
The easiest way to do this is to use the chartjs-plugin-annotation plugin provided by the same team that provides chart.js.
You can use the plugin to draw arbitrary lines or boxes on your chart that can also contain a label. Unfortunately, the plugin does not yet support point annotations, so you have to use a little hack to enable the label to display but not the line or box.
Here is an example chart that uses the plugin to draw a horizontal white line at a specific Y value (white is used so that it blends in with the chart background and becomes invisible). The line is configured to also have a label. The end result is a text annotation on the chart with no visible line.
var ctx = document.getElementById("myChart");
var myChart = new Chart(ctx, {
type: 'bar',
data: {
labels: ['Jan 21st', 'Feb 21st'],
datasets: [{
type: 'line',
label: 'B',
data: [10, 25],
fill: false,
borderWidth: 3,
borderColor: chartColors.orange,
lineTension: 0,
}, {
type: 'bar',
label: 'A',
backgroundColor: chartColors.blue,
data: [10, 25],
}]
},
options: {
scales: {
yAxes: [{
ticks: {
beginAtZero: true
}
}],
xAxes: [{
ticks: {
min: 'Jan 21st',
max: 'Apr 21st',
}
}],
},
annotation: {
annotations: [{
type: 'line',
mode: 'horizontal',
scaleID: 'y-axis-0',
value: 18,
borderColor: 'white',
borderWidth: 0,
label: {
xAdjust: -50,
fontSize: 16,
fontColor: 'black',
backgroundColor: 'white',
content: "+20%",
enabled: true
}
}],
drawTime: 'beforeDatasetsDraw'
}
}
});
You can see it in action at this codepen.
One final note, if you include the plugin in your app and you also use charts that don't use scales (e.g. pie/doughnut) then you will get an error. This is a known issue and has been logged here.
The workaround is to add this to your pie/doughnut chart config (or it might be easier to add it to the pie/doughnut global default config).
scales:{
yAxes: [],
xAxes: []
},