I am using the x-axis minRange to have my data points always start from the left on the x-axis. My data sets can have a maximum of 9 points. Whenever my sets only have a single data point or a few, these will end up centered in the graph, if I don't set minRange to a proper value. My x-axis is set to categories: [] to use my time values as strings and not date values. The problem is that when I have only eg two data points and minRange = 9, I will have seven axis labels numbered 2-9 with no data points. How can I remove these labels?
Fiddle
var json = [{"price":"15","time":"12:00"},{"price":"20","time":"12:30"}];
var processed_json = new Array();
$.map(json, function (obj, i) {
processed_json.push({name: obj.time,y: parseInt(obj.price) });
});
$('#container').highcharts({
xAxis: {
categories: [],
minRange: 9,
min: 0
},
yAxis: {
minRange: 30
},
series: [{
data: processed_json
}]
});
I would use tickPositions for this.
You can build the tickPositions array in the same loop that you are using to build your data by simply adding:
tickPositions.push(i);
Example:
http://jsfiddle.net/n4ym5xgr/4/
Another way to do it is to manually supply the list of categories to highcharts library. The idea is to have categories corresponding to your data-points named after obj.time and remaining categories being just empty strings.
var categoryCount = 10;
var json = [{"price":"15","time":"12:00"},{"price":"20","time":"12:30"}];
var processed_json = new Array();
var categories = new Array(categoryCount);
categories.fill("", 0, categoryCount); //Fill list of categories with empty strings
$.map(json, function (obj, i) {
processed_json.push({name: obj.time,y: parseInt(obj.price) });
categories[i] = obj.time; //Set the time for particular category
});
$('#container').highcharts({
xAxis: {
categories: categories,
minRange: categoryCount - 1,
min: 0
},
yAxis: {
minRange: 30
},
plotOptions: {
},
series: [{
data: processed_json
}]
});
Variable categories should be something like ["12:00", "12:30", "", "", "", "", "", "", ""] in this particular case.
Related
I am trying to display a set of dynamic data in a spline type chart using highcharts.
My spline type line chart has 4 series of data that needs to update through a service call. Service returns an array of data such as [0.345, 0.465, 0, 0.453] and I want to update y value of each series with the respective value in the array.
But my chart does not draw the data as expected. Even if I receive different values for y, in the chart it always displays it as 0.
This is my source code. Greatly appreciate if someone could help me figure out the issue in this or a give solution to this problem.
function drawHighChart() {
hchart = Highcharts.chart('container', {
chart: {
type: 'spline',
animation: Highcharts.svg,
marginRight: 10,
},
time: {
useUTC: false
},
title: {
text: 'Audio Analytics'
},
xAxis: {
tickInterval: 1,
},
yAxis: {
title: {
text: 'Prediction'
},
min: 0,
max: 1,
tickInterval: 0.5,
plotLines: [{
value: 0,
width: 1,
color: '#808080'
}]
},
tooltip: {
headerFormat: '<b>{series.name}</b><br/>',
pointFormat: '{point.x:%Y-%m-%d %H:%M:%S}<br/>{point.y:.2f}'
},
legend: {
enabled: false
},
exporting: {
enabled: false
},
/* Initially I'm setting some hardcoded values for each series.*/
series: [{
name: 'Calm',
data: [0.43934, 0.52503, 0.57177, 0.69658, 0.97031, 0.119931, 0.137133]
}, {
name: 'Happy',
data: [0.24916, 0.24064, 0.29742, 0.0000, 0.32490, 0.0000, 0.38121]
}, {
name: 'Angry',
data: [0.11744, 0.17722, 0.16005, 0.19771, 0.20185, 0.24377, 0.32147]
}, {
name: 'Disgust',
data: [0.7988, 0.15112, null, 0.22452, 0.34400, null, 0.34227]
}],
});
}
Now when I call drawHighChart() at the windows onload this is what it outputs.
Now from here, I need to update each series dynamically as service returns a data array.
This is my function that updates the chart dynamically every time the service returns a response. Every time I call this fucntion, I pass a data array constructed from the response data.
initiVal = 7; //This is a gloabl variable that increases x-axis value from 7.
function updateHighChart(dataArray) {
var series = hchart.series[0];
var series1 = hchart.series[1];
var series2 = hchart.series[2];
var series3 = hchart.series[3];
var x = initiVal;
y = dataArray[0];
y1 = dataArray[1];
y2 = dataArray[2];
y3 = dataArray[3];
console.log("dataArray: " + dataArray);
series.addPoint([x, y], true, true);
series1.addPoint([x, y1], true, true);
series2.addPoint([x, y2], true, true);
series3.addPoint([x, y3], true, true);
initiVal++;
}
But even if data is dynamically assigned to y axis values in each series, they do not update as expected in the chart. This is how the charts looks after the 6th second/instance when data needs to dynamically update in the chart.
I would like to display on the y-axis of the data through the categories property. I pass an array as I saw in some examples
initLapChart() {
hcharts.chart(this.div.nativeElement, {
chart: {
...
},
yAxis: {
categories: ["0:20", "0:30", "0:40", "1:00", "1:15"],
reversed: true,
tickPixelInterval: 50,
gridLineWidth: 1,
...
},
...
}
but it only shows me the first two values, why?
If you want to show all of your categories, whether you have data for them or not, you just need to set your axis min and max values:
yAxis: {
min: 0,
max: 4,
reversed: true,
tickInterval: 1,
categories: ['0:20', '0:30', '0:40', '1:00', '1:15'],
labels: {
step: 1
}
},
Updated fiddle:
http://jsfiddle.net/jlbriggs/y3ut4jdv/1/
Or you can do it programmatically if you define your categories up front:
var categories = ['0:20', '0:30', '0:40', '1:00', '1:15'],
yMax = categories.length -1;
Fiddle:
http://jsfiddle.net/jlbriggs/y3ut4jdv/2/
The elements in categories array are indexed from 0 to categories.length - 1, so the first element from the array represents value 0 on yAxis, the second, value 1, etc. If you want to display them all, you need to set tickInterval and labels.step properties with value 1.
API Reference:
http://api.highcharts.com/highcharts/yAxis.tickInterval
http://api.highcharts.com/highcharts/yAxis.labels.step
Example:
http://jsfiddle.net/6qp0v887/
I'm trying to show a Chart with Highcharts, using javascript.
I've read the csv file using Highcharts modules/data.js and the Chart is showing without problems inside my container.
mychart = Highcharts.chart('container', {
chart: {
type: 'scatter',
zoomType: 'xy'
},
data: {
csv: csv,
startColumn:0,
endColumn:2
},
title: {
text: 'DATA'
},
xAxis: {
title: {
text: 'X'
},
},
yAxis: {
title: {
text: 'Y'
}
}
});
Basically the csv have 3 columns, with commas separating attributes and break lines for each row.
x, y, category
data1, data2, data3
data1, data2, data3
data1, data2, data3
data1, data2, data3
data1, data2, data3
...
The first and the seconds columns are the points coordinates and the third is the category. I want to display points based on one of the categories in the third row.
I don't know how to show all x & y points categorized by category column.
You can think of a category as a series in Highcharts. So you need to create an array like this
series: [{
name: 'Series ' + categoryNumber,
data: [] // array with x and y coordinates
}, {
name: ''
data: []
}]
Then you can parse your csv file, it would be easier without data module.
var rows = csv.split('\n');
var series = [];
rows.forEach(row => {
var cells = row.split(',').map(Number);
var serie = series[cells[2]];
if (!serie) {
serie = series[cells[2]] = {data: []};
}
serie.data.push([cells[0], cells[1]]);
})
Highcharts.chart('container', {
chart: {
type: 'scatter'
},
series: series
});
example: http://jsfiddle.net/w7ug4dbw/
There is important for the chart series that you will not have gaps in your category - so if you have categories 0 - 2, you need to have data for all 0,1,2 category - if you don't, then you can receive the errors while using the chart. To overcome that, you would need to loop through the series array and delete all the gaps.
I am using Highcharts and I would like this chart to display categories on axis z. This is what I have now: JSFiddle
zAxis: {
min: 1,
max: 3,
categories: ['Apples', 'Bananas', 'Oranges'],
minorTickInterval: 1,
title: 'source'
},
As you can see I have 3 categories. I would like them to be displayed in the same way as the numbers on the x and y axes. Any ideas?
Just get set categories for every axis in your config and get it from chart.zAxis[0].options.categories for z axis. Then you can get indexes which are in this.point.x this.point.y and this.point.z and return a formatted tooltip containing categories names.
Code:
tooltip: {
formatter: function() {
const chart = this.point.series.chart,
catsX = chart.xAxis[0].categories,
catsY = chart.yAxis[0].categories,
catsZ = chart.zAxis[0].options.categories;
return `X: ${catsX[this.point.x]}<br/>
Y: ${catsY[this.point.y]}<br/>
Z: ${catsZ[this.point.z]}`;
}
},
Live example:
https://jsfiddle.net/p86a7y0g/
Api reference:
http://api.highcharts.com/highcharts/tooltip.formatter
Output:
I am using highstocks and I am wondering if there is anyway I can plot the y values in a column series starting from an arbitrary number. For example. I have a column series called NU (New Users) with its first entry yAxis value of 1,000. Currently, that first entry is plotted on the yAxis from range [0, 1,000]. But instead I would like it to be plotted from [5,000, 6,000].
The reason I want this is because NU is essentially apart of another column called DAU (Daily Active Users), and I want it to be shown up as so. The first entry of the DAU column series has a Y value of 6,000, and 6,000 - 1,000 is 5,000; therefore I would like this entry of NU to start at 5,000.
Here is what I have so far
http://jsfiddle.net/6JACr/2/
I was going to plot DAU as (Original DAU - NU), and stack NU on top of DAU, but that would mean the series holds an incorrect value for DAU.
Here is my code
$(document).ready(function() {
var all_series = [];
var accu_series;
var accu_data = [];
var pccu_series = [];
var pccu_data = [];
var dau_series;
var dau_data = [];
var nu_series;
var nu_data = [];
function draw_charts() {
$('#container').highcharts('StockChart', {
rangeSelector : {
selected : 1,
buttons: [{
type: 'week',
count: 1,
text: '1w'
}, {
type: 'month',
count: 1,
text: '1m'
}, {
type: 'month',
count: 3,
text: '3m'
}, {
type: 'month',
count: 6,
text: '6m'
}, {
type: 'ytd',
text: 'YTD'
}, {
type: 'year',
count: 1,
text: '1y'
}, {
type: 'all',
text: 'All'
}]
},
plotOptions: {
column: {
grouping: false
}
},
yAxis: [{
// Primary Y-Axis
labels:{
align:'right',
x:-10
},
lineWidth : 1,
offset : 0
}, {
// Secondary Y-Axis
opposite: true
}],
series : all_series
});
}
//Function that takes a record and fills the series data with that record
function fill_data(index, record) {
var date = new Date(record['dailyDate']);
var utc_date = Date.UTC(date.getUTCFullYear(), date.getUTCMonth(), date.getUTCDate());
accu_data[index] = [utc_date, parseFloat(record['accu'])];
dau_data[index] = [utc_date, parseFloat(record['dau'])];
nu_data[index] = [utc_date, parseFloat(record['users'])];
}
// //Function that sets up the series data for plotting
function fill_series() {
dau_series = {
name: "DAU",
type: "column",
data: dau_data,
stack: 0
};
all_series[0] = dau_series;
nu_series = {
name: "NU",
type: "column",
data: nu_data,
stack: 0
};
all_series[1] = nu_series;
}
//Pull data from API, format it, and store into the series arrays
(function() {
var result = '[{"accounts":"1668","accu":"568","activePayingRate":"1.97757","activePayingUsers":"854","activeUsers":"4905","area":"1","arpu":"34.6908","company":"45","dailyDate":"2013-08-06","dau":"6000","lost":"87","newUser":"0","paying":"96","payingRate":"1.53724","pccu":"747.0","registration":"572","sales":"3305.01","server":"1","users":"1000"},{"accounts":"1554","accu":"497","activePayingRate":"2.18398","activePayingUsers":"833","activeUsers":"4533","area":"1","arpu":"34.7479","company":"45","dailyDate":"2013-08-07","dau":"5873","lost":"89","newUser":"0","paying":"96","payingRate":"1.68568","pccu":"759.0","registration":"483","sales":"3300.04","server":"1","users":"1209"}]';
var json_result = JSON.parse(result);
$.each(json_result, function(index, record) {
fill_data(index,record);
});
fill_series();
draw_charts();
})();
});
You can use low property for column, for example: http://jsfiddle.net/6JACr/4/
To display proper tooltip, add extra property like val and use pointFormat to display it.
Note: when dataGrouping will be used custom properties are removed, in that case I advice to create your own tooltip formatter, to display what you need.