So I currently have a floating horizontal bar chart but i'd like to make a few updates to it and not sure based on documentation how.
I'd like to make the x-axes "sticky" so that when the chart loads, the user sees some data along with the x-axis labels (they can see the numbers associated to the chart) this is because the div that wraps it will be scrollable in the Y direction along side a lot of information so they won't be able to see the x-axis labels when it loads without scrolling to the bottom.
Additionally, is there a way to make it that when the user scrolls, the x-axis labels will adjust to fit all the data being presented within it?
new Vue({
el: "#app",
data: {
chart: null,
},
computed: {
options() {
return {
indexAxis: 'y',
responsive: true,
elements: {
bar: {
borderWidth: 0,
},
},
legend: {
display: false,
},
plugins: {
legend: {
display: false,
},
title: {
display: false,
},
},
scales: {
xAxes: {
min: 100,
max: 10000,
},
yAxes: {
grid: {
display: false,
},
},
},
};
},
},
mounted() {
const data = {
labels: ["a", "b", "c", "c", "c", "c", "c", "c", "c", "c", "c", "c"],
datasets: [
{
axis: 'y',
label: 'Min and Max',
data: [[100,300], [400,3000], [3000,5000],[3000,5000],[3000,5000],[3000,5000],[3000,5000],[3000,5000],[3000,5000],[3000,5000],[3000,7000],[8000,10000] ],
borderRadius: 80,
borderSkipped: false,
barThickness: 10,
backgroundColor: ['rgb(130, 188, 0)', 'rgb(146, 146, 146)'],
barPercentage: 0.3,
minBarLength: 20,
},
],};
const ctx = document.getElementById('myChart').getContext('2d');
this.chart = new Chart(ctx, {
type: "bar",
data,
options: this.options,
});
this.chart.update();
},
})
floating horizontal bar chart jsfiddle
Related
I'm trying to make an area chart using apexcharts with nuxt (vue2), but the area is not getting filled, and the options i set in chartOptions for fill are getting used by the line itself instead of the area, as below:
this is my apexchart component:
<client-only>
<apexcharts
type="area"
width="70%"
ref="realtimeChart"
:options="chartOptions"
:series="series">
</apexcharts>
</client-only>
this is my chartOptions:
chartOptions: {
chart: {
toolbar: {
show: true,
tools: {
download: true,
selection: false,
zoom: true,
zoomin: false,
zoomout: false,
pan: false,
reset: false,
},
},
id: "basic-bar",
colors: ["#FFA07A"],
fill: {
type: "gradient",
gradient: {
shadeIntensity: 1,
opacityFrom: 0.7,
opacityTo: 0.9,
stops: [0, 100],
},
},
forecastDataPoints: {
count: 28,
strokeWidth: 4,
dashArray: 5,
},
title: {
text: "doesnt matter",
align: "center",
},
grid: {
borderColor: "#e7e7e7",
row: {
colors: ["#f3f3f3", "transparent"],
opacity: 0.5,
},
},
xaxis: {
type: "date",
tickAmount: 40,
},
yaxis: [
{
title: {
text: "Mt CO2eq/we",
},
forceNiceScale: true,
},
]
},
Can anyone help ?
I was declaring type: "line" in my series. thats all.
I've been trying to figure this out for a day or two. I'm pretty sure I've typed the exact code from the tutorial I've been watching, but my x axis labels are numbers going from 0 to 1200 in increments of 100. They should be a list of dates provided by the hc.options.xAxis.catagories variable near the bottom of the code. It was my understanding creating this line would create the attribute 'catagories' and fill the x axis labels. I've tried hacking about in the javascript to work around, but to no avail. Can anyone see the issue?
import justpy as jp
import pandas as pd
from datetime import datetime
from pytz import utc
data=pd.read_csv('reviews.csv',parse_dates=['Timestamp'])
data['Day']=data['Timestamp'].dt.date
day_average=data.groupby(['Day']).mean()
chart_def="""
{
chart: {
type: 'spline',
inverted: false
},
title: {
text: 'Atmosphere Temperature by Altitude'
},
subtitle: {
text: 'According to the Standard Atmosphere Model'
},
xAxis: {
reversed: false,
title: {
enabled: true,
text: 'Altitude'
},
labels: {
format: '{value} km'
},
accessibility: {
rangeDescription: 'Range: 0 to 80 km.'
},
maxPadding: 0.05,
showLastLabel: true
},
yAxis: {
title: {
text: 'Temperature'
},
labels: {
format: '{value}°'
},
accessibility: {
rangeDescription: 'Range: -90°C to 20°C.'
},
lineWidth: 2
},
legend: {
enabled: false
},
tooltip: {
headerFormat: '<b>{series.name}</b><br/>',
pointFormat: '{point.x} km: {point.y}°C'
},
plotOptions: {
spline: {
marker: {
enable: false
}
}
},
series: [{
name: 'Temperature',
data: [[0, 15], [10, -50], [20, -56.5], [30, -46.5], [40, -22.1],
[50, -2.5], [60, -27.7], [70, -55.7], [80, -76.5]]
}]
}
"""
def app():
wp=jp.QuasarPage()
h1=jp.QDiv(a=wp, text='Analysis of Course Reviews',classes='text-h3 text-center q-pa-md')
p1=jp.QDiv(a=wp,text="These graphs represent course reviews analysis")
hc=jp.HighCharts(a=wp, options=chart_def)
hc.options.title.text='Average rating by Day'
hc.options.xAxis.catagories = day_average.index
hc.options.series[0].data=list(day_average['Rating'])
return wp
jp.justpy(app)
I am facing problem in inserting a newline character in xAxes labels with chart Js.
Below is the sample code used for formatting xAxes labels
"scales": {
"xAxes": [{
"type" : 'time',
"display": true,
time: {
unit: 'millisecond',
stepSize: 5,
displayFormats: {
millisecond: 'HH:mm - YYYY/MM/DD'
}
}
}]
}
With the above code, the xAxes labels looks like 13:10 - 2022/02/01.
But, I want to be like below:
For multiline labels you will need to proide an array for the label in which each entry is its own line. This can be achieved with the tick callback:
function newDate(milis) {
return moment().add(milis, 'ms');
}
var config = {
type: 'line',
data: {
labels: [newDate(-4), newDate(-3), newDate(2), newDate(3), newDate(4), newDate(5), newDate(6)],
datasets: [{
label: "My First dataset",
data: [1, 3, 4, 2, 1, 4, 2],
}]
},
options: {
scales: {
xAxes: [{
ticks: {
callback: (tick) => (tick.split('-'))
},
type: 'time',
time: {
unit: 'millisecond',
stepSize: 5,
displayFormats: {
millisecond: 'HH:mm - YYYY/MM/DD'
}
}
}],
},
}
};
var ctx = document.getElementById("myChart").getContext("2d");
new Chart(ctx, config);
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.13.0/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.4/Chart.bundle.min.js"></script>
<canvas id="myChart"></canvas>
I am creating simple bar chart using Chartjs in Vue
<bar-chart
:data="[40, 19, 3, 5,]"
:labels="['0-30 days', '31-60 days', '61-90 days', '90+']"
:colors="['blue', 'blue', 'blue', 'blue']"
></bar-chart>
and the code for this is
createChart(chartData: object) {
const canvas = document.getElementById('bar') as HTMLCanvasElement;
const myopt = {
deferred: {
xOffset: '50%',
delay: 250,
},
plugins: {
datalabels: {
align: 'top',
anchor: 'end',
color: 'blue',
},
},
legend: {
display: true,
},
title: {
display: true,
text: 'Chart.js - Different Bar Colors',
},
tooltips: { enabled: true },
responsive: true,
hover: { mode: null },
elements: {
point: {
radius: 0,
},
},
scales: {
xAxes: [{
scaleLabel: {
display: true,
labelString: '',
},
offset: false,
color: 'rgba(0, 0, 0, 0)',
gridLines: {
drawOnChartArea: false,
},
}],
yAxes: [{
id: 'y-axis-0',
mirror: false,
stacked: true,
offset: false,
callback(label:any, index:any, labels:[]) {
return `${label}%`;
},
ticks: {
beginAtZero: true,
min: 0,
},
gridLines: {
display: true,
color: 'rgba(0, 0, 0, 0)',
drawOnChartArea: false,
},
}],
},
};
const options = {
type: 'bar',
data: chartData,
options: myopt,
};
new Chart(canvas, options);
}
the chart which this is generating is not equidistant sharing image for reference
position and width of the bar is incorrect and also I want to know if there is any way by which i can customize labels for y axis e.g. instead of 40,35,30... it will be ** 40k,35k,30k** in y axis
If any one has worked on this case please help
You can make use of the tick callback for your K at the end (https://www.chartjs.org/docs/latest/axes/labelling.html#creating-custom-tick-formats)
var ctx2 = document.getElementById("stack-chart");
var stackChart1 = new Chart(ctx2, {
type: 'bar',
options: {
scales: {
yAxes: [{
ticks: {
beginAtZero: true,
callback: (val) => (val + 'k')
}
}]
},
legend: {
display: false,
labels: {
fontSize: 20,
fontColor: '#595d6e',
}
},
tooltips: {
enabled: false
}
},
data: {
labels: ['1', '2', '3', '4', '5'],
datasets: [{
backgroundColor: "#5e63b4",
data: [20, 30, 40, 50, 60]
}]
},
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.4/Chart.min.js"></script>
<canvas id="stack-chart" width="1360" height="450"></canvas>
I want to develop an echart that has the area between 2 linecharts highlighted in a color. To achieve this, I made use of stacked area chart. I set the color of the upper area as the highlight color and color of lower area as white so as to achieve my result. However, the color of bigger area is merging with the lower area and producing a diff color. How can I set the colors of 2 areas to not interfere? Is there a way to give z-index to the areas for this?
Here is my code:
option = {
title: {
text: '堆叠区域图'
},
tooltip : {
trigger: 'axis',
axisPointer: {
type: 'cross',
}
},
legend: {
data:['邮件营销','联盟广告','视频广告','直接访问','搜索引擎']
},
toolbox: {
feature: {
saveAsImage: {}
}
},
grid: {
left: '3%',
right: '4%',
bottom: '3%',
containLabel: true
},
xAxis : [
{
type : 'category',
boundaryGap : false,
data : ['周一','周二','周三','周四','周五','周六','周日']
}
],
yAxis : [
{
type : 'value'
}
],
series : [
{
name:'联盟广告',
type:'line',
smooth: true,
areaStyle: {color: 'red'},
data:[170, 182, 161, 184, 160, 180, 165]
},
{
name:'邮件营销',
type:'line',
smooth: true,
areaStyle: {color: 'white'},
data:[120, 132, 111, 134, 110, 130, 115]
}
]
};
What I have achieved:
You need to increase the opacity of the below chart:
option = {
xAxis: {
type: 'category',
boundaryGap: false,
data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
},
yAxis: {
type: 'value'
},
series: [
{
z: -1, // optional, makes the yAxis' splitLines appear on top
data: [170, 182, 161, 184, 160, 180, 165],
smooth: true,
type: 'line',
areaStyle: {}
},
{
z: -1, // optional, makes the yAxis' splitLines appear on top
data: [120, 132, 111, 134, 110, 130, 115],
smooth: true,
type: 'line',
areaStyle: {
color: 'rgb(243, 243, 243)', // color of the background
opacity: 1, // <--- solution
},
}
]
};
The above answer only works if the series do not cross the X axis. Here is the configuration that works if your data is both above and below 0 for both upper and lower boundaries:
data = [{
"date": "2012-08-28",
"l": -2.6017329022,
"u": 0.2949717757
},
{
"date": "2012-08-29",
"l": 0.1166963635,
"u": 0.4324086347
},
{
"date": "2012-08-30",
"l": -0.8712221305,
"u": 0.0956413566
},
{
"date": "2012-08-31",
"l": -0.6541832008,
"u": 0.0717120241
},
{
"date": "2012-09-01",
"l": -1.5222677907,
"u": -0.2594188803
},
{
"date": "2012-09-02",
"l": -1.4434280535,
"u": 0.0419213465
},
{
"date": "2012-09-03",
"l": -0.3543957712,
"u": 0.0623761171
}];
myChart.setOption(option = {
xAxis: {
type: 'category',
data: data.map(function (item) {
return item.date;
})
},
yAxis: {
},
series: [
{
z: -1,
name: 'U',
type: 'line',
data: data.map(function (item) {
return item.u;
}),
lineStyle: {
opacity: 0
},
areaStyle: {
color: '#ccc',
origin: "start"
},
symbol: 'none'
},
{
name: 'L',
type: 'line',
data: data.map(function (item) {
return item.l;
}),
lineStyle: {
opacity: 0
},
z: -1,
areaStyle: {
color: "white",
origin: "start",
// opacity: 1
},
symbol: 'none'
}]
});
Create a third series with the difference between the minimum and maximum values. This data series is used only to be able to color the area between minimum and maximum values.
The stackStrategy option works from version v5.3.3
let max = [10, 22, 28, 20, 23];
let min = [8, 15, 23, 18, 19];
let dif = max.map((v, i) => min[i] - v); // [-2, -7, -5, -2, -4]
option = {
xAxis: {
data: ['A', 'B', 'C', 'D', 'E']
},
yAxis: {},
tooltip: {
trigger: 'axis',
},
series: [
{
data: max,
type: 'line',
stack: 'x', // stack name
},
{
data: dif,
type: 'line',
stack: 'x', // stack name
stackStrategy: 'positive', // strategy
lineStyle: {
opacity: 0 // hide line
},
symbol: 'none', // hide symbol
areaStyle: {
color: '#ccc'
},
tooltip: {
show: false // hide value on tooltip
}
},
{
data: min,
type: 'line',
},
]
};