When a lot of seriese is given, the title area, legend area, and series area overlap.
Is it an error in the echart or is there an option to prevent overlapping of each area?
I don't want to overlap.. Please help!
Below is the full code and execution image.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>ECharts</title>
<!-- <meta name="viewport" content="width=device-width, initial-scale=1"> -->
<!-- including ECharts file -->
<script src="https://cdn.jsdelivr.net/npm/echarts#4.8.0/dist/echarts.js" integrity="sha256-sUooOytefUADJexb19eGUFQXchr7mptTQkuFlyrU58c=" crossorigin="anonymous"></script>
</head>
<body>
<!-- prepare a DOM container with width and height -->
<div id="main" style="width: 100%;min-height:30rem;"></div>
<script type="text/javascript">
// based on prepared DOM, initialize echarts instance
var myChart = echarts.init(document.getElementById('main'));
var series = [];
var legend_data = [];
for(var cnt=0; cnt <100; cnt++){
var series_item = {
name: 'test'+cnt,
type: 'line',
data: [Math.random(),Math.random(),Math.random(),Math.random(),Math.random(),Math.random()]
};
legend_data.push('test'+cnt);
series.push(series_item);
}
// specify chart configuration item and data
var option = {
title: {
text: 'test status'
},
tooltip: {
trigger: 'axis'
},
legend: {
data:legend_data
},
grid: {
left: '3%',
right: '4%',
bottom: '3%',
containLabel: true
},
toolbox: {
feature: {
saveAsImage: {}
}
},
xAxis: {
data: ["shirt","cardign","chiffon shirt","pants","heels","socks"]
},
yAxis: {
type: 'value'
},
series: series
};
// use configuration item and data specified to show chart
myChart.setOption(option);
</script>
</body>
</html>
enter image description here
You generated 100 series. The yAxis is divided in to 5 parts. 100 / 5 = 20 lines inside each part. The part has height about 50px and line width 1px. if you visually distribute 20 lines in one part, you will see approximately the same density as in the picture.
No, this is not a Echarts bug, it's just too many data and any chart will show the same result. You need to optimize visual (join lines into clister or group, colorize only few lines and set gray for others like focus effect, add dataZoom for control lines number on different zoom level or something else). Also you always have option to reduce data or choose another chart type.
The graph should simplify, not complicate the perception of the data. So if it's impossible then try to make simple table and insert you data. In some cases, this solves the problem of visual chaos.
I am trying to plot a zing chart in angular2. My chart comes out to be like this.
While I want my chart to look like the one I provided below, so that the min and max values of the x-axis are auto adjusted to fit to the area and horizontal width of the chart.
How can I go about doing this? I followed these links but could not get the desired results. Could you point where am I going wrong ?
https://www.zingchart.com/docs/tutorials/chart-elements/configure-chart-scales/#scale-formatting
The options that I gave to plot the chart as follows:
this.charts = [{
id : 'chart-1',
data : {
'type' : 'area',
'scaleX': {
'label': {'text': 'Price'}
},
'scaleY': {
'label': {'text': 'Cumulative Volume'}
},
'plotarea': {
'adjust-layout': true /* For automatic margin adjustment. */
},
'scale-x': {
'auto-fit': true,
'min-value': minValue,
'max-value': maxValue,
'decimals': 2
},
'series': [
{ 'values': this.bidArray },
{ 'values': this.askArray }
],
},
height: 300,
width: 600
}];
}
Edit 1:
bidArray and askArray are of the format array of arrays.
You do not need to set the attribute auto-fit true. This is for charts that have zooming applied.
You do not need to set the attributes min-value or max-value to get the x-axis to fit automatically. It will do this by default.
The problem might lie in the one part of the chart you didn't give any information about. How is your data plotted? What are the value arrays? Array of Arrays?
Post the full chart JSON and I'll get you a demo working. Since your chart is dynamic you can grab the rendering JSON by right clicking on the chart, clicking the View Source option, then copying the contents from the parsed JSON tab.
EDITED NEW ANSWER IN RESPONSE TO FIRST COMMENT BELOW:
Array of arrays does not automatically fit the graph width on scaleX. The reason for this is you are requesting to plot something much more specific than a single dimensional array. So you are right to set the minValue and maxValue.
The main issue is the step value. Since you have defined a step that is less precise than values in the minvalue or maxvalue you must make it match the same precision. For example you put two decimals, execpt your step is set to step:.2 which is only of precision of one decimal. Change that precision to two. step:.01 || .02 to get the desired results you are looking for.
One quick side note. You have two scale-x objects. They get merged internally, but this is dangerous because the lower one will override the first. If you have a large JSON this becomes harder to debug.
demo link
var myConfig = {
"graphset":[
{
"type":"area",
"title":{
"text":"Market Depth",
"font-size":14,
"offset-x":-200,
"offset-y":-5
},
"scaleY":{
"label":{
"text":"Cumulative Volume"
}
},
"plotarea":{
"adjust-layout":true
},
"scale-x":{
"min-value":10.091,
"max-value":11.308,
"step": .01,
"decimals":2,
"label":{
"text":"Price"
}
},
"series":[
{
"values":[[10.091,23128.285630000002],
[10.092,22272.984500000002],
[10.094,22070.219080000003],
[10.118,21630.372470000002],
[10.145,21278.48053],
[10.169,20438.89872],
[10.209,19798.506260000002],
[10.218,19128.53049],
[10.293,18200.525190000004],
[10.316,17625.84755],
[10.341,16860.282690000004],
[10.352,16752.07929],
[10.363,15806.925830000002],
[10.366,15351.489590000001],
[10.372,15088.74344],
[10.393,14793.26244],
[10.401,13968.11667],
[10.423,13873.98204],
[10.456,13655.87469],
[10.476,12866.84064],
[10.535,12518.24981],
[10.602,12503.24074],
[10.623,11940.5453],
[10.632,11939.08057],
[10.634,11838.884329999999],
[10.663,11074.893349999998],
[10.663,10963.316989999998],
[10.666,10584.14343],
[10.667,10358.20835],
[10.671,9942.126730000002],
[10.672,9265.449410000001],
[10.674,8497.838590000001],
[10.679,7865.162790000001],
[10.694,7349.383660000001],
[10.713,6672.761850000002],
[10.736,6026.31731],
[10.741,5674.348190000001],
[10.752,5186.775390000001],
[10.759,4317.745790000001],
[10.807,3807.78019],
[10.827,3638.4528899999996],
[10.831,2816.4248099999995],
[10.834,2426.4046799999996],
[10.854,2423.4017],
[10.854,2184.2459999999996],
[10.855,1448.32144],
[10.856,481.7664500000001],
[10.865,92.60541],
[10.87,59.9149],
[10.874,10.04495]],
backgroundColor: '#424242',
alphaArea:.56,
lineColor: '#424242',
marker: {
backgroundColor:'#424242',
visible:true
}
},
{
"values":[[11.308,26417.464129999997],
[11.285,26220.324189999996],
[11.208,25644.388599999995],
[11.194,25628.031659999997],
[11.188,25031.713569999996],
[11.182,24205.770269999997],
[11.144,23534.17388],
[11.142,22947.082829999996],
[11.113,22639.772689999994],
[11.105,22536.636229999993],
[11.09,21987.267979999993],
[11.087,21137.004579999997],
[11.084,20341.394259999997],
[11.075,19372.91412],
[11.074,18554.458],
[11.064,17632.22014],
[11.053,17063.184230000003],
[11.05,16285.860740000004],
[11.033,15644.169050000006],
[11.022,15330.170840000004],
[11.018,14424.291480000005],
[11.007,13641.930940000004],
[11.001,12755.045610000003],
[10.999,12266.619580000002],
[10.992,12034.113860000001],
[10.981,11362.05282],
[10.98,10739.11108],
[10.977,9945.179989999999],
[10.976,8958.965719999998],
[10.974,8579.633059999998],
[10.972,8124.936529999999],
[10.966,7918.067119999999],
[10.964,7038.952039999999],
[10.962,6756.983329999999],
[10.96,6028.072429999998],
[10.955,5516.051169999999],
[10.946,4738.703779999999],
[10.943,4436.934409999999],
[10.941,4417.186269999998],
[10.94,4120.44594],
[10.939,3830.56787],
[10.925,3414.84425],
[10.923,3335.96724],
[10.922,3025.91816],
[10.92,2119.4797900000003],
[10.908,1469.96346],
[10.903,1269.4567200000001],
[10.892,630.18796],
[10.891,273.01724],
[10.89,103.07879]],
backgroundColor: '#c62828',
alphaArea:.56,
lineColor: '#c62828',
marker: {
backgroundColor:'#c62828',
visible:true
}
}
]
}
]
};
zingchart.render({
id: 'myChart',
data: myConfig,
height: '100%',
width: '100%'
});
html, body {
height:100%;
width:100%;
margin:0;
padding:0;
}
#myChart {
height:100%;
width:100%;
min-height:150px;
}
.zc-ref {
display:none;
}
<!DOCTYPE html>
<html>
<head>
<script src= "https://cdn.zingchart.com/zingchart.min.js"></script>
</head>
<body>
<div id="myChart"><a class="zc-ref" href="https://www.zingchart.com">Powered by ZingChart</a></div>
</body>
</html>
I can't find a good way to size the grid to fit all rows perfectly.
documentation only points to sizing by % or px.
Since I want it to size based on rows, I came up with the following function. Seem like im re-inventing the wheel, so maybe there is a better way?
getHeight(type:EntityType) {
var c = this.Apis[type] && this.Apis[type].api && this.Apis[type].api.rowModel // get api for current grid
? this.Apis[type].api.rowModel.rowsToDisplay.length
: -1;
return c > 0
? (40+(c*21))+'px' // not perfect but close formula for grid height
: '86%';
}
there has to be a less messy way..
I came across this solution:
https://github.com/ag-grid/ag-grid/issues/801
There are 2 answers to this problem.
1) If you are using anything below v10.1.0, then you can use the following CSS to achieve the problem:
.ag-scrolls {
height: auto !important;
}
.ag-body {
position: relative !important;
top: auto !important;
height: auto !important;
}
.ag-header {
position: relative !important;
}
.ag-floating-top {
position: relative !important;
top: auto !important;
}
.ag-floating-bottom {
position: relative !important;
top: auto !important;
}
.ag-bl-normal-east,
.ag-bl-normal,
.ag-bl-normal-center,
.ag-bl-normal-center-row,
.ag-bl-full-height,
.ag-bl-full-height-center,
.ag-pinned-left-cols-viewport,
.ag-pinned-right-cols-viewport,
.ag-body-viewport-wrapper,
.ag-body-viewport {
height: auto !important;
}
2) Anything above v10.1.0, there is now a property called 'domLayout'.
https://www.ag-grid.com/javascript-grid-width-and-height/#autoHeight
If the following is the markup
<ag-grid-angular
#agGrid
id="myGrid"
class="ag-theme-balham"
[columnDefs]="columnDefs"
[rowData]="rowData"
[domLayout]="domLayout"
[animateRows]="true"
(gridReady)="onGridReady($event)"
></ag-grid-angular>
Note that [domLayout]="domLayout"
set it as this.domLayout = "autoHeight"; and you're done..
Ref:
https://www.ag-grid.com/javascript-grid-width-and-height/
https://next.plnkr.co/edit/Jb1TD7gbA4w7yclU
Hope it helps.
You can now automate grid height by setting the domLayout='autoHeight' property, or by calling api.setDomLayout('autoHeight')
reference Grid Auto Height
Add the following code on onGridReady function for auto width and auto height
onGridReady = params => {
// Following line to make the currently visible columns fit the screen
params.api.sizeColumnsToFit();
// Following line dymanic set height to row on content
params.api.resetRowHeights();
};
reference
Auto Height
Auto width
determineHeight() {
setTimeout(() => {
console.log(this.gridApi.getDisplayedRowCount());
if (this.gridApi.getDisplayedRowCount() < 20) {
this.gridApi.setDomLayout("autoHeight");
}
else {
this.gridApi.setDomLayout("normal");
document.getElementById('myGrid').style.height = "600px";
}
}, 500);
}
You can use ag-grid feature AutoHeight = true in the column Configuration. or if you want to calculate the height dynamically you should use getRowHeight() callback and create DOM elements like div and span, and add your text in it, then the div will give the OffsetHeight for it then you wont see any cropping of data/rows.
Hope this helps.
I'm using Chartist for browser visualization.
The requirement here is that I need to add title to the X and Y axis, so that viewers know what does each axis represent. However I went through the online document of Chartist and found no documentation about this. Did I miss something, or this feature is not supported in Chartist? If it's not supported, is there any way to work this out?
You can download and use the Axis Title Plugin developed by Alex Stanbury. This is the code you must add to your existing chart options.
plugins: [
Chartist.plugins.ctAxisTitle({
axisX: {
axisTitle: 'X title',
axisClass: 'ct-axis-title',
offset: {
x: 0,
y: 50
},
textAnchor: 'middle'
},
axisY: {
axisTitle: 'Y title',
axisClass: 'ct-axis-title',
offset: {
x: 0,
y: 0
},
textAnchor: 'middle',
flipTitle: false
}
})
]
I used css for this, try if this help you.
HTML:
<div id="chartist" class="chartist" data-x-axis="X axis label" data-y-axis="Y axis label"></div>
CSS:
[data-x-axis]::before {
content: attr(data-x-axis);
position: absolute;
width: 100%;
text-align: center;
left: 0;
bottom: 0;
font-size: 11px;
color: #777;
}
[data-y-axis]::after {
content: attr(data-y-axis);
position: absolute;
top: 50%;
left: -20px;
font-size: 11px;
color: #777;
text-align: center;
transform: rotate(-90deg)translateY(50%);
}
Titles are currently (June 2015) not supported.
The issue for this suggests that the Chartist authors want you to label the graph outside of Chartist but does include a way to do this in your HTML though with some notable caveats.