Chart With Gaps In Data
Breaking the line
If your data contains gaps – data points without values – you can easily make the chart display a gap as well. Just set its connect = false setting.
More about line series with gaps
Defining value ranges
You can apply different colors and other visual properties to the segments of series that fall within certain range of values. For that you can use “axis ranges”.
Demo source
<!-- Styles -->
<style>
#chartdiv {
width: 100%;
height: 500px;
}
</style>
<!-- Resources -->
<script src="https://cdn.amcharts.com/lib/4/core.js"></script>
<script src="https://cdn.amcharts.com/lib/4/charts.js"></script>
<script src="https://cdn.amcharts.com/lib/4/themes/animated.js"></script>
<!-- Chart code -->
<script>
am4core.ready(function() {
// Themes begin
am4core.useTheme(am4themes_animated);
// Themes end
// Create chart instance
var chart = am4core.create("chartdiv", am4charts.XYChart);
// Add data
chart.data = [{
"year": "1950",
"value": -0.307
}, {
"year": "1951",
"value": -0.168
}, {
"year": "1952",
"value": -0.073
}, {
"year": "1953",
"value": -0.027
}, {
"year": "1954",
"value": -0.251
}, {
"year": "1955",
"value": -0.281
}, {
"year": "1956",
"value": -0.348
}, {
"year": "1957",
"value": -0.074
}, {
"year": "1958",
"value": -0.011
}, {
"year": "1959",
"value": -0.074
}, {
"year": "1960",
"value": -0.124
}, {
"year": "1961",
"value": -0.024
}, {
"year": "1962",
"value": -0.022
}, {
"year": "1963",
"value": 0
}, {
"year": "1964",
"value": -0.296
}, {
"year": "1965",
"value": -0.217
}, {
"year": "1966",
"value": -0.147
}, {
"year": "1967"
}, {
"year": "1971",
"value": -0.19
}, {
"year": "1972",
"value": -0.056
}, {
"year": "1973",
"value": 0.077
}, {
"year": "1974",
"value": -0.213
}, {
"year": "1975",
"value": -0.17
}, {
"year": "1976",
"value": -0.254
}, {
"year": "1977",
"value": 0.019
}, {
"year": "1978",
"value": -0.063
}, {
"year": "1979",
"value": 0.05
}, {
"year": "1980",
"value": 0.077
}, {
"year": "1981",
"value": 0.12
}, {
"year": "1982",
"value": 0.011
}, {
"year": "1983",
"value": 0.177
}, {
"year": "1984"
}, {
"year": "1989",
"value": 0.104
}, {
"year": "1990",
"value": 0.255
}, {
"year": "1991",
"value": 0.21
}, {
"year": "1992",
"value": 0.065
}, {
"year": "1993",
"value": 0.11
}, {
"year": "1994",
"value": 0.172
}, {
"year": "1995",
"value": 0.269
}, {
"year": "1996",
"value": 0.141
}, {
"year": "1997",
"value": 0.353
}, {
"year": "1998",
"value": 0.548
}, {
"year": "1999",
"value": 0.298
}, {
"year": "2000",
"value": 0.267
}, {
"year": "2001",
"value": 0.411
}, {
"year": "2002",
"value": 0.462
}, {
"year": "2003",
"value": 0.47
}, {
"year": "2004",
"value": 0.445
}, {
"year": "2005",
"value": 0.47
}];
// Create axes
var dateAxis = chart.xAxes.push(new am4charts.DateAxis());
dateAxis.renderer.minGridDistance = 50;
dateAxis.renderer.grid.template.location = 0.5;
dateAxis.baseInterval = {
count: 1,
timeUnit: "year"
}
var valueAxis = chart.yAxes.push(new am4charts.ValueAxis());
// Create series
var series = chart.series.push(new am4charts.LineSeries());
series.dataFields.valueY = "value";
series.dataFields.dateX = "year";
series.strokeWidth = 3;
series.connect = false;
series.tensionX = 0.8;
series.fillOpacity = 0.2;
var bullet = series.bullets.push(new am4charts.CircleBullet());
bullet.stroke = new am4core.InterfaceColorSet().getFor("background");
bullet.strokeWidth = 2;
bullet.tooltipText = "{valueY}";
bullet.circle.radius = 4;
bullet.adapter.add("fill", function(fill, target){
if(target.dataItem.valueY > 0){
return chart.colors.getIndex(2);
}
return fill;
})
var range = valueAxis.createSeriesRange(series);
range.value = 0;
range.endValue = 100;
range.contents.stroke = chart.colors.getIndex(2);
range.contents.fill = range.contents.stroke;
range.contents.fillOpacity = 0.2;
chart.scrollbarX = new am4core.Scrollbar();
chart.cursor = new am4charts.XYCursor()
}); // end am4core.ready()
</script>
<!-- HTML -->
<div id="chartdiv"></div>