I have a highchart of type "arearange" line, such like
http://jsfiddle.net/gh/get/jquery/3.1.1/highslide-software/highcharts.com/tree/master/samples/highcharts/demo/arearange-line/
I want to use negative color for line, whenever the line is going beyond (or crossing) the range value. To achive this we can use "threshold" in "series" attribute, but my problem is, i do not have a single threshold value, when ever the line crosses the range value, i want to plot the line in negative color.
Below is the sample code can be executed in above fiddle link. Where i mentioned few values (for example) to be plotted in negative color, which is indicated in below code with command line ("Here i want a negative color").
$(function () {
var ranges = [
[1246406400000, 14.3, 27.7],
[1246492800000, 14.5, 27.8],
[1246579200000, 15.5, 29.6],
[1246665600000, 16.7, 30.7],
[1246752000000, 16.5, 25.0],
[1246838400000, 17.8, 25.7],
[1246924800000, 13.5, 24.8],
[1247011200000, 10.5, 21.4],
[1247097600000, 9.2, 23.8],
[1247184000000, 11.6, 21.8],
[1247270400000, 10.7, 23.7],
[1247356800000, 11.0, 23.3],
[1247443200000, 11.6, 23.7],
[1247529600000, 11.8, 20.7],
[1247616000000, 12.6, 22.4],
[1247702400000, 13.6, 19.6],
[1247788800000, 11.4, 22.6],
[1247875200000, 13.2, 25.0],
[1247961600000, 14.2, 21.6],
[1248048000000, 13.1, 17.1],
[1248134400000, 12.2, 15.5],
[1248220800000, 12.0, 20.8],
[1248307200000, 12.0, 17.1],
[1248393600000, 12.7, 18.3],
[1248480000000, 12.4, 19.4],
[1248566400000, 12.6, 19.9],
[1248652800000, 11.9, 20.2],
[1248739200000, 11.0, 19.3],
[1248825600000, 10.8, 17.8],
[1248912000000, 11.8, 18.5],
[1248998400000, 10.8, 16.1]
],
averages = [
[1246406400000, 81.5],**//Here i want a negative color**
[1246492800000, 22.1],
[1246579200000, 3], **//Here i want a negative color**
[1246665600000, 23.8],
[1246752000000, 21.4],
[1246838400000, 21.3],
[1246924800000, 18.3],
[1247011200000, 15.4],
[1247097600000, 16.4],
[1247184000000, 17.7],
[1247270400000, 17.5],
[1247356800000, 17.6],
[1247443200000, 17.7],
[1247529600000, 16.8],
[1247616000000, 17.7],
[1247702400000, 16.3],
[1247788800000, 17.8],
[1247875200000, 18.1],
[1247961600000, 17.2],
[1248048000000, 14.4],
[1248134400000, 13.7],
[1248220800000, 15.7],
[1248307200000, 34.6],**//Here i want a negative color**
[1248393600000, -15.3],
[1248480000000, 15.3],
[1248566400000, 15.8],
[1248652800000, 15.2],
[1248739200000, 14.8],
[1248825600000, 14.4],
[1248912000000, 15],
[1248998400000, 90.6] `//Here i want a negative color`
];
Highcharts.chart('container', {
title: {
text: 'July temperatures'
},
xAxis: {
type: 'datetime'
},
yAxis: {
title: {
text: null
}
},
tooltip: {
crosshairs: true,
shared: true,
valueSuffix: '°C'
},
legend: {
},
series: [{
name: 'Temperature',
data: averages,
zIndex: 1,
marker: {
fillColor: 'white',
lineWidth: 2,
lineColor: Highcharts.getOptions().colors[0]
}
}, {
name: 'Range',
data: ranges,
type: 'arearange',
lineWidth: 0,
linkedTo: ':previous',
color: Highcharts.getOptions().colors[0],
fillOpacity: 0.3,
zIndex: 0
}]
});
});
Using zones or multicolor series plugin can give you expected effect. You can also find the answer to your question here, at the official Highcharts forum: http://forum.highcharts.com/highcharts-usage/arearange-dynamic-threshold-value-change-color-t37236/.
API Reference:
http://api.highcharts.com/highcharts/series%3Cline%3E.zones
Examples:
http://jsfiddle.net/k1bL3umw/ - using zones
http://jsfiddle.net/q0uh8z34/ - using multi color series plugin