I have an idea how I can improve the user experience by altering some of my charts. Basically I have a column chart, where I display some values per category. The last value I display is the average.
I want to display the average value as a dotted line in each category.
Paint picture of idea displayed as a single category
I have read the documentation more times than I'm happy to admit, but I have still not found a proper solution. My best attempt was to overload the circle symbol in the 'scatter'-series and then redraw it as an SVG.
Does anyone have an idea to how I should approach it? I feel the option must be there, and I'm just missing the forest for the trees.
Best regards,
You can use line series type with calculated data:
const averageData = [3.33, 3.33, 3.66];
const processedAverageData = [];
averageData.forEach((val, index) => {
processedAverageData.push([index - 0.4, val], [index + 0.4, val]);
// To create gaps between categories
processedAverageData.push(null);
});
Highcharts.chart('container', {
chart: {
type: 'column'
},
xAxis: {
type: 'category'
},
series: [{
...
}, {
...
}, {
...
}, {
type: 'line',
data: processedAverageData,
dashStyle: 'dash',
marker: {
enabled: false
}
}]
});
Live demo: http://jsfiddle.net/BlackLabel/t3ejqvun/
API Reference: https://api.highcharts.com/highcharts/series.line
Related
I'm importing a csv file using Highcharts cvsURL for a line chart. I'm using styledMode and I defined the default colors. Highcharts is using my stylesheet. Is there an easy way to tell each series which color to use?
I have lots of lines, so highcharts cycles through its 10 default colors. I need one of the colors to only be assigned to 2 specific series though.
Here is my code so far:
Highcharts.chart('container', {
chart: {
type: 'line',
styledMode: true //this totally separates the design from the svg.
},
data: {
itemDelimiter: ',',
csvURL: 'http://deq.at.utah.gov/wp-content/themes/deq/parts/charts/Ozone-4th-Highest-8hr-Front.csv'
},
title: {
text: 'Ozone 4th Highest 8-hr Concentration Wasatch Front'
},
yAxis: {
title: {
text: '(Ozone PPM)'
}
}
});
I think the API said something about assigning classes to a series. Maybe that would work because I could make custom CSS for only those series, but I can't see how to do that using csvURL.
You can define color or className for series in this way:
data: {
csvURL: '...'
},
series: [{
color: '#00c735'
}, {
color: '#c4392d'
}]
Live demo: https://jsfiddle.net/BlackLabel/kj9udgat/1/
API Reference:
https://api.highcharts.com/highcharts/series.line.className
https://api.highcharts.com/highcharts/series.line.color
I want to draw a line on a ohlc chart, but i dont want the new series to introduce gaps.
The first series (ohlc) should still place the candles in an nica way with constant gaps between them regardles of open-close times (i think its only the "ordinal" value that does this, but unfortunatelly you cant specify it at series level, but only axis level).
xAxis: {
ordinal: true
},
example:
http://jsfiddle.net/5r97owky/8/
Thank you for any help
The gaps are caused by ordinal option. You can create additional xAxis for line series:
Highcharts.stockChart('container', {
chart: {
events: {
load: function() {
var xAxes = this.xAxis,
extremes = xAxes[0].getExtremes();
xAxes[1].setExtremes(extremes.min, extremes.max, true, false);
}
}
},
xAxis: [{}, {
visible: false
}],
...
});
Live demo: http://jsfiddle.net/BlackLabel/1mbo2zp4/
API: https://api.highcharts.com/highstock/xAxis.ordinal
I have created a graph using highcharts which has 6 series. 3 are column series and 3 are spline series.spline series will collide or go within the column chart so having a requirement to add outline to spline series to have better viewing. Trying to add a border color for the spline series but unable to do. But the same is possible in column chart.If anyone have tried this before for spline series kindly help.
plotOptions: {
series: {
borderColor: '#303030'
}
},
this bordercolor is working for column but not in spline series
column chart
http://jsfiddle.net/gh/get/library/pure/highcharts/highcharts/tree/master/samples/highcharts/plotoptions/column-bordercolor/
would like to have border for the below series
http://jsfiddle.net/gh/get/library/pure/highcharts/highcharts/tree/master/samples/highcharts/plotoptions/series-datalabels-box/
There is no such feature in Highcharts to set line border, but all is not lost.
You can achieve the effect you want, by adding new "fake" series basing on every line series, and set a couple of parameters.
Best place (in code) to do that would be the chart.events.load function, so there just find all series with line type:
chart: {
events: {
load() {
var series = this.series.filter(elem => elem.type === 'line')
}
}
}
Then, iterate on all the series found, and create new one so that it would have color: [color_you_want], the same data and marker.symbol, increased lineWidth as well as marker.radius, won't be accessible by mouse and not visible in legend, just like below:
chart: {
events: {
load() {
var series = this.series.filter(elem => elem.type === 'line')
series.forEach(series => {
this.addSeries({
data: series.userOptions.data,
showInLegend: false,
color: '#000',
enableMouseTracking: false,
zIndex: -9999,
marker: {
symbol: series.symbol,
radius: series.options.marker.radius + 1
},
lineWidth: series.options.lineWidth + 2
})
})
}
}
}
Hope, it helps you.
Live example: http://jsfiddle.net/yw2tb4nm/
API Reference:
https://api.highcharts.com/highcharts/chart.events.load
https://api.highcharts.com/highcharts/series.line.marker.symbol
https://api.highcharts.com/highcharts/series.line.marker.radius
https://api.highcharts.com/highcharts/series.line.showInLegend
https://api.highcharts.com/highcharts/series.line.enableMouseTracking
In my area chart I have three series which are presorted chronologically. This is what I am currently getting to display:
I'm using React which is why you see multiple renders, just ignore that. My dates that I am returning for the xAxis are in order but I'm only getting one. Why is that? Here is my code (using React Highcharts but it shouldn't matter I don't think):
xAxis: {
type: 'datetime',
labels: {
formatter: function() {
const dayStr = moment.unix(this.value).format('D');
const monthStr = moment.unix(this.value).format('M');
console.log(`${monthStr}/${dayStr}`, this.value);
return `${monthStr}/${dayStr}`;
},
align: 'left',
style: { "color": "#FFFFFF" }
},
title: {
text: 'Date',
style: { "color": "#FFFFFF" }
}
},
As you can see my formatter function is returning multiple dates but only one displays.
By default Highcharts algorithms decide which ticks to display (labels are drawn where the ticks are). Also some labels might be omitted when there's no enough space to place them.
Use tickPositions to force Highcharts to draw given ticks. You can also try tickPositioner to modify the ticks generated automatically.
API references:
https://api.highcharts.com/highcharts/xAxis.tickPositions
https://api.highcharts.com/highcharts/xAxis.tickPositioner
I have two datasets (red, blue) that have data starting in 9/11 and one (green) with data starting in 2/13. The green one is starting in the same location as the others, but it should start in 2/13. How can I tell this dataset to do that? I'd rather not use 0's if there is a way around it.
You can put JavaScript's null value if you don't have any value. My English may not be that much good to explain but my example is clear. Also you can look at that page: http://www.highcharts.com/demo/area-missing/gray
<script>
$(function () {
$('.graph').highcharts({
chart: { type: 'line'},
plotOptions: { series: { connectNulls: true }},
xAxis: {categories: [2012,2011,2010,2009] },
yAxis: {title: { text: 'Example Fruit Consumption'}},
series: [
{ name:'Apple', data:[null,null,20000,41000]},
{ name:'Orange', data:[29458,29000,26892,23256]}
]
});
});
</script>
You can define pointStart() http://api.highcharts.com/highcharts#plotOptions.series.pointStart for serie.