I have a highcharts chart with a series of area plots and a line plot with the chart also having an initial background color. The chart has a way to toggle the area and background colors on and off by clicking in the legend (see working jsfiddle). Everything works fine, except for when you turn off the area/background color and try to export the chart. The export always shows the original background color.
http://jsfiddle.net/lamarant/BHkmw/
The code that changes the background color looks like this:
if (doHide) {
this.chart.plotBackground.attr({
fill: '#fff'
});
} else {
this.chart.plotBackground.attr({
fill: '#000'
});
}
Any ideas?
It is related with fact, that during export, chart is generated again, so not include dynamic options (like attr()). So you can set global variable, which will keep "current" background, and in exporting options (chartOptions) use load event, which will set correct background.
exporting: {
chartOptions: {
chart: {
events: {
load: function () {
this.plotBackground.attr({
fill: globalBackground
});
}
}
}
}
},
http://jsfiddle.net/BHkmw/9/
Related
I use reflow = true to make sure my chart fit the width of the container div on resizing the window, so the XAxis will also change.
But when export, different size charts exported as the same size, and the XAxis are not as same as shown.
demo: https://jsfiddle.net/8zb9k5j6/
Is there any way to solve this? Thanks for your help
For example:
Full-screen, my XAxis is (4.Dec, 20.Dec, 3.Jan, 31.Jan, 14.Feb, 28.Feb)
Full-screen
When export as PNG(or whatever), my XAxis is (4.Dec, 20.Dec, 3.Jan, 31.Jan, 14.Feb, 28.Feb), that's what I want.
Full-screen-export
When I zoom out of the browser, the size of the chart will also decrease, my XAxis is (Dec'21, Jan'22, Feb'22)
small-size
When export as PNG(or whatever), my XAxis is (4.Dec, 20.Dec, 3.Jan, 31.Jan, 14.Feb, 28.Feb), that's not what I want, I want (Dec'21, Jan'22, Feb'22).
small-size-export
The chart export function renders the chart from initial - any changes, like zoom, extremes changes are not applied to the chart config. If you want to apply those changes you will need to add custom logic in the load event, like:
chart: {
events: {
load() {
const chart = this;
if (chart.renderer.forExport) {
console.log('aaply custom changes')
}
}
}
},
Demo: https://jsfiddle.net/BlackLabel/wfua8rye/
API: https://api.highcharts.com/highcharts/chart.events.load
I'm currently using a bar graph to display my data. In this div, my bar graph is sitting at 50% width. If the percentage of the bar is too large for the width, the text next to the bar that displays the percentage such as 10% shows in the bar graph itself. Which is fine, but with the using the same color css as the bar graph. In this situation it is hard to read the percentage.
I would like the percentage to use the same color as the bar graph but Is it possible to change the text to white only when this happens?
Here is a photo example:
Here is a code snippet of what i'm using to change the color of the text using plotOptions
plotOptions: {
bar: {
dataLabels: {
enabled: true,
formatter: function() {
return ` <span style="color:${this.color};">${this.y} %</span>`;
}
}
}
},
Here is a link to my jsfiddle where the issue is re-created: https://jsfiddle.net/8g4uL0jm/22/
I think that a better idea will be to change the dataLabels color after their initializing, which gives us information about their positions.
Demo: https://jsfiddle.net/BlackLabel/af02bgs7/
events: {
load() {
let chart = this;
chart.series[0].points.forEach(p => {
if (p.dataLabel.alignOptions.align !== "right") {
p.dataLabel.css({
color: p.color
})
}
})
}
}
API: https://api.highcharts.com/highcharts/chart.events.load
I am attempting to the css color of my legend for my treemap layout.
In my treemap legend I am only displaying the parent's name and color. I would like to do the same but make the parent's name the same color.
For example: low display in blue text, med-low display in green text; while still displaying the color circle next to it.
i've attempted this by using the legend labelFormatter function but it seems to have no affect on my legend.
here is a code snippet of what I tried:
legend: {
labelFormatter: function () {
return `<span style="color:${this.parent.color};"> <br/> ${this.parent.name}</span>`;
}
},
Here is a jsfiddle link to the chart :
The legend object cannot be nested in the chart object config.
Rendering the as a span needs to set the legend.useHTML to true, which allows rendering the legend label as outstanding HTML element which could be styled in this way.
Demo: https://jsfiddle.net/BlackLabel/dmy9uqbe/
legend: {
useHTML: true,
labelFormatter: function() {
return `<span style="color:${this.color};"> <br/> ${this.name}</span>`;
}
},
API: https://api.highcharts.com/highcharts/legend.useHTML
I want to show some bars' tooltip as default (not all of them) without hovering on them. is there any way to do this?
After chart is loaded, you can use onMouseOver point's method to display a tooltip.
chart: {
events: {
load: function() {
this.series[0].points[3].onMouseOver();
}
}
}
Live demo: https://jsfiddle.net/BlackLabel/dnao0rv6/
API Reference: https://api.highcharts.com/class-reference/Highcharts.Point#onMouseOver
is it possible to link/sync 2 chart data in 2 different type of charts to show tooltips at once?
for an example, i have a pie chart and a area chart.
The pie chart represents the percentage of a particular browser and the area chart shows the downloads per year for each browser.
What i need to do is if someone clicks or hovers on section of the pie the relevant line and the tooltip of the area chart should be highlighted...
so when someone clicks/hovers on firefox on the pie, the line relevant to the area should show and vice versa...
is this something possible with highcharts?
So far the work i have done is https://jsfiddle.net/livewirerules/a9tntdam/1/
One thing that i noticed is i have added the event in my area chart to show the color when the tooltip is hovered.
events: {
tooltipRefresh: function(e) {
if (!e.target.hoverSeries) return;
$('.highcharts-tooltip>path:last-of-type')
.css('fill', e.target.hoverSeries.color);
}
}
when i hover a line on the area chart and move to the pie chart, the background color of the tooltips are changed.
I am not sure what would you like to show in a tooltip when you hover on your pie. You have one point so its hard to show tooltip for whole series on another chart.
You can use mouseOver and mouseOut events callback functions for highlighting series (so they will look like on hover):
point: {
events: {
mouseOver: function() {
var name = this.name;
Highcharts.each(chart2.series, function(s) {
if (name === s.name) {
s.setState('hover');
}
});
},
mouseOut: function() {
var name = this.name;
Highcharts.each(chart2.series, function(s) {
if (name === s.name) {
s.setState('');
}
});
}
}
},
You can use tooltip.refresh(point) for refreshing tooltip on specific point:
mouseOver: function(e) {
this.group.toFront();
this.markerGroup.toFront();
var name = this.name;
Highcharts.each(chart.series[0].data, function(p) {
if (name === p.name) {
p.setState('hover');
chart.tooltip.refresh(p)
}
});
},
Here you can see an example how it can work:
http://jsfiddle.net/a9tntdam/4/