How do I create a draggable plotline in Highcharts? I couldn't find info about this. See please screenshot. You will see a green line on the screenshot. This plotline must be oriented on xAxis and draggable with max and min value on the axis Х. Can you help me? maybe some suggestion or link to official docs. Thank you in advanced.
screenshot
see pls also some short video
https://drive.google.com/open?id=1sHeIZU1S5M15yxbzKWQrTE44pdrUz7PW
You can simply render the rect element using Highcharts.SVGRenderer class, and then handle appropriate events, to change the line position on drag. Everything should be able to achieve on chart.events.load handler. Here is a sample code:
load() {
var chart = this,
lineWidth = 2,
draggablePlotLine = chart.renderer.rect(100, chart.plotTop, lineWidth, chart.plotHeight)
.attr({
fill: 'blue'
})
.add();
chart.container.onmousemove = function(e) {
if (draggablePlotLine.drag) {
let normalizedEvent = chart.pointer.normalize(e),
extremes = {
left: chart.plotLeft,
right: chart.plotLeft + chart.plotWidth
};
// Move line
if (
e.chartX >= extremes.left &&
e.chartX <= extremes.right
) {
draggablePlotLine.attr({
x: e.chartX
})
}
}
}
draggablePlotLine.element.onmousedown = function() {
draggablePlotLine.drag = true
}
draggablePlotLine.element.onmouseup = function() {
draggablePlotLine.drag = false
}
}
Live exampe: https://jsfiddle.net/Lnj7ac42/
API Reference: https://api.highcharts.com/class-reference/Highcharts.SVGRenderer
Related
I have a chart with some indicators below it. Each indicator area consists
of a svg renderer button. so when I use resize property to drag and resize
the panes, the series resized perfectly but the button remains in its same
position, Can we move the button with the resizer?
Here I created a sample link to regenerate
https://jsfiddle.net/q0ybpnvx/2/
Any help will be appreciated. I am having great trouble. Thank you
You can add and position the custom button in render event:
chart: {
events: {
render: function() {
var chart = this;
if (chart.customBtn) {
chart.customBtn.attr({
y: chart.yAxis[1].top,
});
} else {
chart.customBtn = chart.renderer.button(
'sometext',
5,
chart.yAxis[1].top,
function() {
console.log('some task')
}).add()
}
}
}
},
Live demo: https://jsfiddle.net/BlackLabel/b7vq4ecy/
API Reference:
https://api.highcharts.com/highcharts/chart.events.render
https://api.highcharts.com/class-reference/Highcharts.SVGElement#attr
I was able to do something by manually changing the x/y attributes of my svgRenderer label, the same should apply to buttons.
I'm in angular and have a listener for screen resizing:
Also Note that you can change the entire SVGRenderer label with the attr.text property.
this.chart = Highcharts.chart(.....);
// I used a helper method to create the label
this.chart.myLabel = this.labelCreationHelperMethod(this.chart, data);
this.windowEventService.resize$.subscribe(dimensions => {
if(dimensions.x < 500) { //this would be your charts resize breakpoint
// here I was using a specific chart series property to tell where to put my x coordinate,
// you can traverse through the chart object to find a similar number,
// or just use a hardcoded number
this.chart.myLabel.attr({ y: 15, x: this.chart.series[0].points[0].plotX + 20 });
} else {
this.chart.myLabel.attr({ y: 100, x: this.chart.series[0].points[0].plotX + 50 });
}
}
//Returns the label object that we keep a reference to in the chart object.
labelCreationHelperMethod() {
const y = screen.width > 500 ? 100 : 15;
const x = screen.width > 500 ? this.chart.series[0].points[0].plotX + 50 :
this.chart.series[0].points[0].plotX + 20
// your label
const label = `<div style="color: blue"...> My Label Stuff</div>`
return chart.renderer.label(label, x, y, 'callout', offset + chart.plotLeft, chart.plotTop + 80, true)
.attr({
fill: '#e8e8e8',
padding: 15,
r: 5,
zIndex: 6
})
.add();
}
I change the color and radius of my spline's marker as soon as it crosses a certain value by using point.update however now I am aggregating the data using dataGrouping and I have lost that ability. How can I color the aggregated data point?
Currently it is not possible to update grouped points. Please check a thread in this github isssue: https://github.com/highcharts/highcharts/issues/5147
However, you can use attr method directly on SVG point elements:
chart: {
events: {
load: function() {
var points = this.series[0].groupedData;
points.forEach(function(point) {
if (point.y > 30) {
point.graphic.attr({
width: 8,
height: 8,
fill: 'red',
translateX: -2
});
}
});
}
}
}
Live demo: http://jsfiddle.net/BlackLabel/58afeL47/
API Reference: https://api.highcharts.com/class-reference/Highcharts.SVGElement#attr
I'm trying to replicate the effect on the image but with no luck. On another post someone answered on how to achieve multiple axis lines (see link at the end), but I am unable to achieve the style (labels to maximum width inside the gray and blue boxes).
Previous post: Highcharts: How can I achiveve multiple rows on chart labels?
I would use Highcharts.SVGRenderer to draw rect elements, based on the ticks from the second xAxis and translate the labels. Please check the example below:
chart: {
events: {
render: function() {
var ticks = this.xAxis[1].ticks,
x = this.plotLeft,
y = 378,
width,
color = 'blue',
textColor = 'yellow',
height = 28;
if (!this.customTicks) {
this.customTicks = [];
} else {
this.customTicks.forEach(function(cTick) {
cTick.destroy();
});
this.customTicks.length = 0;
}
Highcharts.objectEach(ticks, function(tick) {
if (tick.mark) {
width = tick.mark.getBBox().x - x;
tick.label.element.children[0].setAttribute('fill', textColor);
tick.label.attr({
translateX: -width / 2
});
this.customTicks.push(
this.renderer.rect(
x,
y,
width,
height
).attr({
fill: color
}).add()
)
x = tick.mark.getBBox().x;
if (color === 'blue') {
color = 'gray';
textColor = 'white';
} else {
color = 'blue';
textColor = 'yellow';
}
}
}, this)
this.customTicks.push(
this.renderer.rect(
x,
y,
this.xAxis[1].width + this.plotLeft - x,
height
).attr({
fill: color
}).add()
)
}
}
}
Live demo: https://jsfiddle.net/BlackLabel/s7vfkgzt/
API Reference: https://api.highcharts.com/class-reference/Highcharts.SVGRenderer#rect
I would like to build a chart like this
enter image description here
Drag the red point or two blue lines on the left chart, then the chart will generate the second one on the right.
Please advice me how to do with highcharts or other chart library. Thank you very much!
There is no such feature in Highcharts, and implementation will be not so easy, but I'm not saying it's not possible. In order to achieve the similar effect, you can use renderer feature, generate the circle and lines. Then change their attributes (position and dimensions), when dragging the circle. For example:
chart: {
events: {
load() {
var chart = this,
circleWidth = 5,
circleInitPos = {
x: 100,
y: 100
},
lineWidth = 2,
indicator = chart.renderer.g('indicator').attr('zIndex', 5).add(),
leftLine = chart.renderer.rect(0, circleInitPos.y, circleInitPos.x, lineWidth)
.attr({
fill: 'blue'
})
.add(indicator),
bottomLine = chart.renderer.rect(circleInitPos.x, circleInitPos.y, lineWidth, chart.containerHeight - circleInitPos.y)
.attr({
fill: 'blue'
})
.add(indicator),
circle = chart.renderer.circle(100, 100, circleWidth)
.attr({
fill: 'red'
}).add(indicator);
circle.drag = false;
chart.container.onmousemove = function(e) {
if (circle.drag) {
let normalizedEvent = chart.pointer.normalize(e),
groupPos = indicator.getBBox(),
leftLineLen = chart.plotWidth - e.chartX,
bottomLineLen = chart.plotHeight - e.chartY;
// Recalculate dimensions
leftLine.attr({
width: e.chartX,
y: e.chartY
})
bottomLine.attr({
height: chart.containerHeight - e.chartY,
y: e.chartY,
x: e.chartX
})
circle.attr({
x: e.chartX,
y: e.chartY
})
}
}
circle.element.onmousedown = function() {
circle.drag = true
}
circle.element.onmouseup = function() {
circle.drag = false
}
}
}
},
I prepared the example which shows how to do it, so here it is: https://jsfiddle.net/rgs4v5az/
API Reference: https://api.highcharts.com/class-reference/Highcharts.SVGRenderer
I created a polar graph. It has some complicated title-lables. It looks as expected on desktop:
But when it's on mobile, the title-lables don't have enough room to show up. And HighCharts neither did it for me. So it looks like this:
What I desire is to move the two title-labels under the triangle, without changing how it behaves in Desktop view.
What can I do to achieve this?
Thanks!
You can translate labels using tick.label.attr({ x: new_x }); method. For example, create some reposition method:
function reposition () {
var chart = this,
xAxis = chart.xAxis[0],
tick, bbox, xy;
$.each(xAxis.tickPositions, function(i, pos){
tick = xAxis.ticks[pos];
if (tick && tick.label) {
bbox = tick.label.getBBox(); // get label's bounding box
xy = tick.label.xy; // get label's xy position
if (xy.x - bbox.width < 0) {
tick.label.attr({
x: bbox.width
});
}
if (xy.x + bbox.width > chart.plotWidth + chart.plotLeft) {
tick.label.attr({
x: chart.plotWidth + chart.plotLeft - bbox.width
});
}
}
});
}
Which will be called on each chart redraw and starting load events:
$('#container').highcharts({
chart: {
polar: true,
type: 'line',
events: {
redraw: reposition,
load: reposition
}
},
...
});
Live demo: http://jsfiddle.net/wmgbbp9k/