How To disable "shadow-gradient" of format? - highcharts

I think it is very strange....
Suddenly, the number of the format has a shade (shadow), but I have not modified the code.
How is this possible?
Before the number was simply BLACK.
http://jsfiddle.net/0fqmoqwa/3/
format: 0

The default dataLabels.style has textShadow: "0 0 6px contrast, 0 0 3px contrast".
You can just overwrite this by setting textShadow: "0". For example:
plotOptions: {
scatter: {
dataLabels: {
style: {
textShadow: "0"
}
}
}
}
See this updated JSFiddle example. The default styles are mentioned in the API documentation.

Related

Highcharts tooltip line height in styled mode

I am trying to increase the line spacing in my Highcharts tooltip in styled mode. I have tried using CSS to set line-height on the .highcharts-tooltip as well as its text and tspan elements:
.highcharts-tooltip,
.highcharts-tooltip text,
.highcharts-tooltip tspan
{
line-height: 40px;
}
I have also tried using the tooltip.style option:
tooltip: {
style: { lineHeight: 40 }
}
Neither approach has any effect in styled mode. Has anyone managed to make this work?
You need to enable useHTML property for a tooltip.
tooltip: {
useHTML: true,
...
}
CSS:
.highcharts-tooltip {
line-height: 40px;
}
Live demo: http://jsfiddle.net/BlackLabel/893k5cnL/
API Reference: https://api.highcharts.com/highcharts/tooltip.useHTML

Highcharts - Piecharts - title generated with useHTML overlaps with tooltip generated using useHTML

When I hover on series, It shows perfect data but title in background is also visible.
See these images
Actual chart
Tooltip
Here is code link - https://jsfiddle.net/gkd/97mk583y/
tooltip & Title both are generated using useHTML: true
How can we make sure title doesn't appear in background of tooltip ?
opacity in background color is already 1.
Because both of this elements are outstanding HTML elements try to use this config rather than inline styling:
"tooltip": {
padding: 0,
"style": {
"color": "#FFFFFF"
},
"enabled": true,
"useHTML": true
},
And CSS:
.highcharts-tooltip>span {
padding: 10px;
margin: 0;
background-color: rgba(0, 0, 0, 1);
z-index: 9999 !important;
}
Demo: https://jsfiddle.net/BlackLabel/z5Lb1hmt/

HighCharts negative color for dataLabels

In HighCharts series can have a color (black) and a negativeColor (red) for positive and negative values easy like this:
series: {
color: 'black',
negativeColor: 'red'
Is there an easy way to do the same for the labels?
plotOptions: {
series: {
dataLabels: {
style: {
color: black
//no negativeColor...
There is no built-in option like that. Still, you can define a data label for each point and set a proper color if the value is negative.
data: data.map(function (point) {
return point < 0
? {y: point, dataLabels: {color: 'black'}}
: point;
})
example: http://jsfiddle.net/s8ay794r/1/

Highcharts tooltip overlap with next chart [duplicate]

My problem is that when the chart drawing area of is smaller than a highchart tooltip, a part of the tooltip is hidden where it overflows the chart drawing area.
I want the tooltip to be visible all the time, no matter the size of the chart drawing area.
No CSS setting helped and no higher z-index setting helped either.
Here is my example... http://twitpic.com/9omgg5
Any help will be mostly apreciated.
Thank you.
This css helped me:
.highcharts-container { overflow: visible !important; }
OK, sorry for the delay. I could not find a better solution, but I found a workaround.
Here is what I did and what I suggest everyone to try:
Set the tooltip.useHTML property to true (now you can have more control with html and CSS). Like this:
tooltip: {
useHTML: true
}
Unset all the default tooltip peoperties that may have something to do with the default tooltip functionalities. Here is what I did...
tooltip: {
shared: false,
borderRadius: 0,
borderWidth: 0,
shadow: false,
enabled: true,
backgroundColor: 'none'
}
Make sure that your chart container's css property "overflow" is set to visible. Also make sure that all DOM elements (div, section, etc....) that hold your chart container also have the css "overflow" property set to "visible". In this way you will make sure that your tooltip will be visibile at all times as it overflows his parent and his other "ancestors" (Is this a correct term? :)).
Customize your tooltip formatter as you wish, using standard CSS styling. Here is what I did:
tooltip.formatter: {
< div class ="tooltipContainer"> Tooltip content here < /div >
}
This is how it all looks like:
tooltip: {
tooltip.formatter: {
< div class ="tooltipContainer"> Tooltip content here < /div >
},
useHTML: true,
shared: false,
borderRadius: 0,
borderWidth: 0,
shadow: false,
enabled: true,
backgroundColor: 'none'
}
If you have a better solution, please post.
A modern approach (Highcharts 6.1.1 and newer) is to simply use tooltip.outside (API):
Whether to allow the tooltip to render outside the chart's SVG element box. By default (false), the tooltip is rendered within the chart's SVG element, which results in the tooltip being aligned inside the chart area. For small charts, this may result in clipping or overlapping. When true, a separate SVG element is created and overlaid on the page, allowing the tooltip to be aligned inside the page itself.
Quite simply this means setting this one value to true, for example:
Highcharts.chart('container', {
// Your options...
tooltip: {
outside: true
}
});
See this JSFiddle demonstration of how setting this value to true fixes space/clipping issues.
Adding simply this CSS worked in my case (minicharts in table cells):
.highcharts-container svg {
overflow: visible !important;
}
The tooltip option useHtml was not required:
tooltip: {
useHTML: false
}
Works on both IE8/9 & FF33.1 (FF was causing trouble).
I recently got the same problem, but with bootstrap container ! (bs3)
None of those solutions worked but I found by my own.
Its due to bootstrap _normalizer properties
svg:not(:root) {
overflow: hidden !important;
}
So add both :
.highcharts-container, svg:not(:root) {
overflow: visible !important;
}
I know the question is old but I just wanted to share my solution, it's based on the other two answers but I think that you obtain a better-looking result with this code:
Tooltip options:
tooltip: {
useHTML: true,
shared: false,
borderRadius: 0,
borderWidth: 0,
shadow: false,
enabled: true,
backgroundColor: 'none',
formatter: function() {
return '<span style="border-color:'+this.point.color+'">' + this.point.name + '</span>';
}
}
CSS:
.highcharts-container {
overflow: visible !important;
}
.highcharts-tooltip span>span {
background-color:rgba(255,255,255,0.85);
border:1px solid;
padding: 2px 10px;
border-radius: 2px;
}
#divContainerId .highcharts-container{
z-index: 10 !important; /*If you have problems with the label hiding behind some other div or chart play with z-index*/
}
None of the solutions worked for me. When the tooltip was bigger than the chart it simply didn't show.
Eventually we realized that Highcharts actually hides the tooltip in the class highcharts-tooltip-box, so the solution is to set it to inherit which the class default:
.highcharts-tooltip-box {
visibility: inherit !important;
}
After that overflow still need to be set to visible:
.highcharts-container,
svg:not(:root),
.chart-container {
overflow: visible !important;
}
And make sure to set the z-index higher in the container if you're having any problems.
I would just like to add an example and prove that .highcharts-tooltip-box
doesn't have to be set for overflow to work.
/* .highcharts-tooltip-box {
visibility: inherit !important;
} */
.highcharts-container,
svg:not(:root),
.chart-container {
overflow: visible !important;
}
Demo:
https://jsfiddle.net/BlackLabel/3fubr1av/

Closely-spaced datalabels are hidden

Some datalabels in my barchart aren't shown: Only one datalabel is shown at the categories "Wohnung Zustand", "Wohnumfeld" and "Wohn- und Nebenkosten".
My current solution is to chose a smaller font-size
dataLabels: {
style: {
fontSize: '7pt',
fontFamily: '"Tahoma"',
fontWeight: 'normal'
}
but now the label is hard to read. I'd like to have a bigger font-size and overlapping labels, but my overflow and crop-settings don't work.
There is an allowOverlap-setting: the chart with overlapping datalabels..
dataLabels: {
enabled: true,
allowOverlap: true,
}

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