I'm using reveal.js (http://lab.hakim.se/reveal-js/) together with Highcharts JS but i have problems with tooltips position. For example, if i use a line with the months on the x axis, when i put the mouse over the point in january the tooltip its ok, but when i put the mouse over december the tooltip shows me the october data. The tooltip for each month is displaced more and more.
You can see http://lideria.net/presentacion/index1.php to see the problem
This may be problem with Highcharts which us already reported here. Also there is suggested workaround: http://jsfiddle.net/highcharts/BD3R7/
reveal.js autoscales the viewport with a css zoom tag. If you inspect class="slides" div, you'll see something like this:
<div class="slides" style="width: 960px; height: 700px; zoom: 0.8331428571428572;">
Here the content (the chart) is scaled 80% of normal size and Highcharts loses it's ability to calculate positions properly if the chart is scaled outside of its control.
With that knowledge, a quick stack overflow search talks about the ability to force 'reveal.js` to not auto-scale content.
You must overwrite the normalize of the H.Pointer.prototype (referenced WRAPPING UP A PLUGIN). Add the following code to document.ready function (maybe somewhere else works, I guess). The reasons are:
reveal.js has separate ways when zoom>1 and zoom<1, e.g., zoom:1.25 and transform:scale(0.75).
So, when a section has several charts and zoom>1, must adjust e.chartX by e.pageX.
(function (H) {
H.wrap(H.Pointer.prototype, 'normalize', function (proceed, e) {
var e = proceed.call(this,e);
var zoom = Reveal.getScale();
if(zoom>1) {
var positionX = e.pageX - e.chartX;
var positionY = e.pageY - e.chartY;
e.chartX = Math.round((e.pageX - positionX*zoom)/zoom);
e.chartY = Math.round((e.pageY - positionY*zoom)/zoom);
} else {
e.chartX = Math.round(e.chartX/zoom);
e.chartY = Math.round(e.chartY/zoom);
}
return e;
});
}(Highcharts));
Related
I have a system with lots of highcharts which can be positioned basically anywhere on the page.
Some are very small (e.g. 50px x 50px).
I see we can set tooltip.outside : true
tooltip: {
outside: true
}
This stops the tooltip taking over the whole chart container by breaking it out of the chart and into the window.
However this can cause overflow issues with the window when you're near the edge of the page and I personally prefer a static tooltip.
I'd like to always fix the tooltip to float above the chart, top left with a bit of padding, which for my application will almost always be visible and will avoid overflow issues, e.g.;
I've looked into setting a custom positioner, however, as the "outside" tooltip is now part of the window and not relative to the chart, the positioner sets a fixed position, which isn't suitable for my application.
I'd like the tooltip to always be above the chart regardless of mouse or scroll positions.
Of course I could add a custom element and position it above the chart myself, then applying the tooltip to that, but we have a lot of charts and this seems cumbersome.
Tooltip outside Fiddle
Suggestions?
Thanks
After a bit of poking around in the highstock Tooltip.prototype.getPosition code, it turns out what I needed was this.point.chart.pointer.getChartPosition();
tooltip: {
distance: 40,
outside: true,
positioner: function () {
var point = this;
var chart = point.chart;
var chartPosition = chart.pointer.getChartPosition();
var distance = point.distance;
//Position relative to renderTo container
return {
x: chartPosition.left - distance,
y: chartPosition.top - distance - (point.options.useHTML == true ? point.label.div.offsetHeight : point.label.height)
}
//Alternatively - Position relative to chart plot (ignoring legend)
var containerScaling = chart.containerScaling;
var scaleX = function (val) {
return (containerScaling ? val * containerScaling.scaleX : val);
};
var scaleY = function (val) {
return (containerScaling ? val * containerScaling.scaleY : val);
};
return {
x: chartPosition.left - distance + scaleX(chart.plotLeft),
y: chartPosition.top - distance + scaleY(chart.plotTop) - point.label.height
}
},
},
See working fiddle.
I find it odd that this method is attached to pointer, but it's what I was after.
One thing to note, in the fiddle I use point.label.height, if useHTML:true; use point.label.div.height.
What about using the positioner callback without setting the 'outside' option? It will set the wanted position inside the chart area.
Demo: https://jsfiddle.net/BlackLabel/gabjwd2e/
API: https://api.highcharts.com/highcharts/tooltip.positioner
When using stacked columns, I would like the tooltip to be positioned above the stacked columns. Right now, the tooltip will appear above the hovered part of the column, like this:
I would like the tooltip to always appear above the stacked columns regardless of the hovered part, like this:
(source: i.ibb.co)
I know about the positioner method, but this function doesn't seem to receive the proper parameters for me to position the tooltip above the stacked columns. In particular I don't know how to properly get the coordinates of the hovered column, all I get is the global position of the cursor.
You can use the shared parameter for a tooltip:
tooltip: {
shared: true
}
Live demo: http://jsfiddle.net/BlackLabel/us4h659d/
API Reference: https://api.highcharts.com/highcharts/tooltip.shared
So I finally managed to do it using Axis.toValue() and Axis.toPixels() values:
https://api.highcharts.com/class-reference/Highcharts.Axis
For my solution to work you need to have a way to get the total value of a stacked column. There may be a way to do it using only the Highcharts object, but I don't like messing too much with the internals of Highcharts for compatibility reasons.
Here's what the positioner method could look like:
function positioner(labelWidth, labelHeight, point)
{
// Default position, assuming mChart is the Highcharts object
var chartY = point.plotY + mChart.plotTop;
var chartX = point.plotX + mChart.plotLeft;
// Move chartY above the stacked column, assuming getTotalColumnValue() exists
var category = Math.round(mChart.xAxis[0].toValue(point.plotX, true));
if(category in mChart.xAxis[0]['categories'])
chartY = mChart.yAxis[0].toPixels(getTotalColumnValue(category), false);
// Move tooltip above the point, centered horizontally
return {
x: chartX - labelWidth / 2,
y: chartY - labelHeight - 10,
};
}
I'd like to be able to be able to dynamically toggle the presence of the Highstock navigator and allow the chart to expand into the vertical space it occupied.
I've tried simply toggling chart.userOptions.navigator.enabled but it has no effect.
This thread explains how to use .hide() and .show() methods to conceal the individual components of the navigator and scrollbar, but these use visibility:hidden so the space does not become available for the chart. However, using .css({display: 'none'}) works, but the series itself has no .css() method, and I've been unable to find a way of removing the series from just the navigator.
Does anyone know a method to achieve what I want?
Thanks.
In short: it's not supported to hide navigator in real time. The best way would be to destroy chart and create new one with disabled navigator.
Other solution is to use workaround provided by Sebastian Bochan. Then you will need to update manually yAxis.height, for example: http://jsfiddle.net/dJbZT/91/
$('#btn').toggle(function () {
chart.yAxis[0].defaultHeight = chart.yAxis[0].height;
chart.xAxis[0].defaultHeight = chart.xAxis[0].height;
chart.yAxis[0].update({
height: 500 - chart.plotTop - 35
}, false);
chart.xAxis[0].update({
height: 500 - chart.plotTop - 35
});
chart.scroller.xAxis.labelGroup.hide();
chart.scroller.xAxis.gridGroup.hide();
chart.scroller.series.hide();
chart.scroller.scrollbar.hide();
chart.scroller.scrollbarGroup.hide();
chart.scroller.navigatorGroup.hide();
$.each(chart.scroller.elementsToDestroy, function (i, elem) {
elem.hide();
})
}, function () {
chart.yAxis[0].update({
height: chart.yAxis[0].defaultHeight
}, false);
chart.xAxis[0].update({
height: chart.xAxis[0].defaultHeight
});
chart.scroller.xAxis.labelGroup.show();
chart.scroller.xAxis.gridGroup.show();
chart.scroller.series.show();
chart.scroller.navigatorGroup.show();
chart.scroller.scrollbar.show();
chart.scroller.scrollbarGroup.show();
$.each(chart.scroller.elementsToDestroy, function (i, elem) {
elem.show();
})
});
There's another way to do this: reduce the chart height by the navigator's height, and set chart.reflow to false to prevent the Y-axis from adapting to the new chart height (try setting it to true in the fiddle -- notice the flicker when you show / hide the navigator?).
I've added this answer to the other thread, and the demo is here: http://jsfiddle.net/dJbZT/148/ (credits to Sebastian Bochan for the original answer).
I'm not sure when highcharts added this ability via options, but this worked for me:
var chart = $('#graphContainer').highcharts();
chart.options.navigator.enabled = !chart.options.navigator.enabled;
$('#graphContainer').highcharts(chart.options);
I've installed Datepicker for Bootstrap and its working nicely. But I can't figure out how to use the place method to position the datepicker above the element instead of below. I'm guessing it works similiar to the bootstrap popovers, but I haven't been able to figure it out.
Any suggestions?
The place function just auto places the date picker under your input box. Its not a function that lets you select where you want to place it.
However you can easily override the default functionality of that function with your own custom placement.
Here is an example of that http://jsfiddle.net/G7sWL/19/
All i did copy the original function and add an additional vertical offset of 10 and horizontal offset of 50.
$(function() {
var picker = $('.datepicker').datepicker();
var widget = picker.data('datepicker');
widget.place = function(){ //the original place function
var offset = this.component ? this.component.offset() : this.element.offset();
this.picker.css({
top: offset.top + this.height + 10, // change #1 = added "+10"
left: offset.left +50 // change #2 = added "+50"
});
}
});
From the page:
.datepicker('place')
Updates the date picker's position relative to the element
It only says it updates the position of the picker (which is absolutely positioned on the page), not that you can change its placement.
Using this example: http://jsfiddle.net/gh/get/jquery/1.7.2/highslide-software/highcharts.com/tree/master/samples/stock/demo/candlestick-and-volume/
When you hover over points on the chart, you get a nice vertical line showing you which point you're currently on. I want to modify the click event so that the vertical line stays when I hover away after a click. Changing the line color would be ideal on click, but not necessary.
If I click another point I'd want to remove any previous lines. Any ideas on how I could accomplish this?
The above solution like I said, is really cool, but is kind of a hack (getting the path of the crosshair) into the implementation details of highcharts, and may stop working in future releases, may not be totally cross browser (esp since <IE8 do not support SVG, the adding path may still work as it should be handled by highchart's add path method, but getting the crosshair's path may not work, I may be wrong, am an SVG noob). So here I give you the alternate solution of dynamically adding plotLines. PlotLines also allow some additional features like dashStyles, label etc.
get the axis and x value of point clicked (may not exactly overlap the crosshair)
var xValue = evt.xAxis[0].value;
var xAxis = evt.xAxis[0].axis;
Or
EDIT If you want to have the plotLine at the location of the crosshair and not the click position, you can use following formula (No direct API to get this, obtained from source code hence may stop working if code changes)
var chart = this;
var index = chart.inverted ? chart.plotHeight + chart.plotTop - evt.chartY : evt.chartX - chart.plotLeft;
var xValue = chart.series[0].tooltipPoints[index].x;
Add plotline
xAxis.addPlotLine({
value: xValue,
width: 1,
color: 'red',
//dashStyle: 'dash',
id: myPlotLineId
});
You can cleanup existing plotline
$.each(xAxis.plotLinesAndBands,function(){
if(this.id===myPlotLineId)
{
this.destroy();
}
});
OR
try {
xAxis.removePlotLine(myPlotLineId);
} catch (err) {}
Putting the pieces together
var myPlotLineId="myPlotLine";
...
var chart=this;
index = chart.inverted ? chart.plotHeight + chart.plotTop - evt.chartY : evt.chartX - chart.plotLeft;
var xValue = chart.series[0].tooltipPoints[index];
// var xValue = evt.xAxis[0].value; // To use mouse position and not crosshair's position
var xAxis = evt.xAxis[0].axis;
$.each(xAxis.plotLinesAndBands,function(){
if(this.id===myPlotLineId)
{
this.destroy();
}
});
xAxis.addPlotLine({
value: xValue,
width: 1,
color: 'red',
//dashStyle: 'dash',
id: myPlotLineId
});
...
Add plot lines at click position # jsFiddle
Persist crosshair/cursor as plot lines on click # jsFiddle
You can do it in several ways
Highchart has a very cool renderer that allows you to add various graphics to the chart. One of the options is to add a path I will be illustrating the same here.
We shall reuse the path of the crosshair and add the same to the chart with some additional styles like color you mentioned. The path of the crosshair can be optained as this.tooltip.crosshairs[0].d this is in string form and can be easily converted to an array using the Array.split() function
click: function() {
this.renderer.path(this.tooltip.crosshairs[0].d.split(" ")).attr({
'stroke-width': 2,
stroke: 'red'
}).add();
}
This will accomplish adding the line. You can store the returned object into a global variable and then when you are about to add another such line, you can destroy the existing one by calling Element.destroy()
var line;
...
chart:{
events: {
click: function() {
if (line) {
line.destroy();
}
line = this.renderer.path(this.tooltip.crosshairs[0].d.split(" ")).attr({
'stroke-width': 2,
stroke: 'red'
}).add();
}
}
...
Persist tooltip / crosshair on click # jsFiddle
Assuming you don't have much meta data to be shown along with the line, this is the easiest (or the coolest :) ) approach. You can also attach meta data if you want to using the renderer's text object etc.
An alternate way could be adding vertical plotLines to the xAxis
UPDATE
Refer my other solution to this question, that would work with zoom,scroll,etc