Different Depth In 3D BarChart in Highcharts - javascript

I know that I can set depth of all bars in Highcharts using depth property in column property of plotOptions likes the following code:
plotOptions: {
column : {
depth: 30
}
}
Or
# in R
hc_plotOptions(column = list(
depth = 30
)
The questions is how can I set different depth for each bar group in a bar chart (not one depth for all)? Solution can be in R (Highcharter) or in JS?

In core code the depth property is always taken from the series object options. Every group consists of the points with the same x values.
These 2 solutions came to my mind:
1. Modify the core code so that depth values are taken from points' configuration instead:
(function(H) {
(...)
H.seriesTypes.column.prototype.translate3dShapes = function() {
(...)
point.shapeType = 'cuboid';
shapeArgs.z = z;
shapeArgs.depth = point.options.depth; // changed from: shapeArgs.depth = depth;
shapeArgs.insidePlotArea = true;
(...)
};
})(Highcharts);
Series options:
series: [{
data: [{y: 5, depth: 50}, {y: 2, depth: 100}]
}, {
data: [{y: 13, depth: 50}, {y: 1, depth: 100}]
}]
Live demo: http://jsfiddle.net/kkulig/3pkon2Lp/
Docs page about overwriting core functions: https://www.highcharts.com/docs/extending-highcharts/extending-highcharts
2. Create a separate series for every point.
depth property can be applied to a series so the modification of the core wouldn't be necessary. Every series is shown in legend by default so series will have to be properly connected using linkedTo property (so that the user doesn't see as many series as points).
Points can be modified before passing them to the chart constructor or dynamically handled in chart.events.load.
Live demo: http://jsfiddle.net/kkulig/37sot3am/
load: function() {
var chart = this,
newSeries = [],
merge = Highcharts.merge,
depths = [10, 100]; // depth values for subsequent x values
for (var i = chart.series.length - 1; i >= 0; i--) {
var s = chart.series[i];
s.data.forEach(function(p, i) {
// merge point options
var pointOptions = [merge(p.options, {
// x value doesn't have to appear in options so it needs to be added manually
x: p.x
})];
// merge series options
var options = merge(s.options, {
data: pointOptions,
depth: depths[i]
});
// mimic original series structure in the legend
if (i) {
options.linkedTo = ":previous"
}
newSeries.push(options);
});
s.remove(true);
}
newSeries.forEach((s) => chart.addSeries(s));
}
API reference:
https://api.highcharts.com/highcharts/plotOptions.series.linkedTo

Related

I am receiving an error from my JS code dealing with a sort function

So I have this code that I'm using for a class, but whenever I run it, nothing shows in the browser and instead under the Console I get an error that says that data.sort is not a function.
Here is the code in its entirety.
// Use d3 to read the JSON file.
// The data from the JSON file is arbitrarily named importedData as the argument.
d3.json("data/data.json").then((importedData) => {
// console.log(importedData);
var data = importedData;
// Sort the data array by using the greekSearchResults value.
data.sort(function(a, b) {
return parseFloat(b.greekSearchResults) - parseFloat(a.greekSearchResults);
});
// Slice the first 10 objects for plotting.
data = data.slice(0, 10);
// Reverse the array because of the Plotly defaults.
data = data.reverse();
// Trace1 for the Greek data.
var trace1 = {
x: data.map(row => row.greekSearchResults),
y: data.map(row => row.greekName),
text: data.map(row => row.greekName),
name: "Greek",
type: "bar",
orientation: "h"
};
// Data
var chartData = [trace1];
// Apply the group bar mode to the layout.
var layout = {
title: "Greek gods search results",
margin: {
l: 100,
r: 100,
t: 100,
b: 100
}
};
// Render the plot to the div tag with the id of "plot".
Plotly.newPlot("plot", chartData, layout);
});
sort is an array method. my guess is that the importedData variable isn't an array, hence you get that error. if you wish to use it, make sure to create an array from the data response.
sort - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort

Set dynamic regions for each y axis group

I would like to implement an alternate region background to the chart, sort of like a striped table look.
Is there a way for me to dynamically set the regions for each y-axis block? Once I can do this, I can just basically use css to set alternating background colors.
The regions can be set statically like this:
http://c3js.org/samples/region.html
To do it dynamically, you'd just need to use the API:
http://c3js.org/reference.html#api-regions e.g.
chart.regions([
{axis: 'x', start: 5, class: 'regionX'},
{axis: 'y', end: 50, class: 'regionY'}
]);
So to get alternating stripes build up a regions array as so after generating your chart object:
// find range of all data
var allData = d3.merge (chart.data().map(function(d) {
return d.values.map (function(dd) { return dd.value; });
}));
var dataRange = d3.extent(allData);
dataRange.min = Math.min (dataRange[0], 0);
dataRange.extent = dataRange[1] - dataRange.min;
// set number of pairs of stripes
var stripeCount = 5;
var step = dataRange.extent / stripeCount;
var newRegions = [];
// then divide the data range neatly up into those pairs of stripes
d3.range(0,stripeCount).forEach (function(d) {
newRegions.push ({axis: 'y', start: dataRange.min+(step*d), end: dataRange.min+(step*(d+0.5)), class: 'stripe1'});
newRegions.push ({axis: 'y', start: dataRange.min+(step*(d+0.5)), end: dataRange.min+(step*(d+1)), class: 'stripe2'});
});
// set the new regions on the chart object
chart.regions(newRegions);
css:
.c3-region.stripe1 {
fill: #f00;
}
.c3-region.stripe2 {
fill: #0f0;
}
(If, alternatively, you wanted to make a new stripe pair every 10 units on the y scale you would just make step=10; and change the d3.range to d3.range(0,dataRange.extent/step))
I forked off someone's bar chart on jsfiddle and added the striping --> http://jsfiddle.net/k9c0peax/

Highcharts: How to exempt a series from redraw zoom calculations?

In this jsfiddle the chart has a nice zoom effect every time the visiblity of a series is toggled.
But when I add the UpperLimit series this effect is lost because that series has the lowest and highest x-values.
How can I make the chart zoom in on the series of my choice and keep other series from affecting zoom boundaries?
{
name: 'UpperLimit',
color: '#FF0000',
dashStyle: 'ShortDash',
showInLegend: false,
//affectsZoomBox: false, //No such thing :(
data: [
[1, 100],
[10, 100]
]
},
I don't think it is possible using configuration of the series. However, if you are willing to hack a bit it will be possible to exclude one or more series from the calculation of axis extremes:
chart.xAxis[0].oldGetSeriesExtremes = chart.xAxis[0].getSeriesExtremes;
chart.xAxis[0].getSeriesExtremes = function() {
var axis = this;
var originalSeries = axis.series;
var series = [];
for (var i = 0; i < originalSeries.length; i++) {
// Filter out the series you don't want to include in the calculation
if (originalSeries[i].name != 'UpperLimit') {
series.push(originalSeries[i]);
}
}
axis.series = series;
axis.oldGetSeriesExtremes();
axis.series = originalSeries;
}
The code shows how to overwrite the getSeriesExtremes function on the axis object. The method is replaced with a wrapper that removes the series that should be excluded, then calls the original function and then restores the original series to the axis.
This is clearly a hack. However, it works on my machine...

Pass parameter to c3js tooltop after .generate() and before .load()

I'm trying to graph out metrics that don't have any relation to one another, so instead of plotting out the actual values, I've calculated an alternate set of values that are scaled between 0-1 like a percentage.
For example: [1, 2, 5] => [0.2, 0.4, 1]
So now I have 2 sets of data - the original and scaled versions. I have the scaled version plotting on to my graph just fine, but I want the tooltip to show the original value to the user. See what I mean?
I checked out http://c3js.org/samples/tooltip_format.html, which shows you can set tooltip as a function when you initially generate the C3 object. But I want to change the tooltip later on after I recalculate my original/scaled values and re-load() the graph.
All attempts I've made to explicitly change myGraph.tooltip.format.value = function (...) {...} after initially setting myGraph = C3.generate({...}) have been unsuccessful.
Any ideas how I can accomplish this without having to regenerate the graph from scratch every time?
You need to override internal.getTooltipContent
var data = ['data1', 30000, 20000, 10000, 40000, 15000, 250000];
// simple fake data
var fakeData = data.map(function (d, i) {
return i ? (d / 100) : d;
})
var chart = c3.generate({
data: {
columns: [
fakeData,
['data2', 100, 200, 100, 40, 150, 250]
],
}
});
// do code to take over mars and plant potatoes
// save the original
var originalGetTooltipContent = chart.internal.getTooltipContent;
chart.internal.getTooltipContent = function (data, defaultTitleFormat, defaultValueFormat, color) {
// we modified the first series, so let's change that alone back
var originalValue = {
id: data[0].id,
index: data[0].index,
name: data[0].name,
// unfaked
value: data[0].value * 100,
x: data[0].x
};
var originalValues = data.map(function (d, i) {
return i ? d : originalValue;
})
return originalGetTooltipContent.call(this, originalValues, defaultTitleFormat, defaultValueFormat, color)
}
I assume you are already doing something about the scaled y axis label?
Fiddle - http://jsfiddle.net/puf248en/
Thanks potatopeelings,
I did turn out solving this one by simply loading the form data in all at once, and then programmatically show/hide certain metrics. So that allowed me to use all the generate() options as intended.
Did try out your solution, and it seemed to do the trick till I found the simpler option. Thanks!

Adding data to a highchart chart using an array with IDs

I want to add a series to a highchart scatterplot where I am naming each point in the series. I create a chart in the following way:
var chart; // globally available
makeCharts = function(){
chart = new Highcharts.Chart({
chart: {
renderTo: 'container1',
type: 'scatter'
},
series: [{
name: 'a',
data: [{
'id': 'point1',
'x': 1,
'y': 2
}, {
'id': 'point2',
'x': 2,
'y': 5
}]
}]
});
}
I would like to be able to update the points on the chart using something like:
chart.series[0].setData([{id:['point3', 'point4', 'point5'], y:[0,1,2], x:[1,2,3]}])
but this is not correct. Is it possible to update a chart using this approach where each point has an ID?
EDIT:
Just to clarify, I would like to be able to pass the arrays directly, rather than adding the data point by point using addPoint(). I could loop through an array and use addPoint() doing something like this:
id:['point3', 'point4', 'point5'];
y:[0,1,2];
x:[1,2,3];
for (i=0; i<x.length; i++)
{
chart.series[0].addPoint({
x: x[[i],
y: y[i],
id: id[i]
});
}
However, this is very slow. It's much quicker to add data using the following approach:
chart.series[0].setData([[1,0],[2,1],[3,2]]);
I have found that I can add data like this:
chart.series[0].setData([[1,0, 'point3'],[2,1, 'point4'],[3,2, 'point5']]);
but then the only way that I can access the id when the point is selected, is through this.point.config[2]. With the following approach I am unable to use chart.get('pointID') to identify a point as I did not set the ID. I want to be able to identify the point using just the ID.
Well broadly speaking there are two ways in which you can modify the chart data dynamically
Series.setData() Use this approach when you want to completely replace the existing data with some new data
Series.addPoint() Use this approach when you want to add a subset of the points dynamically. This method is not just for adding one point at a time, if you read the documentation carefully again you will find that this method takes a boolean redraw argument, and the argument detail is as following
redraw: Boolean
Defaults to true. Whether to redraw the chart after
the point is added. When adding more than one point, it is highly
recommended that the redraw option beset to false, and instead
chart.redraw() is explicitly called after the adding of points is
finished.
In your case, since you want to add a few points dynamically, but retaining the existing points, you should go with approach 2. But you need to use it inside a loop, with the redraw being set to false (hence solving the problem of being slow) and then after the loop, call the redraw method explicitly
Code
var id = ['point3', 'point4', 'point5'],
y = [0, 1, 2],
x = [1, 2, 3];
for (var i = 0; i < x.length; i++) {
chart.series[0].addPoint({
x: x[i],
y: y[i],
id: id[i]
},false);
}
chart.redraw();
Adding multiple points dynamically | Highcharts and Highstock # jsFiddle
Try using series.addPoint.
chart.series[0].addPoint({
x: 0,
y: 0,
id: 'anything'
});
But if you need to set data for series, use
chart.series[0].setData([{
x: 0,
y: 0,
id: 'anything'
},{
x: 2,
y: 2,
id: 'another'
}]);
As soon as you can pass your data like this:
chart.series[0].setData([[1,0, 'point3'],[2,1, 'point4'],[3,2, 'point5']]);
(as you stated in question), I can suggest you to use a little hack.
We'll need to add another statement to method applyOptions of Highcharts.Point prototype.
if (typeof options[0] === 'number' && options[2] && typeof options[2] === 'string') this.id = options[2];
Here you can see it in action.

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