Related
Given a stacked bar plot, how can I add labels with the values of each of the bar?
Below is an example of what I'm trying to do:
You can do this by layering a bar mark and a text mark. For example (open in editor):
{
"data": {"url": "data/barley.json"},
"width": 400,
"encoding": {
"x": {
"type": "quantitative",
"aggregate": "sum",
"field": "yield",
"stack": "zero"
},
"y": {"type": "nominal", "field": "variety"}
},
"layer": [
{
"mark": "bar",
"encoding": {"color": {"type": "nominal", "field": "site"}}
},
{
"mark": {"type": "text", "color": "white", "dx": -15, "dy": 3},
"encoding": {
"detail": {"type": "nominal", "field": "site"},
"text": {
"type": "quantitative",
"aggregate": "sum",
"field": "yield",
"format": ".1f"
}
}
}
]
}
I've created a plot using Vega-Lite that allows me to use a binder to alter the parameters of a functions that I'm visualizing. It's similar to this sample code:
{
"$schema": "https://vega.github.io/schema/vega-lite/v4.json",
"description": "Plots two functions using a generated sequence.",
"width": 300,
"height": 150,
"data": {"sequence": {"start": 0, "stop": 12.7, "step": 0.1, "as": "x"}},
"transform": [
{"calculate": "amp.sin * sin(datum.x)", "as": "sin(x)"},
{"calculate": "amp.cos * cos(datum.x)", "as": "cos(x)"},
{"fold": ["sin(x)", "cos(x)"]}
],
"mark": "line",
"encoding": {
"x": {"type": "quantitative", "field": "x"},
"y": {"field": "value", "type": "quantitative"},
"color": {"field": "key", "type": "nominal", "title": null}
},
"selection": {
"amp": {
"type": "single",
"fields": ["sin", "cos"],
"init": {"sin": 1, "cos": 1},
"bind": {
"sin": {"input": "range", "min": 0, "max": 10, "step": 0.1},
"cos": {"input": "range", "min": 0, "max": 10, "step": 0.1}
}
}
}
}
Here is the code above in the Vega editor.
Now, what I'd like to do is to create another visualization parallel to this one, but with another function, but that would also vary with the same binder.
Is this possible? Note that in my code, each plot uses a different dataset, but share the variable of the binder in common.
Yes, for example you can do this using a "concat". Here is an example based on your chart (open in editor):
{
"$schema": "https://vega.github.io/schema/vega-lite/v4.json",
"description": "Plots two functions using a generated sequence.",
"data": {"sequence": {"start": 0, "stop": 12.7, "step": 0.1, "as": "x"}},
"concat": [
{
"width": 300,
"height": 150,
"transform": [
{"calculate": "amp.sin * sin(datum.x)", "as": "sin(x)"},
{"calculate": "amp.cos * cos(datum.x)", "as": "cos(x)"},
{"fold": ["sin(x)", "cos(x)"]}
],
"mark": "line",
"encoding": {
"x": {"type": "quantitative", "field": "x"},
"y": {"field": "value", "type": "quantitative"},
"color": {"field": "key", "type": "nominal", "title": null}
},
"selection": {
"amp": {
"type": "single",
"fields": ["sin", "cos"],
"init": {"sin": 1, "cos": 1},
"bind": {
"sin": {"input": "range", "min": 0, "max": 10, "step": 0.1},
"cos": {"input": "range", "min": 0, "max": 10, "step": 0.1}
}
}
}
},
{
"width": 300,
"height": 150,
"transform": [
{
"calculate": "amp.cos * cos(datum.x) - amp.sin * sin(datum.x)",
"as": "cos(x) - sin(x)"
}
],
"mark": "line",
"encoding": {
"x": {"type": "quantitative", "field": "x"},
"y": {"field": "cos(x) - sin(x)", "type": "quantitative"}
}
}
],
"resolve": {"scale": {"y": "shared", "color": "independent"}}
}
I'm learning How to use Algolia and I have a few questions.
I have the table FreightDriver, which has a relationship one to many with the table Truck
id: ID!
name: String!
email: String!
phoneNumber: String!
cities: [String!]!
state: String!
country: String!
picture: String
trucks: [Truck] #connection(keyName: "byFreightDriver", fields: ["id"])
Then, the table Truck, which has a relationship one to one with the table FreightDriver, and another table, which is Box one to one as well
id: ID!
freightDriverId: ID!
boxId: ID!
brand: String!
model: String!
yearModel: Int!
// and more fields
freightDriver: FreightDriver #connection(fields: ["freightDriverId"])
box: Box #connection(fields: ["boxId"])
and the table Box:
id: ID!
type: String!
width: Float!
height: Float!
depth: Float!
I want to find trucks based on the state and city of the FreightDrivers, and also (if the user needs it), find based on the type of box and brand or model of a truck (just as an example).
Example find by state and city of a FreightDriver:
{
"data": {
"freightDriversByState": {
"items": [
{
"name": "Andrés Montoya",
"cities": [
"GUADALAJARA"
],
"state": "JALISCO",
"country": "MX",
"trucks": {
"items": [
{
"brand": "chevrolet",
"model": "12",
"yearModel": 2020,
"box": {
"type": "Ganadera",
"width": 1,
"height": 2,
"depth": 3
}
},
{
"brand": "chevrolet",
"model": "12",
"yearModel": 2020,
"box": {
"type": "Seca (abierta)",
"width": 12,
"height": 12,
"depth": 12
}
},
{
"brand": "chevrolet",
"model": "12",
"yearModel": 2020,
"box": {
"type": "Seca (abierta)",
"width": 12,
"height": 12,
"depth": 12
}
},
{
"brand": "chevrolet",
"model": "Semi",
"yearModel": 2020,
"box": {
"type": "Seca (abierta)",
"width": 1,
"height": 2,
"depth": 3
}
},
{
"brand": "chevrolet",
"model": "12",
"yearModel": 2020,
"box": {
"type": "Seca (abierta)",
"width": 1,
"height": 2,
"depth": 3
}
},
{
"brand": "chevrolet",
"model": "12",
"yearModel": 2020,
"box": {
"type": "Volcadora",
"width": 1,
"height": 2,
"depth": 3
}
},
{
"brand": "hola",
"model": "12",
"yearModel": 12,
"box": {
"type": "Plataforma",
"width": 1,
"height": 2,
"depth": 3
}
},
{
"brand": "Ford",
"model": "12",
"yearModel": 2020,
"box": {
"type": "Seca (abierta)",
"width": 1,
"height": 2,
"depth": 1
}
},
{
"brand": "dasdas",
"model": "12",
"yearModel": 12231,
"box": {
"type": "Grúa",
"width": 1,
"height": 2,
"depth": 3
}
},
{
"brand": "Tesla",
"model": "Semi",
"yearModel": 2020,
"box": {
"type": "Seca (abierta)",
"width": 4,
"height": 4,
"depth": 2
}
}
]
}
},
{
"name": "Roberto mendez",
"cities": [
"GUADALAJARA"
],
"state": "JALISCO",
"country": "MX",
"trucks": {
"items": []
}
},
{
"name": "Fletes Jalisco Sa de Cv ",
"cities": [
"GUADALAJARA"
],
"state": "JALISCO",
"country": "MX",
"trucks": {
"items": [
{
"brand": "Ford",
"model": "F-450",
"yearModel": 2018,
"box": {
"type": "Seca (cerrada)",
"width": 2.7,
"height": 2.5,
"depth": 4.5
}
},
{
"brand": "Hiundai",
"model": "H100",
"yearModel": 2009,
"box": {
"type": "Seca (abierta)",
"width": 2.3,
"height": 2,
"depth": 4
}
},
{
"brand": "Hiundai",
"model": "H100",
"yearModel": 2020,
"box": {
"type": "Seca (abierta)",
"width": 2.35,
"height": 2,
"depth": 3
}
},
{
"brand": "Ford",
"model": "F-450",
"yearModel": 2018,
"box": {
"type": "Seca (cerrada)",
"width": 2.7,
"height": 2.2,
"depth": 3
}
},
{
"brand": "Ford",
"model": "F-450",
"yearModel": 2004,
"box": {
"type": "Seca (abierta)",
"width": 2.5,
"height": 2,
"depth": 3
}
}
]
}
},
{
"name": "Cotransport",
"cities": [
"GUADALAJARA"
],
"state": "JALISCO",
"country": "MX",
"trucks": {
"items": [
{
"brand": "Chevrolet",
"model": "CX-5",
"yearModel": 2019,
"box": {
"type": "Seca (cerrada)",
"width": 4,
"height": 3,
"depth": 4
}
}
]
}
},
{
"name": "Andrés",
"cities": [
"EL LIMÓN",
"MAGDALENA",
"SANTA MARÍA DEL ORO",
"GUADALAJARA",
"ETZATLÁN"
],
"state": "JALISCO",
"country": "MX",
"trucks": {
"items": [
{
"brand": "chevrolet",
"model": "12",
"yearModel": 2020,
"box": {
"type": "Seca (abierta)",
"width": 1,
"height": 2,
"depth": 3
}
}
]
}
}
]
}
}
}
But, if I want to find using the state and city of a freight driver, the type of box and the model or brand of a truck, that's where the problem comes, because I'm using Dynamodb and this one does not have relationships, so, it's a little bit tricky to get the exact data. That's why I'd like to use Algolia, but how do I format the data for Algolia in this case? What do I need to do? thanks!
If someone is interested, here's the answer https://discourse.algolia.com/t/how-to-format-data-to-algolia/10897
Sample Code
JsFiddle Example for below code.
Highcharts.chart('container', {
chart: {
plotBackgroundColor: null,
plotBorderWidth: null,
plotShadow: false,
type: 'pie'
},
title: {
text: 'Browser market shares in January, 2018'
},
tooltip: {
pointFormat: '{series.name}: <b>{point.percentage:.1f}%</b>'
},
plotOptions: {
pie: {
allowPointSelect: true,
cursor: 'pointer',
dataLabels: {
enabled: true,
format: '<b>{point.name}</b>: {point.percentage:.1f} %'
}
}
},
series: [{
name: 'Brands',
colorByPoint: true,
data: [
{
"name": "Display",
"y": 0.1,
"value": 5
},
{
"name": "Paid Social",
"y": 0,
"value": 0,
sliced: true,
selected: true
},
{
"name": "Direct",
"y": 14.5,
"value": 559
},
{
"name": "Referral",
"y": 2,
"value": 77
},
{
"name": "Email",
"y": 4,
"value": 152
},
{
"name": "Other",
"y": 0,
"value": 1
},
{
"name": "Organic Search",
"y": 23.4,
"value": 901
},
{
"name": "Meta Search",
"y": 0.2,
"value": 5
},
{
"name": "Organic Social",
"y": 2.4,
"value": 93
},
{
"name": "Directory",
"y": 0.2,
"value": 9
},
{
"name": "Other Advertising",
"y": 0.1,
"value": 3
},
{
"name": "OTA Referral Traffic",
"y": 0.7,
"value": 26
},
{
"name": "Paid Search",
"y": 27.8,
"value": 1068
},
{
"name": "Local",
"y": 24.5,
"value": 941
}]
}]
});
Scenario
I want to display dataLabels for all even y value is zero.
In Above code We have "name": "Display" y=0.1 but still it is not displaying in Pie Chart don't know why. If any one have idea about this problem please let me know.
The dataLabels are hidden due to lack of space and overlapping. As a solution you can set: padding: 0
plotOptions: {
pie: {
...,
dataLabels: {
padding: 0,
...
}
}
}
Live demo: https://jsfiddle.net/BlackLabel/g5s27tyb/
API Reference: https://api.highcharts.com/highcharts/plotOptions.pie.dataLabels.padding
Vega is available as CDN script that can be included in HTML & used directly in js code.
But, how to proceed if we wish to use the same with generic web components built with polymer or StencilJS. including CDN js is not a good idea there.
Is there any way to include vega as npm module in such projects ?
have a look at this fiddle it is a native webComponent using vega:
<script src="https://cdn.jsdelivr.net/npm/vega#5"></script>
<script src="https://cdn.jsdelivr.net/npm/vega-lite#3"></script>
<script src="https://cdn.jsdelivr.net/npm/vega-embed#4"></script>
<script type="module">
const barChart = {
"$schema": "https://vega.github.io/schema/vega/v5.json",
"width": 400,
"height": 200,
"padding": 5,
"data": [
{
"name": "table",
"values": [
{"category": "A", "amount": 28},
{"category": "B", "amount": 55},
{"category": "C", "amount": 43},
{"category": "D", "amount": 91},
{"category": "E", "amount": 81},
{"category": "F", "amount": 53},
{"category": "G", "amount": 19},
{"category": "H", "amount": 87}
]
}
],
"signals": [
{
"name": "tooltip",
"value": {},
"on": [
{"events": "rect:mouseover", "update": "datum"},
{"events": "rect:mouseout", "update": "{}"}
]
}
],
"scales": [
{
"name": "xscale",
"type": "band",
"domain": {"data": "table", "field": "category"},
"range": "width",
"padding": 0.05,
"round": true
},
{
"name": "yscale",
"domain": {"data": "table", "field": "amount"},
"nice": true,
"range": "height"
}
],
"axes": [
{ "orient": "bottom", "scale": "xscale" },
{ "orient": "left", "scale": "yscale" }
],
"marks": [
{
"type": "rect",
"from": {"data":"table"},
"encode": {
"enter": {
"x": {"scale": "xscale", "field": "category"},
"width": {"scale": "xscale", "band": 1},
"y": {"scale": "yscale", "field": "amount"},
"y2": {"scale": "yscale", "value": 0}
},
"update": {
"fill": {"value": "steelblue"}
},
"hover": {
"fill": {"value": "red"}
}
}
},
{
"type": "text",
"encode": {
"enter": {
"align": {"value": "center"},
"baseline": {"value": "bottom"},
"fill": {"value": "#333"}
},
"update": {
"x": {"scale": "xscale", "signal": "tooltip.category", "band": 0.5},
"y": {"scale": "yscale", "signal": "tooltip.amount", "offset": -2},
"text": {"signal": "tooltip.amount"},
"fillOpacity": [
{"test": "datum === tooltip", "value": 0},
{"value": 1}
]
}
}
}
]
}
class VegaElement extends HTMLElement {
constructor() {
super()
this.innerHTML = "<div id='view'></div>"
}
connectedCallback() {
vegaEmbed( '#view', barChart ); }
}
customElements.define('vega-element', VegaElement);
</script>
<vega-element></vega-element>