Unlock the mystery of identifying which trace is selected in the plot.ly JS legend

When using plot.ly, it is possible to set up a listener for legend click events. I am wondering how to determine which trace in the legend was clicked on. To provide a more specific example, let's say there are two traces (trace0, trace1) in a line graph. If the user clicks on trace0 in the legend, I would like to show an alert that says "trace0". Similarly, when the user clicks on trace1 in the legend, I want a different message to appear. While I am able to create alerts successfully, I have not been able to find any documentation on how plot.ly distinguishes between the traces clicked on in the legend. Any guidance would be appreciated!

javascriptplotlyonclicklistener

Answer №1

Reviewing the documentation on Event Handlers reveals that you can access event information through the use of the data attribute.

const trace1 = {
  x: [1, 2, 3, 4],
  y: [10, 15, 13, 17],
  type: 'scatter'
};

const trace2 = {
  x: [1, 2, 3, 4],
  y: [16, 5, 11, 9],
  type: 'scatter'
};

const data = [trace1, trace2];

Plotly.newPlot('myDiv', data);

const myPlot = document.getElementById('myDiv');

myPlot.on("plotly_click", function(data) {
    // retrieve event details from the data
    console.log(data);
});

CodePen Link

Answer №2

When a user clicks on the legend of a specific trace, the id can be retrieved using 'event.curveNumber', as demonstrated below. The code provided fulfills the requirements specified by the original poster.

const plot_container = document.getElementById("plotly-chart"); //please ensure to use the appropriate div id

let data = [
  {
    x: [1, 2, 3, 4, 5],
    y: [10, 12, 8, 15, 11],
    mode: "lines",
    name: "trace0",
  },
  {
    x: [1, 2, 3, 4, 5],
    y: [6, 8, 4, 9, 7],
    mode: "lines",
    name: "trace1",
  },
];

let layout = {
  legend: {
    itemclick: false, // Disabling default click behavior
  },
};

Plotly.newPlot(plot_container, data, layout);

plot_container.on("plotly_legendclick", function (event) {
  alert(data[event.curveNumber]["name"]);
});

If the event is logged to the console, additional details will be displayed.

plot_container.on("plotly_legendclick", function (event) {
  console.log(event);
});

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Adjust the aesthetic based on whether the field is populated or empty

I have a simple text field on my website that triggers a search when the user inputs a value. I am wondering if it is possible to style the text field differently depending on whether it is empty or has content. Specifically, I want to change the border c ...

javascriptmaterial-uitextfield

In NextJS, where is the best place to run sensitive code to ensure it is only executed server-side?

I'm currently exploring the world of NextJS and I am in the process of figuring out how to structure my project with a solid architecture that prioritizes security. However, I find myself at a crossroads when it comes to determining the best place to ...

javascriptreactjsnext.js

Issue with Context Menu Not Triggering on Dynamically Added Elements in JQuery

Check out the JSFiddle Demo Within my email sidebar, I implemented a custom right-click feature that allows users to add new sub-folders. The code snippet below demonstrates how this functionality works: if ($(this).hasClass('NewSubFolder')) { ...

javascriptjquery

retrieving the value of a field within an array

Here is my code snippet: <div class="label">{{ item.data[0] }}</div> and in the view, this is what I have: { "id": 6, "firtname": "JHON ", "lastname": "SCALA", "fullname& ...

javascriptvue.js

Error encountered when asynchronously iterating over an object in TypeScript

Could someone please help me understand why I am getting an error with this code? var promise = new Promise((resolve, reject) => { resolve([1, 2, 3, 4, 5]); }); async function doSomethingAsync() { var data = await promise; data.forEach(v = ...

javascripttypescriptecmascript-6

Utilizing cheerio to set outerHTML in HTML

Could someone kindly assist me with setting the outerHTML of an element using cheerio? I seem to be encountering some issues with this process. For example, let's consider the following HTML structure: <div class="page-info"> <s ...

javascripthtmlnode.jsnpmcheerio

Swapping out the main view for the partial view

Recently, I wrote some jQuery code to fetch data from an action by passing in a dashID. The expected result was to receive HTML containing the relevant information. Unfortunately, my jQuery script is not returning the desired data. Below is the JavaScript ...

javascriptc#jqueryajaxasp.net-mvc-5

Has a newly created element been styled or are all values set to default since it is outside of the DOM?

First, I begin by creating an element: let link = document.createElement('a'); After my document is fully loaded and all styles and scripts are applied. The styles may look something like this: a { background-color: salmon; } Therefore, it w ...

javascriptcssdom

It is not possible to include external JavaScript in a Vue.js web page

Trying to integrate a Google Translate widget onto my webpage has been a bit challenging. Initially, when I added it to a normal webpage, it worked smoothly using the following code: <div class="google_translate" id="google_translate_element"></d ...

javascriptvue.jswebpack

Pass the $scope object from a controller to a modal controller

I am facing an issue with transferring the $scope variable from ctrlone to ctrltwo, which is a modal window on my page. When I open the modal in ctrlone, my code looks like this: var modalInstance = $modal.open({ templateUrl: 'Modal.html&ap ...

javascriptangularjsangularjs-scopebootstrap-modal

Is there a way to make the header reach the full width of the page?

Is there a way to make my header extend across the entire page? I attempted using margin-left and right, but it didn't yield the desired outcome. Header.css .header{ background: green; height: 70px; width: 100%; display: flex; ju ...

javascripthtmlcssreactjsmaterial-ui

Sending a string parameter from an AJAX function to a Spring controller

I'm currently developing a standalone application and facing an issue with passing a string, which is generated from the change event, to the spring controller using the provided code snippet. Here is the HTML CODE snippet: <!DOCTYPE HTML> < ...

javascriptjavaajaxspring-bootspring-mvc

Packing third-party npm modules with Webpack for seamless integration

Description I am currently working on a project that involves nodejs, TypeScript, and express. The source files with a *.ts extension are being bundled using webpack, while the node_modules folder is excluded using webpack-node-externals. However, when I ...

javascriptnode.jsexpresswebpack

``Where can I find information on setting a timeout for a node.js application

Is it feasible to implement a timeout for running node.js? I am faced with the issue of connecting to external services that occasionally do not respond, causing my script to hang and the node.js process to freeze. I am seeking a solution to enforce the t ...

javascriptnode.js

Is there a regular expression that can identify whether a string is included in a numbered list?

Struggling with creating a regular expression to determine if a string is part of a numbered list like those in word processors. Need it to return true only if the string starts with a number, followed by a full stop and a space. Easy for single or doubl ...

javascriptregex

When an anchor link is dynamically created, the `click()` method does not activate the click event

After creating an anchor element using the document.createElement('a') method, I encountered an issue where the click event was not being triggered as expected. To provide more context, refer to the code snippet below: var link = document.create ...

javascriptjqueryhtml

How to Extract a Link from JSON Data in React Native

My JSON data is formatted like this: orderData:"<p>Key VVV: 6326233</p> <p>Download link <a title=\"Movie\" href=\"https://play.google.com/store/movies/details/The_Angry_Birds_Movie_2?id=O_RbjOHHpIs&hl=en\" t ...

javascriptjsonreactjsreact-native

What is the process for combining and compressing an Angular 2 application?

I am currently trying to concatenate and minify an angular2 application. My approach so far involved concatenating all my *.js files (boot.js, application.js then all components) into one file and injecting it into my index.html. I also removed the <s ...

javascripttypescriptgulpangular

After clicking, the React mobile navigation fails to collapse

At a certain breakpoint, my mobile navigation bar appears with a MENU button. When the MENU button is clicked, the menu opens and the button changes to CLOSE. Clicking on CLOSE collapses the menu, returning the button to MENU. However, when I click on th ...

javascriptreactjsreact-router

Conceal virtual keyboard on mobile when in autocomplete box focus

I would like the keyboard to remain hidden when the autocomplete box is focused or clicked, and only appear when I start typing. The code below currently hides the keyboard when any alphabets or numbers are pressed. However, I want the keyboard to be hidd ...

javascriptreactjsmobilematerial-uiautocomplete