{"id":175305,"date":"2023-12-17T09:43:27","date_gmt":"2023-12-17T08:43:27","guid":{"rendered":"https:\/\/datascientest.com\/en\/?p=175305"},"modified":"2023-12-17T09:49:40","modified_gmt":"2023-12-17T08:49:40","slug":"altair-everything-you-need-to-know-about-this-statistical-visualization-library","status":"publish","type":"post","link":"https:\/\/datascientest.com\/en\/altair-everything-you-need-to-know-about-this-statistical-visualization-library","title":{"rendered":"Alta\u00efr: everything you need to know about this statistical visualization library"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"175305\" class=\"elementor elementor-175305\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7333635 e-flex e-con-boxed e-con\" data-id=\"7333635\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-404b876 elementor-widget elementor-widget-heading\" data-id=\"404b876\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h2 class=\"elementor-heading-title elementor-size-default\">Altair is the brightest star in the Eagle constellation. But Altair is also a statistical visualization library that works with a visual grammar. Find out in this article how it's used and why it's so popular...<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e9fd39c e-flex e-con-boxed e-con\" data-id=\"e9fd39c\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9ac520c elementor-widget elementor-widget-heading\" data-id=\"9ac520c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What is Altair?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-93a50e7 elementor-widget elementor-widget-text-editor\" data-id=\"93a50e7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><strong>Alta\u00efr<\/strong> is an <a href=\"https:\/\/datascientest.com\/en\/open-source-definition-use-cases-and-more\">open-source library<\/a> for declarative statistical visualization grammar, known as Vega-Alta\u00efr. It simplifies the process of creating professional-looking charts, provides a natural syntax, and produces<a href=\"https:\/\/datascientest.com\/en\/seaborn-everything-you-need-to-know-about-the-python-data-visualization-tool\"> high-quality visualizations that outperform Seaborn<\/a> or Matplotlib, even when dealing with datasets containing up to 100,000 points. Explore this powerful library and its full documentation to unlock its potential.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d0515f4 e-flex e-con-boxed e-con\" data-id=\"d0515f4\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e3a5581 elementor-widget elementor-widget-heading\" data-id=\"e3a5581\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">How do I install and use Alta\u00efr?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c7302c9 elementor-widget elementor-widget-text-editor\" data-id=\"c7302c9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul><li style=\"font-weight: 400;\" aria-level=\"1\">Install with pip install altair<\/li><li style=\"font-weight: 400;\" aria-level=\"1\">Import it to the notebook using altair as alt<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b206f32 elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"b206f32\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn to use Alta\u00efr<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3c467f9 e-flex e-con-boxed e-con\" data-id=\"3c467f9\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-076a210 elementor-widget elementor-widget-heading\" data-id=\"076a210\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">How do you work with graphic grammar?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c4046a2 elementor-widget elementor-widget-text-editor\" data-id=\"c4046a2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>A graphical grammar is a syntax that <a href=\"https:\/\/datascientest.com\/en\/google-data-studio-introduction-to-googles-dataviz-tool\">creates a visualization without specification and applies it to particular data.<\/a><\/p><p>For example, we&#8217;re going to work on a dataset of baby names in the USA:<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ebf1cc5 elementor-widget elementor-widget-shortcode\" data-id=\"ebf1cc5\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-shortcode\"><script src=\"https:\/\/gist.github.com\/sarahlunette\/16b90ff102c77ec78ea6d101b3862de9.js\"><\/script><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ef26f38 elementor-widget elementor-widget-text-editor\" data-id=\"ef26f38\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Here, alt is followed by the chart library, Chart, then by the declaration of the data used (DataFrame baby_names_final), the chart type, mark_chart, a simple bar chart, then by the declaration of the data, x being the names and y being the number of babies having been born with that name by selecting the year 1980.<\/p><p>The distribution of certain first names over the years :<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-87c6a70 elementor-widget elementor-widget-shortcode\" data-id=\"87c6a70\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-shortcode\"><script src=\"https:\/\/gist.github.com\/sarahlunette\/21c4b6ac098f8821b6db1e19bf937306.js\"><\/script><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e66f991 elementor-widget elementor-widget-image\" data-id=\"e66f991\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/04\/image2.png\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Vega Video Editor<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e9b8e31 elementor-widget elementor-widget-text-editor\" data-id=\"e9b8e31\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>On the right-hand side of the graph, there&#8217;s a three-dot button that allows you to save the graph directly in various forms. View Source and View Compiled Vega allow you to read JSON files for the graph and open them with Vega Editor, which links to a github.io console as shown below:<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5b90c2a elementor-widget elementor-widget-image\" data-id=\"5b90c2a\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/04\/image4.png\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c233dce elementor-widget elementor-widget-text-editor\" data-id=\"c233dce\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>In Altair, <strong>data operations<\/strong> can be performed directly on the chart. You can use functions like `transform_joinaggregate` and `transform_filter` to perform operations similar to pandas&#8217; groupby and filtering. Altair offers other functions as well:<\/p><p>&#8211; `transform_calculate()`: Used to calculate new values or metrics.<br \/>&#8211; `transform_density()`: Estimates a density distribution.<br \/>&#8211; `transform_window()`: Allows you to select a subset of the data.<br \/>&#8211; `mark_area()`: Represents a stacked area chart.<br \/>&#8211; `alt.FieldOneOfPredicate`: Specifies the choice of modes to use.<\/p><p>These functions provide powerful data manipulation capabilities when <a href=\"https:\/\/datascientest.com\/en\/data-journalism-shaping-the-future-of-news-reporting\">creating visualizations with Altair.<\/a><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a7cc587 elementor-widget elementor-widget-text-editor\" data-id=\"a7cc587\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>In the following example, you can create a boxplot that displays information when you hover over the boxes. This boxplot represents the distribution of the number of children with a specific name over the years (the Tooltip). When you hover over the boxplot, a dialog box opens with specific information about the name.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d8ff017 elementor-widget elementor-widget-shortcode\" data-id=\"d8ff017\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-shortcode\"><script src=\"https:\/\/gist.github.com\/sarahlunette\/efa0652dde5d6fb11d7216e1d354bbb0.js\"><\/script><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e486913 elementor-widget elementor-widget-image\" data-id=\"e486913\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/04\/image3.png\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Box plot video<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4db50ee elementor-widget elementor-widget-text-editor\" data-id=\"4db50ee\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Other features include<\/p><p>Sliders can be added<br \/>Display can be modified at three levels: encoding (encode), mark (mark_ followed by a type) and full display .configure_()<br \/>The use of geographic coordinates in GeoJSON<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bde18a2 elementor-widget elementor-widget-text-editor\" data-id=\"bde18a2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Alta\u00efr can also source its content from the Internet via URL links using alt.UrlData. Data must be in JSON and already processed. It is based on JavaScript libraries, d3j and Vega, which are often used for infographics in the Internet press.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ef2f10a e-flex e-con-boxed e-con\" data-id=\"ef2f10a\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f96038b elementor-widget elementor-widget-heading\" data-id=\"f96038b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Conclusion<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-98c80e6 elementor-widget elementor-widget-text-editor\" data-id=\"98c80e6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Alta\u00efr offers a declarative,<a href=\"https:\/\/datascientest.com\/en\/matplotlib-master-data-visualization-in-python\"> easy-to-use alternative to matplotlib or seaborn,<\/a> with an optimized graph framework and professional tools for visualizing statistical data, with better rendering and more intuitive grammar than traditional libraries. Visualizations are an essential element in information sharing for Data Analysts or Data Scientists within the company, during internal or customer presentations.<\/p><p>If you&#8217;d like to learn more about Data Science, click on the link to DataScientest, our training organization for the professions of tomorrow.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2738c08 elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"2738c08\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Discover our Data Science training courses<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a7d7d7d e-flex e-con-boxed e-con\" data-id=\"a7d7d7d\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-201d5c4 elementor-widget elementor-widget-html\" data-id=\"201d5c4\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [{\n    \"@type\": \"Question\",\n    \"name\": \"What is Altair?\",\n    \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"It's an open source declarative grammar library for statistical visualization called Alta\u00efr or V\u00e9ga-Alta\u00efr that reduces the amount of code you need to generate graphs that look more professional, have a more natural syntax and are graphically better presented and pixelated than Seaborn or Maplotlib with images of the order of 100,000 points. These two libraries are the best-known when it comes to visualization, with a wealth of documentation. You can read the articles our teammates have written by clicking on their names.\"\n    }\n  },{\n    \"@type\": \"Question\",\n    \"name\": \"How do we work with graphic grammar?\",\n    \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"A graphical grammar is a syntax that creates a visualization without specification and applies it to particular data.\"\n    }\n  }]\n}\n<\/script>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Altair is the brightest star in the Eagle constellation. But Altair is also a statistical visualization library that works with a visual grammar. Find out in this article how it&#8217;s used and why it&#8217;s so popular&#8230; What is Altair? Alta\u00efr is an open-source library for declarative statistical visualization grammar, known as Vega-Alta\u00efr. It simplifies the [&hellip;]<\/p>\n","protected":false},"author":67,"featured_media":175306,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"content-type":"","inline_featured_image":false},"categories":[2425],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.7 (Yoast SEO v21.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Alta\u00efr: everything you need to know about this statistical visualization library<\/title>\n<meta name=\"description\" content=\"Discover the power of Alta\u00efr, a versatile statistical visualization library. Learn how to create stunning visualizations and harness data insights with this in-depth guide.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/datascientest.com\/en\/altair-everything-you-need-to-know-about-this-statistical-visualization-library\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Alta\u00efr: everything you need to know about this statistical visualization library\" \/>\n<meta property=\"og:description\" content=\"Altair is the brightest star in the Eagle constellation. But Altair is also a statistical visualization library that works with a visual grammar. 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