Vizney: Visualization Journey in the Data World

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Formatting Axis and Tooltip Independently in Tableau

Formatting Axis and Tooltip Independently in Tableau

When building charts in Tableau, you often want the axis labels to display abbreviated numbers (e.g., 10K, 20M) while the tooltip shows precise values (e.g., 10,245). However, even if you set different number formats for the Axis and the Pane, the tooltip natively inherits the axis formatting

Improving Data Visibility with Emoji Number Formats in Tableau

Improving Data Visibility with Emoji Number Formats in Tableau

When building dashboards, displaying categorical data like 'Achieved/Failed' or general statuses purely as text can lack visual impact. While using Shape marks is a common workaround to add visual cues, it can be cumbersome when you simply want to add a quick highlight directly within a Text

How to Fix the 'Error Code: 6EA18A9E' Error in Tableau

Troubleshooting

How to Fix the 'Error Code: 6EA18A9E' Error in Tableau

When building a view or using specific features in Tableau Desktop, you may encounter an internal error message that interrupts your work: Unable to complete action Internal Error - An unexpected error occurred and the operation could not be completed. Error Code: 6EA18A9E The exact cause of this error code

How to Fix the 'An error occurred' Error When Using Tableau Agent

Troubleshooting

How to Fix the 'An error occurred' Error When Using Tableau Agent

When configuring the OpenAI API for Tableau Agent in Tableau Server (version 2025.3 or later), the connection test in the settings may show as 'Success', but the following error message might appear when attempting to use the feature in web authoring: An error occurred. Please try again.

How to Create Bump Chart in Tableau

How to Create Bump Chart in Tableau

Bump Chart is an intuitive visualization method that displays changes in ranking over time. It is highly effective for understanding relative ranking competition and trends between categories, rather than changes in absolute values. When creating a bump chart in Tableau, keep these core principles in mind: * Apply Rank Calculation Since

Regional Extinction Risk Map of South Korea (2025)

Regional Extinction Risk Map of South Korea (2025)

This map visualizes the local extinction risk index by administrative division (si/gun/gu) in South Korea as of 2025. By categorizing the level of extinction risk for each region by color, it provides an at-a-glance view of the geographical distribution of the population decline and regional extinction crisis currently

How to Hide Duplicate Subtotals for Single Sub-Items in Tableau

How to Hide Duplicate Subtotals for Single Sub-Items in Tableau

When adding subtotals to a table with two dimensions on the Rows shelf, Tableau duplicates the row if the second dimension has only one sub-item. This quick guide explains how to use a table calculation to hide these redundant rows and leave only a clean subtotal. 1. Create a Calculated

How to Name Calculated Fields and Parameters Like a Pro

How to Name Calculated Fields and Parameters Like a Pro

Following our guide on naming dashboard chart titles, let's look at another crucial factor that affects efficiency for dashboard creators: naming calculated fields and parameters. Unlike default fields in a data source, custom calculations and parameters require clear naming conventions. Establishing these rules from the start drastically reduces

Tableau License Decision Guide

Tableau License Decision Guide

Successfully adopting Tableau requires configuring the optimal license structure tailored to your organization's data infrastructure and utilization goals. Beyond simply purchasing licenses based on the expected number of users, you must comprehensively consider where to store the data (Hosting), what level of security and management features are needed

How to Fix the 'HTTP Bad Request' Error When Publishing to Tableau Server

Troubleshooting

How to Fix the 'HTTP Bad Request' Error When Publishing to Tableau Server

When publishing a workbook created in Tableau Desktop to Tableau Server or Tableau Cloud, you may encounter the following error message, and the publishing process will stop. Unexpected Error An error occurred while publishing the workbook. Error Code: 0505B44A HTTP bad request This error primarily occurs when the 'Project

How to Name Dashboard Charts Like a Pro

How to Name Dashboard Charts Like a Pro

When building a dashboard or creating charts, we often spend an unnecessary amount of time figuring out what to name our sheets rather than focusing on the actual data visualization. To save you from this hassle, we have put together a straightforward, standardized naming guide. The Perfect Basic Formula The

How to Fix Data Blending Error with Logical Tables in Tableau

Troubleshooting

How to Fix Data Blending Error with Logical Tables in Tableau

"Data sources that contain logical tables cannot be used as secondary data sources for data blending." This error occurs because Tableau's newer data model, Relationships (logical layer), conflicts with the older method of combining data known as Data Blending. In a data blend, the secondary data

How to Create Jitter Plot in Tableau

How to Create Jitter Plot in Tableau

When visualizing a large number of individual data points on a single axis in Tableau, "overplotting" commonly occurs, where data points with the same values overlap and cluster together. When points overlap in a straight line and look like a thick column, it is difficult to identify the

What is Scrollytelling?

What is Scrollytelling?

In the world of data visualization, going beyond simply displaying data to delivering a clear message and immersing the reader is a significant challenge. Today, let’s talk about one of the most effective data storytelling techniques: Scrollytelling. Defining Scrollytelling Scrollytelling is a portmanteau of 'Scroll' and '

Miracle in a Box

Challenge Featured

Miracle in a Box

Climate change is a daily reality for millions of smallholder farmers in India. This visualization tells the story of how Kheyti is transforming lives with a simple "Greenhouse-in-a-Box." Challenge Kheyti | Data ChangemakersA decade of growth, visualizedData Changemakers Related Concepts What is Scrollytelling?In the world of data visualization,

The Most Valuable Brand Shuffle (2022–2026)

Based on the 'Global 500 2026' report published by Brand Finance, we visualized the ranking evolution of the world's top 10 most valuable brands over the past 5 years (2022–2026). 1. Apple Maintains Top Spot Apple has consistently maintained the No. 1 position in brand

Improving the Readability of Overlapping Line Charts in Tableau

Improving the Readability of Overlapping Line Charts in Tableau

When creating multiple line charts, lines often converge or overlap in certain areas, making it difficult to read individual data values. By default, hovering over a line only reveals the value for that single item. This means users have to frustratingly navigate their mouse through narrow gaps just to compare

The World's Richest 2026: The Gap at the Top

The World's Richest 2026: The Gap at the Top

We visualized the top 10 billionaires based on Forbes' Real-Time Billionaires List as of February 3, 2026. Elon Musk stands in a league of his own. With a net worth exceeding $768 billion, he has created a massive gap between himself and the runner-up, Larry Page, effectively doubling the

Tableau Prep Guide

Tableau Prep Guide

In data analysis projects, it is often said that Data Preparation accounts for 80% of the total time spent. While transforming raw data into an analysis-ready format is essential, it is also a repetitive and time-consuming task. In this post, we will introduce Tableau Prep, a tool that revolutionizes the

Boy or Girl? Visualizing Global Child Gender Preferences (2024)

Boy or Girl? Visualizing Global Child Gender Preferences (2024)

We visualized data from the Gallup International End of Year Survey 2024, which polled approximately 45,000 people across 44 countries. The survey posed a simple yet revealing question: "Suppose you could have only one child. Would you prefer that it be a boy or a girl, or is

Tableau Server Guide: Architecture & Core Process

Tableau Server Guide: Architecture & Core Process

When operating Tableau Server, you may encounter various technical issues, such as slow dashboard loading speeds or extract refresh failures on specific nodes. To resolve these problems based on logic rather than intuition, it is essential to accurately understand how Tableau Server works internally—specifically, its Architecture. In this post,

The Top 10% of Users Produce 73% of All Comments

The Top 10% of Users Produce 73% of All Comments

Naver news comment activity is far more concentrated than it appears. According to a 2020 SBS analysis, the top 10% of users produced 73% of all comments, and the top 1% accounted for 25%. Most users contributed very little, resulting in a structure where a small group drives the majority

Using Treemap Chart in Tableau

Using Treemap Chart in Tableau

Treemap chart is a highly efficient way to display data within a limited space. By leveraging the size and color of each rectangle, it communicates both proportion and pattern at once, while clearly visualizing hierarchical relationships within the data. In this post, we’ll explore how to use treemap charts

How to Add Pagination in Tableau

How to Add Pagination in Tableau

When a dashboard contains too many items to display at once, showing all the data on a single screen can be visually overwhelming and make exploration difficult. In such cases, applying a pagination approach allows you to divide the data across multiple views for a cleaner and more organized presentation.

Smartphone Launch Trend Analysis

Smartphone Launch Trend Analysis

In the smartphone market, even within the same brand, models with different prices and features are released throughout the year. Because each brand targets different customer segments, launch timing and price positioning often follow a recognizable pattern. The goal of this dashboard was to help identify those patterns at a