In this post, I share my collection of data and calculations on home prices across the USA, quantify the affordability in each state (and DC) considering each region’s income, down payment, loan cost, mortgage payments, minimum salary requirements to continue to afford the home, and from there calculations on affordability gap, affordability index, home price:income […]
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Gini Coefficient and how to calculate it
The Gini Coefficient is a way to measure the income distribution of a population. The value for the Gini coefficient ranges from 0 to 1 where higher values represent greater income inequality and where: 0 represents perfect income equality (everyone has the same income) and 1 represents perfect income inequality (one individual has all the […]
Reshaping data for Excel via Python
In this post, I demonstrate an effective way to reshape a CSV or XLSX file that originally has multiple rows repeating for each column. For example, many raw data exports will include a country’s metrics (GDP for example) for the year in each row and it repeats for different years as rows. Cntry Year GDP […]
Charting Team Lineups & Formations (Excel)
We have all seen the team lineups and formations graphics on TV for soccer (European football) games. It got me wondering if I could create a chart instead of a static image that can be easily scaled for any teams, any formations just by updating the underlying tables. It turns out, I can. It takes […]
Conditional Formatting Presentation (Excel)
Microsoft Quarterly Report was publicly released on April 25, 2024. It has tabulated data on year over year percent change in revenues by Microsoft fiscal quarter (Q1 is from July 1 through September 30). I tabulated the data from fiscal year 2023 Q1 through Q4, and from fiscal year 2024 Q1 through Q3 (Q4 data […]
Dumbbell Chart (Excel)
Dumbbell chart, aka Connected Dot plot is a type of chart that’s suitable for visually comparing values especially between two periods or showcase change. In this post, I demonstrate its usefulness as well some key steps on how to create one in Microsoft Excel (Office 365). Let’s start with the data. I have some data […]
Butterfly Chart (Excel)
Butterfly chart (aka Tornado or Divergent chart) is a type of bar chart used to compare two data sets side by side.It plots the data as two horizontal bars with the same X-axis in the center, resembling the butterfly wings.It gives a quick glance at the difference between two groups with the same parameters. It’s […]
An interactive musical keyboard player (Python)
In this post, I am sharing my Python code for creating a simple musical keyboard player that can be played using a standard computer keyboard. The app will generate specific musical notes as you press keys A-Z on your keyboard. You can increase a note by half-step or full-step by each press. So, increasing by […]
Find Superscripts, Subscripts, and Unicode in a text file (Python)
Occasionally, it becomes necessary to search for special characters like superscripts, subscripts, symbols, emojis, or any Unicode characters within a text document. This is crucial when working with data files that should not contain any such characters, unless they are explicitly required and managed. Most editors, including Word, lack a ‘Find’ feature that reveals all […]
How to make a perfect birthday cake in Excel
I’ve been exploring whether it’s possible to create a birthday cake-style chart in Excel. After some adjustments, I’ve reached a point where I can confidently say it’s achievable! You may ask, why not simply download an image from the internet? Well, that’s less engaging, potentially unlawful, and above all, it lacks the customization and scalability […]