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PBCharts Inflation Analysis
Last week we released the PBCharts (Process Behavior Charts) tool for performing SPC control chart analysis. I’ve been working on PBCharts for well over a year, and we had an extended beta testing...
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Unlink Chart Data
There are occasions when you may want to break the link between a chart and its underlying data. Maybe you copied the chart from another workbook, and you no longer have access to that workbook. Maybe...
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Trendlines and Chart Types in Excel
tldr; Stick to XY Scatter charts if you need trendlines for your data. Line charts may misrepresent the relationships in your data. Trendlines and Chart Types A user had problems with my Trendline...
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LAMBDA Function to Build Three-Tier Year-Quarter-Month Category Axis Labels
A certain data layout can produce a chart axis which divides and subdivides the categories into logical subcategories, such as years, quarters, and months in the following chart. Generally, this data...
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Excel Lambda Moving Average
Moving Averages When averaging time-series data, you often want to smooth out peaks and valleys. A moving average is an easy way to smooth your data. When I track my weight, for example, I use a 7-day...
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Improved Excel Lambda Moving Average
I recently wrote about how I wrote an Excel Lambda Moving Average formula. I started with internet searches, which led to formulas which didn’t work or formulas which were too complicated for me to...
View ArticleIndex of Peltier Tech Blog
Main Topics Cornerstone Articles (Important and Popular Posts) Axis Labels Axis Scales Chart Events Combination Charts Conditional Formatting of Charts Custom Chart Types Data Labels Dynamic Arrays,...
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Lambda Moving Average Formulas
In two recent articles, Excel Lambda Moving Average and Improved Excel Lambda Moving Average, I described my efforts to build a Lambda moving average formula that worked the way I wanted it to. I’ve...
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ISPRIME Lambda Function
Prime Numbers (and AI) Using ChatGPT and other AI tools to write Excel formulas has become popular. Bill Jelen aka Mr Excel has a simple test to see whether the particular AI engine is reliable: ask...
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Unblocking and Enabling Macros
When Windows detects that a file has come from a computer other than the one you’re using, it marks the file as coming from the web, and blocks the file. This includes files emailed to you and files...
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