Here is an interesting chart from Economist, ironically titled The weight of the world. Can you tell what is wrong with it?

That’s right. The coloring of dots is unnecessary. The color scale dots add an extra layer of complexity to the chart. They are redundant.
So there you go. A simple but effective rule. Don’t add redundant colors or extra layers to your chart. Your users are smart, so let them decode the chart.
Make awesome charts every time…
Check out these additional charting principles and case studies to make awesome charts.














8 Responses to “What is LAMBDA? 4 Practical examples to REALLY understand it”
Thanks so much for this, it's utterly brilliant!
Silly question - I assume LAMDA will work with dynamic arrays?
Very much so. Many of the new functions like MAP only make sense in the context of dynamic arrays and Lambda functions.
As usual, very informative material. Easy to understand and apply!
Thanks for making everyone awesome!
Easy to understand Lambda function through this tutorial. Thanks Chandoo.
I have Officce 365 (updated), but I can't see LAMBDA function. 🙁
I dont see "Office Insider" option in my excel 365.
Another option for First Monday...
=LAMBDA(anydate,WORKDAY.INTL(EOMONTH(anydate,-1),1,"0111111"))
Loving the binary options in WORKDAY.INTL David...