Readability of text using all upper case letters
I was told somewhere along the way that it is easier for most people to read mixed case words as opposed to words in all upper case. Most maps that I look at use all upper case for street names. Could it be that mixed case is easier to read when it is in a sentence or paragraph like a serif font and that all upper case works fine for individual words on a map?
Thank you for your help.
Mapping Center Answer:
What you were told is generally correct, though typeface selection and character spacing make a big difference as well.
One of the reasons you see a lot of uppercase street labels is because the data are old. Back ~15-20 years ago many databases still did not differentiate case for text. To help with that we created a set of tools to covert the uppercase text to proper case (not as simple for geographic data or abbreviations as the Proper() methods in many programming languages). These are at:
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