Given a ColorSpec string, either in short or long form, return the corresponding RGB triplet. If the input is not a valid color, return an empty vector.
str2rgb('red') returns [1 0 0]
str2rgb('k') returns [0 0 0]
str2rgb('pizza') returns 
When I see beautiful and efficient Ly Cao solutions, I have the feeling that Cody has found another master (after Alfonso).
Thank you. I'm flattered. I still have a lot to learn.
Word Counting and Indexing
Renaming a field in a structure array
Create a cell array out of a struct
Program an exclusive OR operation with logical operators
Triangular matrices in 3D array
Numeric array to cell array of strings (easy)
Concatenate string with cell array of strings
Get factory-defined property values
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