Data-driven decision on an example of a choice of color for painting walls

Data-driven decision on an example of a choice of color for painting wallsStarting to choose a color for painting the walls in the room, I came across an interesting thing. The entire process from the very beginning began to resemble work on some IT-ML-Blah-blah-blah-analytical project.
 
 
There is also a customer who does not really understand what exactly he wants, but he wants everything to be good and he liked it. There are still several interested parties on the part of the customer who can not agree on what is "good". There are some re-statements of the problem, which, under a big question, are relevant to this very "good", but at least somehow solvable. There ...
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Descriptor graphics in MATLAB: second horizontal axis

When studying the descriptor graphics in MATLAB, there was a shortage of "userfriends" of the functional, namely the absence of a standard command allowing to add an additional horizontal axis.
 
 
Adding an additional vertical axis, using the command. plotyy provided and in help to it, in the topics section, there is an example of adding an additional axis x , but this example, like the team itself, is not without flaws, which the developer himself graciously tells us:
plotyy is not recommended
the description of the command axes ;
 
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