The tag of a question should be useful to categorize the contents and support finding similar questions. Because all questions in this forum should concern MATLAB, the tag "matlab" is actually meaningless. I think this concerns "matlab code" also, although there are question, which do not concern "code", e.g. this one.
There is a high correlation between the "matlab" tag and a lack of information in the question, such that a meaningful answer is impossible or magic guesswork.
Do I miss the point of these tags? Is deleting the tags the best reaction?
Walter has asked last year, how to proceed, if the only tag created by the author is meaningless and there is not obviously better tag due to a lack of information in the question. Is "no_tag", "no_detail" or "unclear" useful then?
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I tend to replace "matlab_code" whenever I can with what I suppose could lead to an answer.
Sometimes the lack of info is such that it becomes "doit4me" instead of "unclear" or similar.
To me it's obvious that if the OP doesn't put a minimum effort in explaining what her problem is, then all she wants is an asnwer from the magical sphere and I feel that this behaviour should be signalled.
"matlab" as a tag is too common to be useful, and I have seen it applied in cases it is not appropriate, such as Simulink questions.
"matlab code" in my experience is sometimes used by people requesting information about MATLAB syntax, but far far more often is used by people asking for someone to write their program for them. I seldom find it to be a useful tag. When it first started appearing, I would delete or adjust it, but doing that become too much work.
Both of these tags, "matlab" and "matlab code", are used too often by far for me to have the time or energy to adjust them.
I could see the "matlab" tag being useful when you only want MATLAB solutions and not ones that require you to do something at the command line (or use the system function). I can think of a number of solutions where command line tools like find and sed can make things easier, but might not be the desired solution.
Sometimes I start a deleting session and remove several dozens of these tags. Without a "Simulink" tag, the "Matlab" tag is meaningless in nearly all cases. So would an automatic rejection of these tags have any drawbacks?