Why do we usually use M,N,P to indicate dimensions?
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taken to indicate the dimension of the array m, n, p. the meaning of these letters I guess that m - main n -??? p - page?
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Paulo Silva
am 28 Jul. 2011
They are just variables when used like this:
[m,n,p] = size(rand(2,3,4))
m holds the first dimension (the number of rows)
n holds the second dimension (the number of columns)
p holds the third dimension of the array, think about it like the number of pages
4 Kommentare
Paulo Silva
am 28 Jul. 2011
just variables, no particular meaning, use the variables you like the most
Walter Roberson
am 28 Jul. 2011
Historical habit in mathematics, just like using the beginning of the alphabet to represent constants and using the end of the alphabet to represent variables.
karthika
am 28 Jul. 2011
m and p gives the number of rows and columns
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Walter Roberson
am 28 Jul. 2011
No. The programming language doesn't care which variable name you use, but you will lose efficiency from people reading your code and attempting to figure out what your names mean. If you are going to use non-traditional names, use names that are self-explanatory.
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