Assigning names to values in vector
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I would like to keep track on my vectors and need to assign a name to each entry.
For example: xN=[2 1]=[x1 x2], or something like it.
Is it possible to assign the values a handle of some sort? I'm switch the values around, and I don't know beforehand were the going to end up.
So the name should not interfere with the algebraic operations
2 Comments
Steven Lord
on 4 Nov 2019
I assume this is only one step in a larger project. If you describe that larger project (why are you "switch [sic] the values around"?) we may be able to offer an alternative way to solve the problem, either by doing this tracking or avoiding the need to track.
Answers (1)
Walter Roberson
on 3 Nov 2019
No, it is not possible to assign a handle to a value. Use symbolic variable names and subs() as needed. For example,
x = sym('x', [1 5]);
y = sum(x.^(0:4));
xvals = randi([-9 9], 1, 4);
subs(y, x, xvals)
xvals2 = xvals(randperm(length(xvals)));
subs(y, x, xvals2)
3 Comments
Walter Roberson
on 4 Nov 2019
Of course there are ways. I already linked you to an explanation of why most of those ways are not good mechanisms to use.
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