How to put any variable name automatically?

2016 8 7
1 个回答
回答已采纳
更新时间：2016 8 8
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0 个投票

In this program,
a = 1 ;
b=2;
c = zeros(20,1);
d= zeros(20,1);
for k = 1:20
c(k) = (b+k)^2 + (a+k)^3;
d(k) = (b+k)^2 - (a+k)^3;
end
[maxobjective, iteration1] = max((c));
but i want to pre define objective function, means
[maxobjective, iteration1] = max((c)); or
[maxobjective, iteration1] = max((d));
put automatically like below.
objfun = c; %or d
a = 1 ;
b=2;
c = zeros(20,1);
d= zeros(20,1);
for k = 1:20
c(k) = (b+k)^2 + (a+k)^3;
d(k) = (b+k)^2 - (a+k)^3;
end
[maxobjective, iteration1] = max((objfun));

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 采纳的回答

Walter Roberson
Walter Roberson 2016-8-7

0 个投票

Use the same variable for both, but make it a cell array. And make objfun the index of the cell to use.

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Triveni
Triveni 2016-8-8
Ya, done.
objfun = 1; %or 2
a = 1 ;
b=2;
c = zeros(20,1);
d= zeros(20,1);
for k = 1:20
c(k) = (b+k)^2 + (a+k)^3;
d(k) = (b+k)^2 - (a+k)^3;
end
if objfun == 1
[maxobjective, iteration1] = max((c));
end
if objfun == 2
[maxobjective, iteration1] = max((d));
end
Walter Roberson
Walter Roberson 2016-8-8
objfun = 1; %or 2
a = 1 ;
b=2;
c_d{1} = zeros(20,1);
c_d{2} = zeros(20,1);
for k = 1:20
c_d{1}(k) = (b+k)^2 + (a+k)^3;
c_d{2}(k) = (b+k)^2 - (a+k)^3;
end
[maxobjective, iteration1] = max(c_d{objfun});

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