FUN must be a function, a valid character vector expression, or an inline function object. | fzero
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function T = FA(y)
for i = 1:length(y)
if y(i) >= 12.5
N1(i)= 0
N2(i)= 8
N3(i)= 9
N4(i)=3.76*y(i)
N5(i)= y(i)-12.5
else
N1(i)= 2*(12.5 -y(i))
N2(i)= 2*(y(i) - 8.5)
N3(i)= 0
N4(i)=3.76*y(i)
N5(i)= 0
end
f{i}=@(T)-5078905.27 + N1(i)*(297334.224)+ N1(i)*((299180+37.85*(T)+(-4571.9)*log(T))-294170.430054)+N2(i)*((56835+66.27*(T)+(-11634)*log(T))-24557.403501)+N3(i)*((88923+49.36*(T)+(-7940.8)*log(T))-69574.657860)+N4(i)*((31317+37.46*(T)+(-4559.3)*log(T))-26135.539906)+N5(i)*((43388+42.27*(T)+(-6635.4)*log(T))-27886.197583)
fzero(f,2500)
end
I know that if I change f{i} to f(i) I'll be able to run the script and input whatever values I want. However, I need this script tor work in conjuction with this one
clc; clear; close all;
r = .7:.1:2.0;
y = 12.5*r
T = FA2(y);
I eventually want to plot the r values vs. the T values (fzero outputs). If I change f{i} to f(i) I get a different error code on the second script, "Nonscalar arrays of function handles are not allowed; use cell arrays instead."
What do I need to do to make these work together? Thank you
1 个评论
Stephen23
2018-10-16
"I know that if I change f{i} to f(i) I'll be able to run the script and input whatever values I want."
No, actually you will get an error (because function handles cannot be put into an array).
回答（1 个）
You don't need to store the functions in any array, you only need to store the output values:
function out = FA(y)
out = nan(size(y));
for k = 1:numel(y)
...
fun = @(T)...;
out(k) = fzero(fun,2500);
end
end
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2018-10-16
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