dot indexing in a function handle

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Geovane Gomes 2023-3-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1926200-dot-indexing-in-a-function-handle

评论： Rik 2023-3-10

采纳的回答： Rik

在 MATLAB Online 中打开

Hi all,

Is it possible to use dot indexing in a function handle? Or at least ignore an output?

Please look at the code below.

clear
clc
close
format shortG
P = 100;
vel = 1.5066e+03;
omegab = 0;
L = 30480;
E = 200000;
I = 1.6253e6;
b = 2438;
h = 20;
A = b * h;
rho = 7.8E-9;
jmax = 5;
varMean = [P vel];
varStd = abs([0.15 0.15] .* varMean);
varDist = ["normal","normal"];
g = @(X) 1.76 - beamUnderMovingLoad(X(1),X(2),L,E,I,omegab,rho,A,jmax);
inputs = struct('means', varMean, 'stds', varStd, 'dists', varDist, 'g_func', g, 'N', 10000);
output = monteCarloSimulation(inputs)
output.Pf
output.Beta

It runs properly when the function 'beamUnderMovingLoad()' has only one output, but Id like to select the output in the 'g' function.

Trust all clear!

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采纳的回答

Rik 2023-3-10

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1926200-dot-indexing-in-a-function-handle#answer_1189910

编辑：Rik 2023-3-10

在 MATLAB Online 中打开

You will have to write a wrapper that can select an output for you. There is no built-in functionality to do so.

Some like this should work:

function out=output_selector(fun,k,varargin)
% Select the k-th output variable given some input.
% The first input should be a function handle. Any inputs required for the
% function can provided as extra arguments.
out = cell(1,k);
[out{:}]=fun(varargin{:});
out = out{end};
end