What does ~ signify in: function [x, f, g] = defineSystem(~, params)

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Pallov Anand
Pallov Anand 2022-11-16
评论： Pallov Anand 2022-11-17
function [x, f, g] = defineSystem(~, params)
syms p v z % states
x = [p; v; z];
f0 = params.f0;
f1 = params.f1;
f2 = params.f2;
v0 = params.v0;
m = params.m;
Fr = f0 + f1 * v + f2 * v^2;
% Dynamics
f = [v; -Fr/m; v0-v];
g = [0; 1/m; 0];
end

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采纳的回答

Torsten
Torsten 2022-11-16
It signifies that the function "defineSystem" is usually called with two inputs, but that the first input can be ignored in the actual case because it is not needed to calculate the output variables x, f and g.

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