Not enough input arguments - something simple i'm sure

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I'm getting the above error when trying to execute this code,
close all
clear all
m = 0.05; %mass of cone and coil together (Kg)
k = 1000; %stiffness (N/m)
R = 1; %damping (Ns/m
F = 1; %Force amplitude (N)
t = 0.01; %Time of the snapshot
f = linspace(0,99,10000); %frequency (Hz)
Zm = abs(R + 1i.*(m*2*pi.*f-k./(2*pi.*f))); %mechanical impedance
Xm = m*2*pi.*f - k./2*pi.*f; %mechanical reactance
th = atan*(Xm/R); %phase angle
us = F.*cos(2*pi*f*t-th); %velocity response
What are arguments anyway? (apart from the obvious)
  1 个评论
Matt Fig
Matt Fig 2012-11-2
I'm getting the above error when trying to execute this code,
close all clear all m = 0.05; %mass of cone and coil together (Kg) k = 1000; %stiffness (N/m) R = 1; %damping (Ns/m F = 1; %Force amplitude (N) t = 0.01; %Time of the snapshot f = linspace(0,99,10000); %frequency (Hz) Zm = abs(R + 1i.*(m*2*pi.*f-k./(2*pi.*f))); %mechanical impedance Xm = m*2*pi.*f - k./2*pi.*f; %mechanical reactance th = atan*(Xm/R); %phase angle us = F.*cos(2*pi*f*t-th); %velocity response
What are arguments anyway? (apart from the obvious)

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采纳的回答

Walter Roberson
Walter Roberson 2012-1-27
atan*(Xm/R) should be atan(Xm/R)
The expression as written is the same as
atan() * (Xm/R)
which is calling atan with no arguments (parameters)

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