ERROR: Undefined function 'sum' for input arguments of type 'cell'. Kindly help me resolve the error.

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Swathi S
Swathi S 2019-4-30
编辑： madhan ravi 2019-4-30
ERROR:
Undefined function 'sum' for input arguments of type 'cell'.
Error in PSCCandPSSCoptiWdVss (line 45)
p=sum(arrayfun(@(x) x*wdwd, 1:2*N, 'un', 0));
CODE:
clear all;
close all;
d=1;
f=9*10^6;
w=2*pi*f;
u=4*pi*(10^-7);
N=15
%ro=1.72*(10^-8); %copper
ro=0.0005 % Resistance
dout=0.15
t=0.000035
wd=[0.005 0.006 0.007 0.008]
s=[0.006 0.007 0.008 0.009]
%Saad Mutasgar
[wdwd,ss]=meshgrid(wd,s);
C1=1
C2=2.46
C3=0
C4=0.2
din=dout-(2*N*wdwd)-((2*N-2)*ss)
rout=dout/2
rin=din/2
U=2;
phi=(dout-din)/(dout+din)
davg=0.5*(dout+din)
L0=((C1.*u.*N.*N.*davg)./2).*(log(C2./phi)+(C3.*phi)+(C4.*phi.*phi))
M_cir=((u.*N.*(dout.^2).*N.*(dout.^2).*pi)./(2.*sqrt(((dout.^2)+(d.^2)).^3)))
syms x
p=sum(arrayfun(@(x) x*wdwd, 1:2*N, 'un', 0));
q=sum(arrayfun(@(x) x*ss, 1:((2*N)-1)))

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采纳的回答

KSSV
KSSV 2019-4-30
编辑：KSSV 2019-4-30
Use
p = cellfun(@sum,arrayfun(@(x) x*wdwd, 1:2*N, 'un', 0),'un',0) ;
instead:
p=sum(arrayfun(@(x) x*wdwd, 1:2*N, 'un', 0));
As the output is cell...you need to use cellfun like arrayfun.
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更多回答（1 个）

madhan ravi
madhan ravi 2019-4-30
% remove syms x
p = sum(cell2mat(arrayfun(...))) % same goes for q
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madhan ravi
madhan ravi 2019-4-30
编辑：madhan ravi 2019-4-30
Well, it’s pretty obvious, your trying to add 120 elements with 116 elements, so it’s your call now.
bsxfun(@plus,p(:),q)
Also I believe I have answered the question you originally asked. I suggest you to do MATLAB on-ramp course to cover the fundamental basics of MATLAB.

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