Why this program keep saying Error using plotting>getC Too many output arguments. Error in plotting (line 9) res(i)=getC(1,0,100);? The getC returns c, which is only one output(a number),where're the 'too many' outputs?

2017 8 7
2 个回答
更新时间：2017 8 7
8 次查看（30 天）

0 个投票

Here's my scripts,I'm new to Matlab and really couldn't figure out how to fix this problem...
function plotting
clc
close all
x = linspace(1,2,2);
res=zeros(1,length(x));
for i=1:length(x)
xpt=x(i);
res(i)=getC(1,0,100);
%res(i)=getC;
end
plot(x,res)
function getC(x,t,n)
c=0;
for k=1:1:n
c=c+(4*(-1).^k)/((2*k+1)*pi)*cos(((2*k+1)*pi)*x/2)*exp(((-(2*k+1)*pi)/2).^2*t);
end
getC = c;

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回答（2 个）

Haosong Liu
Haosong Liu 2017-8-7

0 个投票

if true
function plotting
clc close all
x = linspace(1,2,2);
res=zeros(1,length(x));
for i=1:length(x)
xpt=x(i);
res(i)=getC(1,0,100);
%res(i)=getC; end plot(x,res)
if true
function getC(x,t,n)
c=0;
for k=1:1:n
c=c+(4*(-1).^k)/((2*k+1)*pi)*cos(((2*k+1)*pi)*x/2)*exp(((-(2*k+1)*pi)/2).^2*t);
end
getC = c;
end
Walter Roberson
Walter Roberson 2017-8-7

0 个投票

Change
function getC(x,t,n)
c=0;
for k=1:1:n
c=c+(4*(-1).^k)/((2*k+1)*pi)*cos(((2*k+1)*pi)*x/2)*exp(((-(2*k+1)*pi)/2).^2*t);
end
getC = c;
to
function c = getC(x,t,n)
c=0;
for k=1:1:n
c=c+(4*(-1).^k)/((2*k+1)*pi)*cos(((2*k+1)*pi)*x/2)*exp(((-(2*k+1)*pi)/2).^2*t);
end

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