我在MATLAB中编写了一个函数，但它不会返回我的输出。它将第一个输出返回为ans = a#但就是这样。我认为function[argout1,argout2,...argoutn=funcname(in1,in2,...inn)以argout1= a #，argout2= a #等格式返回所有输出。

我意识到我可以使用disp()或其他一些内置函数，但是当你有一个函数文件时，所有这一切都意味着什么。该函数正在访问Excel电子表格中的输入，但我认为这不应该有所作为。任何帮助将不胜感激。

代码如下。

function[y_int1, y_int2, Youngs_Modulus, Poissons_Ratio, Youngs_Modulus_Percent_diff, Poissons_Ratio_Percent_diff, RMS1, RMS2]= Lab3_EC(elong1,elong2,elat1,elat2,thick,width,load,N)

%average longitudinal strain

avgLongs=((elong1)+(elong2))/2;

%average lateral strain

avgLats=((elat1)+(elat2))/2;

%Find's the area of the sample

A=thick*width;

%Finds the applied stress

stress=load./A;

%declares a variable x1 for Long Strain

x1=avgLongs;

%declares a variable y1 for Applied Stress

y1=stress;

%Declares variables to compute slope1

x1bar=mean(x1);

y1bar=mean(y1);

sxy1=sum(x1.*y1);

sx1=sum(x1);

sy1=sum(y1);

sx1s=sum(x1.*x1);

sx11s=(sum(x1))^2;

slope1=(N*sxy1-sx1*sy1)/(N*sx1s-sx11s);

y_int1=y1bar-slope1*x1bar;

%x points

xp=linspace(min(x1),max(x1));

% y points

yp1=slope1*xp+y_int1;

%Declares variables to compute slope 2

%Since our second calculation of linear regression uses Average

%Longitudinal Stress we can re-use the variable x1

y2=abs(avgLats);

y2bar=mean(y2);

sxy2=sum(x1.*y2);

sy2=sum(y2);

slope2=(N*sxy2-sx1*sy2)/(N*sx1s-sx11s);

y_int2=y2bar-slope2*x1bar;

%y points

yp2=slope2*xp+y_int2;

%preallocate space for error1 vector

Error1=zeros(N,1);

%compute error1

for i=1:N;

Error1(i)= (stress(i)-y_int1-slope1*avgLongs(i))^2;

end

Error1=sum(Error1(5));

%preallocate space for error2 vector

Error2=zeros(N,1);

for i=1:N;

Error2(i)=(abs(avgLats(i))-y_int2-slope2*avgLongs(i))^2;

end

Error2=sum(Error2(5));

RMS1=sqrt(Error1/N);

RMS2=sqrt(Error2/N);

Lab_2_E=(stress(5)-stress(1))/(avgLongs(5)-avgLongs(1));

Lab_2_v=(abs(avgLats(5)-avgLats(1))/(avgLongs(5)-avgLongs(1)));

Youngs_Modulus=slope1;

Poissons_Ratio=slope2;

Youngs_Modulus_Percent_diff=((abs(Youngs_Modulus-Lab_2_E))/Lab_2_E)*100;

Poissons_Ratio_Percent_diff=((abs(Poissons_Ratio-Lab_2_v))/Lab_2_v)*100;

%Plot stress strain diagram and poisson's ratio

figure(1), plot(avgLongs,stress,'k',x1,y1,'o',xp,yp1,':g'),hold on,...

xlabel('Long Strain(in/in)'),ylabel('Stress(psi)'),...

title('Stress vs. Long Strain'), legend('Exp','data points','Calc',...

'Location','SouthEast')

figure(2),plot(avgLongs,abs(avgLats),x1,y2,'+',xp,yp2,'-- m'),hold on,...

xlabel('Long Strain(in/in)'),ylabel('Lat Strain(in/in)'),...

title('Poisson''s Ratio'),legend('Exp','data points','Calc',...

'Location','SouthEast')