an assignment A(I) = B, the number of elements in B and I must be the same?

clc
clear all
close
%B =(kg/cm2)  % totally vertical over pressure

%Input File Input Regression(depth,rd,Vs).txt
file1='CobaReg.txt'
fid=fopen(file1, 'r');
Reg01=fscanf(fid,'%g %g %g', [3,Inf])';

rd   =Reg01(:,1);            % epicentre distance
depth=Reg01(:,2);            % moment magnitude
Vs   =Reg01(:,3);            % peak ground surface acceleration

%Input PDF_Repi_Mw_amax_PGA.txt 
file2='CobaEarthq.txt'
fid=fopen(file2, 'r');
Eq01=fscanf(fid,'%g %g %g', [3,Inf])';

Repi=Eq01(:,1);            % epicentre distance
Mw  =Eq01(:,2);            % moment magnitude
amax=Eq01(:,3);            % peak ground surface acceleration

%Input PDF_Repi_Mw_amax_PGA.txt 
file3='SigReg.txt'
fid=fopen(file3, 'r');
Sig01=fscanf(fid,'%g %g', [2,Inf])';

SigmaR=Sig01(:,1);         %shear stress from Laboratorium
SigmaD=Sig01(:,2);         %shear stress from Earthquake

%X=[depth Vs Repi Mw amax];

% Regression rd
for i =1:length(depth)

      %b = mvregress(X,rd)
      X=[ones(size(depth)) depth Vs Repi Mw amax]

      R=regress(SigmaR,X)

      D=regress(SigmaD,X)

      %stepwise(X,rd);

end

cftool

%Calculation SigmaD based on regression:
SigD=[]
for i=1:length(depth)
    SigD(i)=D(1,1)+D(2,1)*depth(i)-D(3,1)*Vs(i)-D(4,1)*Repi(i)-D(5,1)*Mw-D(6,1)*amax(i);
end

My problem is In an assignment A(I) = B, the number of elements in B and I must be the same.

Error in Regression (line 57) SigD(i)=D(2,1)*depth(i)-D(3,1)*Vs(i)-D(4,1)*Repi(i)-D(5,1)*Mw-D(6,1)*amax(i);

Is there any one can help me?

[Torsten]

Maybe "Mw(i)" instead of "Mw" in the equation for SigD(i) ?

Best wishes

Torsten.

[per isakson]

• Debug a MATLAB Program

Answer 1

[KSSV]

Use this:

for i=1:length(depth)
    SigD{i}=D(1,1)+D(2,1)*depth(i)-D(3,1)*Vs(i)-D(4,1)*Repi(i)-D(5,1)*Mw-D(6,1)*amax(i);
end

[Skydriver]

Thank you, my program has already running