I am new to Matlab and hope someone can help me out. I try to get the bandwidth at certain reading of a peak, and write the following code. But run into a few problems. The codes are follows.
%%%read in data%%%
origindata=importdata('rawdata.txt');
f=origindata(:,1);
a=origindata(:,2);
b=origindata(:,3);
c=origindata(:,4);
d=origindata(:,5);
%%%start count y%%%
y=0;
%%%start loop t for calculation%%%%
for t=(0.1:0.1:20)
e=a-j*b;
u=c-j*d;
rl=u.*e.*f*t;
%%%save results%%%
y=y+1;
y1(:,3*y-2)=f;
y1(:,3*y-1)=rl;
y1(:,3*y)=t;
%%%calculate peak width%%%
RLmax=min(rl);
w1=f(f(abs(rl+10)<0.1)<f(rl==RLmax));
w2=f(f(abs(rl+10)<0.1)>f(rl==RLmax));
width=w2-w1;
%%%save peak width in z1%%%
z1(y,1)=t;
z1(y,2)=f(rl==RLmax);
z1(y,3)=RLmax;
z1(y,4)=w1;
z1(y,5)=w2;
z1(y,6)=width;
hold on;
end;
xlswrite('y1',y1);
xlswrite('z1',z1);
I got this:
"Unable to perform assignment because the size of the left side is 1-by-1 and the size of the
right side is 0-by-1."
It seemed the following codes caused problem, as I removed them and related, it ran ok.
w1=f(f(abs(rl+10)<0.1)<f(rl==RLmax));
w2=f(f(abs(rl+10)<0.1)>f(rl==RLmax));
width=w2-w1;
But I need to extract those information. Can anyone help me out? Thank you.
