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Dimensions of arrays being concatenated are not consistent.

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Matin jaberi
Matin jaberi 2022-7-14
评论： KSSV 2022-7-14
I have following script. there are 4 txt files where each have diferent array size in columns. how can i read all the fix the error i get
Thanks

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KSSV
KSSV 2022-7-14
编辑：KSSV 2022-7-14
This line:
TimeM = [AA(:,1) BB(:,1) CC(:,1) DD(:,1)] ;
will throw error. Note that BB, CC and DD are of size 20x2 and AA(:,1) is of size 24x2. So you cannot join/ concatenate four columns of size 24x1 and 20x1. Obviously, it will trhow error. So what you can do is:
data = [AA ; BB; CC; DD] ;
TimeM = data(:,1) ;
VoltM = data(:,2) ;
plot(TimeM,VoltM)
  2 个评论
Matin jaberi
Matin jaberi 2022-7-14
is there a way to get join them in seperate column? i dont wan to get a column of 84x1
KSSV
KSSV 2022-7-14
Yes, you can. You can interpolate AA from 24x2 to 20x2 or interpolate BB, CC, DD from 20x2 to 24x2. I have shown below converting AA from 24x2 to 20x2. You need to read about interp1.
x = AA(:,1) ;
y = AA(:,2) ;
xi = linspace(min(x),max(x),20)' ;
yi = interp1(x,y,xi) ;
AA = xi yi] ;
TimeM = [AA(:,1) BB(:,1) CC(:,1) DD(:,1)] ;

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