Why do I receive this error "Invalid data type. Input arrays must be numeric or logical."?
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Hi,
I have a couple of .csv files and I am trying to read them first and then filter them out in a loop. But when I use "readtable" to read the .csv file, I receive this error:
Error using filter
Invalid data type. Input arrays must be numeric or logical.
Error in bestalgo_combined_newdata (line 18)
y_n2=filter(b,a,y2);
But when I run the same code with "xlsread" (I know this is not recommended, but still...) I get no error, everything runs fine. Can someone help what's the issue?
I am just adding a part of my code, because I don't think the whole code is relevant, no matter I read one .csv file or several, issue remains.
clearvars;
%Filter design
fl=0;
fh=9000;
fs=40000;
array_pW=zeros(100,1);
y2=readtable('cross talking.csv');
%more file to read, removed%
x=readtable('continuous.csv');
for e=1:100
fl=fl+50;
[b,a]=ellip(2, 1, 40, [fl,fh]/(fs/2),'bandpass');
y_n2=filter(b,a,y2);
y_h2 = normalize(y_n2, 'range', [-1 1]);
power2=rms(y_h2)^2;
%more code, removed...%
end
Can someone help? Thanks.
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Chunru
2022년 3월 24일
It seems file to read the data using "readtable" as shown below.
You can try "dbstop error" before running the code to locate where it goes wrong.
x= readtable("https://www.mathworks.com/matlabcentral/answers/uploaded_files/939564/cross%20talking.csv");
head(x)
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Chunru
2022년 3월 24일
It looks like you use the table as an input to the filter function (you don't show the complete code). You can try to replace "readtable" by "readmatrix".
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