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
2022-3-24
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)
4 个评论
Chunru
2022-3-24
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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