How to remove warning message when we read csv file?
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When I try to read csv file warning message coming. I want to eliminate that message. Since I have more than 30 csv files 30 times warning messages popping. How can I remove all warning message. Here is my code
clc
clear all
d=dir('i*.csv');
opts = detectImportOptions(d(1).name,"Delimiter",",");
T = {};
for i=1:numel(d)
fid = fopen(d(i).name,'r');
nhdr = 8 + cell2mat(textscan(fid,'Total Channels:%f',1,'HeaderLines',5,'Delimiter',','));
fid = fclose(fid);
if nhdr == 8 % skip no data in file cases if that occurs (dpb conjecture)
warning(['No data. Skipped file: ' d(i).name])
continue
end
opts.DataLines = [nhdr+2 inf];
opts.VariableNamesLine = nhdr+1;
T{i} = readtable(d(i).name,opts);
end
And warning message
Warning: Column headers from the file were modified to make them valid MATLAB identifiers before creating variable names for the table. The original column headers are saved in the VariableDescriptions property.
Set 'VariableNamingRule' to 'preserve' to use the original column headers as table variable names.
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採用された回答
Mathieu NOE
2021 年 10 月 1 日
hello
simply add this line at the start of your code :
warning off
3 件のコメント
Bill Tubbs
2022 年 3 月 24 日
For anyone still using R2019b this option was: "PreserveVariableNames", 1
Gabriel
2023 年 1 月 9 日
warning off
This is a very bad solution. It's like hitting a fly with a bomb.
every warning has an off switch that you can switch just it.
use
[msg,warnID] = lastwarn
to find the warning ID and then switch just this specific warning OFF using
warning('off','MATLAB:table:ModifiedAndSavedVarnames')
or in general
warning('off',warnID)
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