How to remove warning message when we read csv file?

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.

Answer 1

[Mathieu NOE]

hello

simply add this line at the start of your code :

warning off

[Steven Lord]

That's a very large hammer that could mask real problems in the code.

If you're okay with getting the original column headers I'd follow the instructions in the warning and modify the readtable call.

Set 'VariableNamingRule' to 'preserve' to use the original column headers as table variable names.

[Bill Tubbs]

For anyone still using R2019b this option was: "PreserveVariableNames", 1

[Gabriel]

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)