I dont understand this error in line 653 and the end goal is to make a graph

Hi Guys hopefully some of you guys can help. im pretty new to Matlab 2020a and do not have much experience.

i have entered the following code into my live script : (i have attached and shorten verision of the Sep_Consibio Cloud Datalog.csv in this question)

%% Raw data plot for Septemper 
% Data import
tic

opts = delimitedTextImportOptions("NumVariables", 4);
% Specify range and delimiter
opts.DataLines = [1, Inf];
opts.Delimiter = ",";

% Specify column names and types
opts.VariableNames = ["Timestamp", "Date", "H2SIn", "H2SOut"];
opts.VariableTypes = ["double", "datetime", "double", "double"];

% Specify file level properties
opts.ExtraColumnsRule = "ignore";
opts.EmptyLineRule = "read";

% Specify variable properties
opts = setvaropts(opts, "Date", "InputFormat", "dd/MM-yy HH:mm:ss");
% Import online measurement data from Consibio
ConsibioSepdatalog = readtable("Users\amil\Documents\MATLAB\Rawdata2022\Sep_Consibio Cloud Datalog.csv", opts);
ConsibioSepdatalogTrimNew = ConsibioSepdatalog(:,:);

toc

and get the following Error using matlab.io.ImportOptions/readtable (line 653)

Unable to find or open 'Users\amil\Documents\MATLAB\Rawdata2022\Sep_Consibio Cloud Datalog.csv'. Check the path and filename or file permissions. --> however the document is in the same folder as the live script --> i how give my file permission? I'm an apple user and have a MacBook Air (13-inch, 2017) 8 GB 1600 MHz DDR3, icore 5.

the goal is to use the Rawdata in a plot where the x-axis is time [dd.mm.hh.mm:ss] and y- axis is for the concenctration in and out of H2S [ppm]

• if you have any suggestion for this part of the code please comment :)

Answer 1

[Image Analyst]

Since the file is in the same folder as the m-file, you can do

fullFileName = fullfile(pwd, 'Sep_Consibio Cloud Datalog.csv');
if ~isfile(fullFileName)
    errorMessage = sprintf('File not found:\n"%s"\nCheck the spelling.')
    uiwait(errordlg(errorMessage));
    return;
end
% If you get here, the file exists.
fprintf('Processing "%s".', fullFileName)
ConsibioSepdatalog = readtable(fullFileName, opts);

[Amil Ali]

thank you for your answer but what function/command does have? does it give a info about when the file is imported?

fprintf('Processing "%s".', fullFileName)

i get the following information elasped time is 4 seconds and it says Processing "Users\amil\Documents\MATLAB\Rawdata2022\Sep_Consibio Cloud Datalog.csv"

[Image Analyst]

It just tells you what file is being processed at that point in time. If you don't want that information printed to the command window, you can delete that line.

[Amil Ali]

Ok thx you - No alert was given of the file not exist. That mean with your code i have imported the file i guess.

[Image Analyst]

Yes. So it must have found it. Since it did, it would have printed it out to the command window. If you want a popup message you can do

fullFileName = fullfile(pwd, 'Sep_Consibio Cloud Datalog.csv');
if ~isfile(fullFileName)
    errorMessage = sprintf('File not found:\n"%s"\nCheck the spelling.')
    uiwait(errordlg(errorMessage));
    return;
end
% If you get here, the file exists.
message = sprintf('Success!  Found the file!\nNow processing "%s".', fullFileName);
fprintf('%s\n', message); % Print to command window.
uiwait(helpdlg(message)); % Pop up a dialog box with the same info.
ConsibioSepdatalog = readtable(fullFileName, opts);

Answer 2

[Alan Stevens]

Get rid of the gaps between Consibio and Cloud, and between Cloud and Datalog (In the file name and when calling it).

[Amil Ali]

thanks for you answer unfortunatly it didnt work

[Image Analyst]

What about my answer below? Did you try that? It will alert you if the file does not exist.

Answer 3

[Walter Roberson]

ConsibioSepdatalog = readtable("C:\Users\amil\Documents\MATLAB\Rawdata2022\Sep_Consibio Cloud Datalog.csv", opts);

You omitted the drive and leading \ . When you omit the leading \ then you are asking to look in a directory named Users inside your current folder

[Amil Ali]

Thank you for your answer