error getting unable to open file

clear all
clc

forcedisp1 = readtable("2c.csv");
forcedisp2 = readtable("3c.csv");
forcedisp3 = readtable("5c.csv");
forcedisp4 = readtable("6c.csv");

og1 = 44.64;
d1 = 18.82;
area1 = (pi/4)*(d1^2);

og2 = 44.97;
d2 = 18.81;
area2 = (pi/4)*(d2^2);

og3 = 44.58;
d3 = 18.83;
area3 = (pi/4)*(d3^2);

og4 = 44.71;
d4 = 18.85;
area4 = (pi/4)*(d4^2);

forcedisp_mat1 = table2array(forcedisp1);
time1 = forcedisp_mat1(:,1);
displacement1 = forcedisp_mat1(:,2);
force1 = forcedisp_mat1(:,3);

forcedisp_mat2 = table2array(forcedisp2);
time2 = forcedisp_mat2(:,1);
displacement2 = forcedisp_mat2(:,2);
force2 = forcedisp_mat2(:,3);

forcedisp_mat3 = table2array(forcedisp3);
time3 = forcedisp_mat3(:,1);
displacement3 = forcedisp_mat3(:,2);
force3 = forcedisp_mat3(:,3);

forcedisp_mat4 = table2array(forcedisp4);
time4 = forcedisp_mat4(:,1);
displacement4 = forcedisp_mat4(:,2);
force4 = forcedisp_mat4(:,3);

stress1 = -force1./area1;
strain1 = displacement1./og1;

stress2 = -force2./area2;
strain2 = displacement2./og2;

stress3 = -force3./area3;
strain3 = displacement3./og3;

stress4 = -force4./area4;
strain4 = displacement4./og4;

figure(1)
plot(strain1,-stress1, "LineWidth", 1.5)
hold on
plot(strain2,-stress2, "LineWidth", 1.5)
hold on
plot(strain3,-stress3, "LineWidth", 1.5)
hold on
plot(strain4,-stress4, "LineWidth", 1.5)
xlabel('Strain')
ylabel('Stress MPa')

[Viswajit Talluru]

Error using readtable (line 223)

Unable to open file '2c.csv'.

Error in multiplesampleplots (line 4)

forcedisp1 = readtable("2c.csv");

[Stephen23]

There appears to be a problem with the file. Please upload a sample CSV file by clicking the paperclip button.

Note that numbering variable names like that is a sign that you are doing something wrong. You should use indexing, just like the MATLAB documentation shows:

https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html

[Viswajit Talluru]

file is attached

[Stephen23]

You used filename "2c.csv" in your question, but the file you uploaded is named "c2.csv". Different names.

The import works fine here:

M = readtable('c2.csv')

M = 42480×3 table
    Time    Displacement     Force 
    ____    ____________    _______

       0            0       -0.0812
    0.02            0        -0.086
    0.04       0.0003       -0.0434
    0.06       0.0016        0.2524
    0.08        0.004        0.8564
     0.1       0.0065        1.4255
    0.12       0.0088        1.9586
    0.14       0.0117         2.589
    0.16       0.0154          3.31
    0.18       0.0196        4.0906
     0.2       0.0236         4.811
    0.22       0.0273        5.4391
    0.24       0.0308        5.9655
    0.26       0.0341        6.4445
    0.28       0.0374        6.9111
     0.3       0.0407        7.3844

To import multiple files use the methods shown in the documentation:

https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html

Answer 1

[VBBV]

Begin the filenames with characters ,

forcedisp1 = readtable("c2.csv");  % use characters first
forcedisp2 = readtable("c3.csv");
forcedisp3 = readtable("c5.csv");
forcedisp4 = readtable("c6.csv");

[VBBV]

Save the CSV /Excel filenames that begin with characters, instead of numbers

[Viswajit Talluru]

does not work shows the same error

[VBBV]

May be you might have entered the filename as 2c.csv while saving the file, but still using the xlsx extension. So, the filename actually becomes 2c.csv.xlsx instead of 2c.csv Check again. Save the filename as c2 while saving data and select the dropdown option below the filename and select *.csv