error getting unable to open file

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Viswajit Talluru
Viswajit Talluru 2022-12-12
编辑： Stephen23 2022-12-12
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')
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Stephen23
Stephen23 2022-12-12
编辑：Stephen23 2022-12-12
Ran in:
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

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回答（1 个）

VBBV
VBBV 2022-12-12
Begin the filenames with characters ,
forcedisp1 = readtable("c2.csv"); % use characters first
forcedisp2 = readtable("c3.csv");
forcedisp3 = readtable("c5.csv");
forcedisp4 = readtable("c6.csv");
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VBBV
VBBV 2022-12-12
编辑：VBBV 2022-12-12
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

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