error getting unable to open file

Question

Viswajit Talluru 2022-12-12

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1876302-error-getting-unable-to-open-file

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')

4 个评论
显示 2更早的评论隐藏 2更早的评论

Viswajit Talluru 2022-12-12

c2.csv

file is attached

Stephen23 2022-12-12

编辑：Stephen23 2022-12-12

在 MATLAB Online 中打开

c2.csv

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
TimeDisplacementForce_______________________

       0            0       -0.0812
02            0        -0.086
04       0.0003       -0.0434
06       0.0016        0.2524
08        0.004        0.8564
1       0.0065        1.4255
12       0.0088        1.9586
14       0.0117         2.589
16       0.0154          3.31
18       0.0196        4.0906
2       0.0236         4.811
22       0.0273        5.4391
24       0.0308        5.9655
26       0.0341        6.4445
28       0.0374        6.9111
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

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

VBBV 2022-12-12

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1876302-error-getting-unable-to-open-file#answer_1125972

在 MATLAB Online 中打开

Begin the filenames with characters ,

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

3 个评论
显示 1更早的评论隐藏 1更早的评论

Viswajit Talluru 2022-12-12

does not work shows the same error

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

请先登录，再进行评论。