error getting unable to open file
显示 更早的评论
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
Viswajit Talluru
2022-12-12
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:
Viswajit Talluru
2022-12-12
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')
To import multiple files use the methods shown in the documentation:
回答（1 个）
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");
3 个评论
VBBV
2022-12-12
Save the CSV /Excel filenames that begin with characters, instead of numbers
Viswajit Talluru
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
类别
在 帮助中心 和 File Exchange 中查找有关 Stress and Strain 的更多信息
2022-12-12
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
