MATLAB: How to import the stiffness matrix generated by ansys and contained in a file txt

ansys to matlab

Import stiffness matrix in matlab

Best Answer

Try importdata(), dlmread(), csvread(), fgetl(), textscan(), or load() depending on what form the data is in. I don't know what ansys is.

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MATLAB: Regexp usage for cellArray data which includes both characters and numbers.

cellArray ={'O2930202    465254.432       4066809.025';
    'O2910008    499252.083        4042876.84';
    'O2920014    494404.625       4047958.526'}
out1 = regexp(cellArray,'(^[a-zA-Z]*)|((?<=^\w*)\d*)','match');
out = cat(1,out1{:});

MATLAB: Trying to obtain data from a txt file but one column has negative values and ignores the – sign and leaves it as +

Why use regular expression here. Just use readmatrix()

M = readmatrix('data.txt');

Result

>> M
M =
   245    54   -45

For the regular expression in your question, you missed the minus (-) sign

str = fileread('data.txt');
nums = cellfun(@str2double, regexp(str, '(-?[\d.,]+)', 'match'));

Best Answer

Related Solutions

MATLAB: Regexp usage for cellArray data which includes both characters and numbers.

MATLAB: Trying to obtain data from a txt file but one column has negative values and ignores the – sign and leaves it as +

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