How to read this file in MATLAB?
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I want to access the data in a file. The file is a TextEdit Document that appears to be unsupported. How do I do this? When I input fileID = fopen(filename,'r'), the command returns 3. I guess I will need to convert the file and then read it, but how?
6 Kommentare
Star Strider
am 28 Mär. 2022
The readtable function is able to read it. There are two non-empty entries in ‘Var8’ and ‘Var9’ that may be non-printable characters.
T1 = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/943824/test.trj.txt', 'VariableNamingRule','preserve')
Vars_8_9_Info = [nnz(~isempty(T1.Var8)); nnz(~isempty(T1.Var9))]
Var_8_Content = cellfun(@double,T1.Var8(~isempty(T1.Var8),:), 'Unif',0);
Var_9_Content = cellfun(@double,T1.Var9(~isempty(T1.Var9),:), 'Unif',0);
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Mathieu NOE
am 28 Mär. 2022
hi
if you simply want a numerical array you can use also readmatrix
out = readmatrix('test.trj.txt' ,"NumHeaderLines", 9)
Antworten (2)
Stephen23
am 29 Mär. 2022
Bearbeitet: Stephen23
am 29 Mär. 2022
"I guess I will need to convert the file and then read it, but how?"
Why do you "guess" that? READTABLE has no problem importing the file data:
copyfile('test.trj.txt','test.trj') % just for this forum
fnm = 'test.trj';
opt = detectImportOptions(fnm, 'filetype','delimitedtext', 'NumHeaderLines',9, 'ExpectedNumVariables',7);
tbl = readtable(fnm,opt);
tbl.Properties.VariableNames = {'id','type','mol','x','y','z','bP'}
2 Kommentare
Stephen23
am 2 Apr. 2022
Bearbeitet: Stephen23
am 2 Apr. 2022
"copyfile isn't ideal because the files are huge"
COPYFILE is, exactly as I wrote in my answer, just for this forum. Of course you do NOT need to use COPYFILE.
I just used it to get around the restricted file extensions that this forum supports. Another approach would have been to zip it up and then use UNZIP... but would you need to do that with your file? NO. Of course you use your file.
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