MATLAB Answers

Read data from file

4 ビュー (過去 30 日間)
Ivan Volodin
Ivan Volodin 2018 年 3 月 15 日
コメント済み: KL 2018 年 3 月 15 日
Hello!
I was not sure which title fits better in my case so I just left it to be written in the most general way. I have the file with following structure:
Step 1
0.10190103
0.10145140
0.10097524
0.10050153
0.10003042
9.95795131E-02
9.91610140E-02
Step 2
9.81189385E-02
9.75561813E-02
9.80424136E-02
0.10000000
0.10000000
9.80617628E-02
9.77829769E-02
...
Step N
0.10000000
0.10000000
9.93788019E-02
0.11977901
0.12290157
0.12588248
0.12861508
And I need to read it from N arrays, so
V1 = [0.10190103
0.10145140
0.10097524
0.10050153
0.10003042
9.95795131E-02
9.91610140E-02]
V2 = [9.81189385E-02
9.75561813E-02
9.80424136E-02
0.10000000
0.10000000
9.80617628E-02
9.77829769E-02]
VN = [0.10000000
0.10000000
9.93788019E-02
0.11977901
0.12290157
0.12588248
0.12861508]
I have read some examples to read data into arrays, but have not got something related to my case...
Can someone help me please..?

  2 件のコメント

KL
KL 2018 年 3 月 15 日
Please attach your sample file using the paperclip icon.
Ivan Volodin
Ivan Volodin 2018 年 3 月 15 日
Sure, please see it in attach.

サインインしてコメントする。

回答 (1 件)

KL
KL 2018 年 3 月 15 日
編集済み: KL 2018 年 3 月 15 日
Something quick,
d = readtable('whole res.txt');
d = table2cell(d);
d = regexprep(d,' ','');
d = cellfun(@str2double,d,'uni',0);
d(cellfun(@isnan,d)) = [];
d = reshape(cell2mat(d),12,[]);
I reckon there should be faster ways. Even using one for loop right after readtable to combine all operations inside the for-loop step should also be more efficient than this. Nevertheless, this should work.
P.S: saving multiple variables (as you mentioned in your question) is not a good idea, use a matrix instead. If some of the columns have lesser rows, use a cell array.

  2 件のコメント

Ivan Volodin
Ivan Volodin 2018 年 3 月 15 日
Thank you for your answer, but how it is going to work in my case if readtable fails, because "All lines of a text file must have the same number of delimiters" ..?
KL
KL 2018 年 3 月 15 日
Where do you get these files from? A lot can be easier if the files are exported properly (with proper delimiters and using numbers instead of strings)

サインインしてコメントする。

タグ

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by