organising data with fscanf
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file=fopen('data.txt','r');
line1=fgetl(file);
formatSpec_1 = '%d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d\n';
formatSpec_2 = '%d, %d, %d, %d, %d\n';
element_row_1 = fscanf(file, formatSpec_1, [16,inf]);
element_row_2 = fscanf(file, formatSpec_2, [5,inf]);
Hello Community,
I am trying to organise my data but I am not successful. I attached my sample text data. My purpose is to reach 5 by 21 matrix where each row should be organised by concentrating two rows periodically. The desired first row is as below.
1, 16311, 16312, 39037, 39036, 1596, 1597, 16285, 16284, 49791, 49790, 49789, 49788, 49792, 49793, 49794, 49795, 49797, 49796, 49798, 49799
I have tried to assign two formatSpec for two rows that are containing 16 and 5 numerical values. If I was succeed for this, I plan to manipulate two element row matrices to make it one matrix.
How can I solve this issue?
Thanks,
Mesut
2 Comments
Jan
on 4 Oct 2022
The file looks like this:
*Element, type=C3D20R
1, 16311, 16312, 39037, 39036, 1596, 1597, 16285, 16284, 49791, 49790, 49789, 49788, 49792, 49793, 49794,
49795, 49797, 49796, 49798, 49799
2, 16312, 16313, 39038, 39037, 1597, 1598, 16286, 16285, 49802, 49801, 49800, 49790, 49803, 49804, 49805,
49793, 49796, 49806, 49807, 49798
3, 16313, 16314, 39039, 39038, 1598, 1599, 16287, 16286, 49810, 49809, 49808, 49801, 49811, 49812, 49813,
49804, 49806, 49814, 49815, 49807
4, 16314, 16315, 39040, 39039, 1599, 1600, 16288, 16287, 49818, 49817, 49816, 49809, 49819, 49820, 49821,
49812, 49814, 49822, 49823, 49815
5, 16315, 16316, 39041, 39040, 1600, 1601, 16289, 16288, 49826, 49825, 49824, 49817, 49827, 49828, 49829,
49820, 49822, 49830, 49831, 49823
Are you sure that there is a line break? Or tis this an artifact of the editor you view the data in? Did you note the trailing comma in the first lines of the data? Then "... %d, %d, %d\n'" doe not match, because the data end with: "... %d, %d, %d,\n'".
What are "two element row matrices"?
Accepted Answer
dpb
on 4 Oct 2022
file=readlines(websave('data.txt','https://www.mathworks.com/matlabcentral/answers/uploaded_files/1145645/data.txt'));
data=[];
for i=2:2:numel(file)
str=file(i)+" "+strtrim(file(i+1));
data=[data;cell2mat(textscan(char(str),'%f','delimiter',',')).'];
end
data
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