I data has unnecessary spaces and lines

3 visualizaciones (últimos 30 días)
Joseph
Joseph el 20 de Jun. de 2013
I have a text file with labels and numeric data. This file reads similar to:
46
Carbon - cs
C -3.4 2.7 1.6
C 1.3 4.6 1.2
C 1.3 -4.2 3.5
O 2.4 4.4 5.6
O -1.0 2.5 9.3
O 2.3 -4.0 2.2
H 2.3 3.5 7.6
H 5.4 -3.6 4.0
H -3.4 -4.5 -6.9
46
Carbon - cs
C -3.4 2.7 1.6
C 1.3 4.6 1.2
C 1.3 -4.2 3.5
O 2.4 4.4 5.6
O -1.0 2.5 9.3
O 2.3 -4.0 2.2
H 2.3 3.5 7.6
H 5.4 -3.6 4.0
H -3.4 -4.5 -6.9
46
Carbon - cs
C -3.4 2.7 1.6
C 1.3 4.6 1.2
C 1.3 -4.2 3.5
O 2.4 4.4 5.6
O -1.0 2.5 9.3
O 2.3 -4.0 2.2
H 2.3 3.5 7.6
H 5.4 -3.6 4.0
H -3.4 -4.5 -6.9
I need to keep every line that starts with H and delete the rest of the lines. I then need to remove the H in front of the remaining lines. I tried using the following code to do so.
infile = fileread('Test_Data_2.txt');
newfile = regexprep(infile, '^[^H].*$', '', 'lineanchors', 'dotexceptnewline');
newfile = strrep(newfile, 'H ', '');
dlmwrite('md_msd.out', newfile, 'delimiter', '\t', ...
'precision', 6)
This code outputs the data I need but it leaves blank lines where the deleted lines used to be. This code also places a space between each number in my data set. So my output looks something like this:
(blank line here)
(blank line here)
(blank line here)
(blank line here)
(blank line here)
(blank line here)
(blank line here)
(blank line here)
2 . 3 3 . 5 7 . 6
5 . 4 - 3 . 6 4 . 0
- 3 . 4 - 4 . 5 - 6 . 9
(blank line here)
(blank line here)
(blank line here)
(blank line here)
(blank line here)
(blank line here)
(blank line here)
(blank line here)
2 . 3 3 . 5 7 . 6
5 . 4 - 3 . 6 4 . 0
- 3 . 4 - 4 . 5 - 6 . 9
(blank line here)
(blank line here)
(blank line here)
(blank line here)
(blank line here)
(blank line here)
(blank line here)
(blank line here)
2 . 3 3 . 5 7 . 6
5 . 4 - 3 . 6 4 . 0
- 3 . 4 - 4 . 5 - 6 . 9
My data should look something like this:
2.3 3.5 7.6
5.4 -3.6 4.0
-3.4 -4.5 -6.9
2.3 3.5 7.6
5.4 -3.6 4.0
-3.4 -4.5 -6.9
2.3 3.5 7.6
5.4 -3.6 4.0
-3.4 -4.5 -6.9
I'm really not sure why my data is being written into the my text file this way. Can anybody help me?

Respuesta aceptada

dpb
dpb el 21 de Jun. de 2013
Editada: dpb el 21 de Jun. de 2013
I'm not regexp whiz so I'd do sotoo..
>> type joe.dat
46
Carbon - cs
C -3.4 2.7 1.6
C 1.3 4.6 1.2
C 1.3 -4.2 3.5
O 2.4 4.4 5.6
O -1.0 2.5 9.3
O 2.3 -4.0 2.2
H 2.3 3.5 7.6
H 5.4 -3.6 4.0
H -3.4 -4.5 -6.
>> fid=fopen('joe.dat','rt');
>> d=[];
>> while ~feof(fid)
l=fgetl(fid);
if~isempty(l)
if l(1:1)=='H'
d=[d;str2num(l(2:end))];
end
end
end
>> fid=fclose(fid);
>> d
d =
2.3000 3.5000 7.6000
5.4000 -3.6000 4.0000
-3.4000 -4.5000 -6.0000
>> fid=fclose(fid);
  1 comentario
Joseph
Joseph el 24 de Jun. de 2013
Perfect! All I had to do was add a dlmwrite line to print the data. Thank you!

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