how to read complicated text file

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Michal Kvasnicka
Michal Kvasnicka 2013-9-19
Hello,
How to read the following "complicated" text file via textscan?
see attached file.dat:
name | multiplicity | pos | rot | excore
------------------------------------------------
a | 2 | 2 3 | 1 | 1
b | 1 | 1 2 3 | 6 | 1
c | 2 | 1 | 6 | 0
...
------------------------------------------------
The number of rows is uknown. The number of integers at column "pos" is variable.

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采纳的回答

Simon
Simon 2013-9-19
try this
% read file with 5 columns and delimiter '|'
fid = fopen('readin.txt');
FC = textscan(fid, '%s %s %s %s %s', 'delimiter', '|');
fclose(fid);
% postprocessing
% remove blanks from string column
FC(1) = strtrim(FC(1));
% convert numeric columns
for n = 2:5
FC{n} = cellfun(@(x) str2num(x), FC{n}, 'UniformOutput', false);
end
name = FC{1};
multiplicity = cell2mat(FC{2});
pos = FC{3};
rot = cell2mat(FC{4});
excore = cell2mat(FC{5});
  3 个评论
显示 1更早的评论
Michal Kvasnicka
Michal Kvasnicka 2013-9-19
编辑：Michal Kvasnicka 2013-9-19
Could be possible to create output variables names from 1st row of text file, too?
Simon
Simon 2013-9-20
If the first row is always the header, no problem:
% read file with 5 columns and delimiter '|'
fid = fopen('readin.txt');
FC = textscan(fid, '%s %s %s %s %s', 'delimiter', '|');
fclose(fid);
% get header
Header = cellfun(@(x) x(1), FC);
% remove header from file contents
FC = cellfun(@(x) x(2:end), FC, 'UniformOutput', false);
% postprocessing
% remove blanks from string column
FC(1) = strtrim(FC(1));
% convert numeric columns
for n = 2:5
FC{n} = cellfun(@(x) str2num(x), FC{n}, 'UniformOutput', false);
end
F1 = FC{1};
F2 = cell2mat(FC{2});
F3 = FC{3};
F4 = cell2mat(FC{4});
F5 = cell2mat(FC{5});
for n = 1:5
eval(sprintf('%s = F%d;', Header{n}, n));
clear(sprintf('F%d', n));
end

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更多回答（2 个）

ES
ES 2013-9-19
use textscan with delimiter '|'
FileObj=fopen(FileName);
CellData=textscan(FileObj, ...
'%s %s %s %s %s %s %s %s %s', 'delimiter', '|');
  1 个评论
Michal Kvasnicka
Michal Kvasnicka 2013-9-19
The number of rows is uknown!!! So, number of "%s" is not possible to set in advance.

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Azzi Abdelmalek
Azzi Abdelmalek 2013-9-19
编辑：Azzi Abdelmalek 2013-9-19
Use fgetl to read your file then parse the result
fid = fopen('file.txt');
line1 = fgetl(fid);
res={line1};
while ischar(line1)
line1 = fgetl(fid);
res{end+1} =line1
end
fclose(fid);
res(end)=[]
  1 个评论
Michal Kvasnicka
Michal Kvasnicka 2013-9-19
编辑：Michal Kvasnicka 2013-9-19
Thanks, but the parsing of res cell in this method is very painfull :) So, what I neeed is exactly as follows:
after reading the file I need the following outputs:
name = {'a','b','c'}
multiplicity = [2 1 2]
pos = {[2 3], [1 2 3], [1]}
rot = [1 6 6]
excore = [1 1 0 ]

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