Help with csv data preparation
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FRANCISCO
el 11 de Nov. de 2013
Comentada: Simon
el 12 de Nov. de 2013
I applied the code:
if true
% code
load file
fid = fopen('data.csv', 'r');
FC = textscan(fid, '%s', 'Delimiter', '\n');
fclose(fid);
FC = FC{1};
% extract data
for n = 1:length(FC)
Data{n, 1:3} = sscanf(FC{n}, '%s %d %f');
end
end
Still I have problems extracting values. Applying that CODES up before the "for" loop, matlab gives me cell:
'0000, 0,0 '
'0001, 1,0.2 '
'0010, 0,0 '
'0011, 0,0 '
'0100, 1,0.2 '
'0101, 0,0 '
'0110, 0,0 '
'0111, 0,0 '
'1000, 1,0.2 '
'1001, 0,0 '
'1010, 1,0.2 '
'1011, 0,0 ' and what I want is that I transform this into different columns as follows:
| 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 1 | 1 | 0.2 |
How could I do this?
4 comentarios
Walter Roberson
el 11 de Nov. de 2013
Please show us a sample input line as known to excel, and tell us what datatype excel thinks the first column is.
Respuesta aceptada
Simon
el 12 de Nov. de 2013
Hi!
In your cell array the second and third entry of every line are numeric values already. You may split the string in the first cell of every line like
[a, b, c, d] = strread(Data{1, 1}, '%1d%1d%1d%1d');
2 comentarios
Simon
el 12 de Nov. de 2013
Hi!
What code did you run? What is your input (in my case Data{1, 1})? What is the error message?
It seems you have an error converting to your Data cell array. Try
fid = fopen('data.csv', 'r');
FC = textscan(fid, '%s', 'Delimiter', '\n');
fclose(fid);
FC = FC{1};
% remove ',', replace with ' '
FC = regexprep(FC, ',', ' ');
% extract data
for n = 1:length(FC)
Data{n, 1} = sscanf(FC{n}, '%s', 1);
Data{n, 2} = sscanf(FC{n}, '%*s %d');
Data{n, 3} = sscanf(FC{n}, '%*s %*d %f');
end
Of course you will get an error if you have '[]' around your first entry in every row. You should have written that before! Remove them first.
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