Import text file with header

200 vues (au cours des 30 derniers jours)
Adelyn Luu
Adelyn Luu le 26 Fév 2013
Hi, I have a text file with header, I need to import the file to matlab and to use numeric data. The numeric data in a line is separated by a ",". The file is as following Thanks Adelynne
base shear
Analysis Series = cyclic2 (cyclic2)
Load Case = [2] = [1] + cyclic
0,-2.980232E-08
0.1,-24.82325
0.2,-87.0501
0.3,-75.9906
0.4,86.35868
0.5,281.4871
0.6,417.2569
0.7,521.8102
0.8000001,622.5663
0.9,711.8201
1,785.7328
1.1,838.6344
1.2,863.1584
1.3,857.4628
1.4,817.3618
1.5,700.1636

Réponse acceptée

Jing
Jing le 26 Fév 2013
The functions that would be most helpful are 'fopen' and 'textscan'.
fid=fopen('yourtext.txt');
cdata=textscan(fid,'%f %f','delimiter',',');
fclose(fid);
  5 commentaires
Jing
Jing le 26 Fév 2013
just use textscan, and tell it you have how many header lines using HeaderLines options. Read Isakson's answer below...
per isakson
per isakson le 26 Fév 2013
Modifié(e) : per isakson le 26 Fév 2013
cdata is a cell array. Read on cell array in the on-line help. And try
plot( cdata{1}, cdata{2} )

Connectez-vous pour commenter.

Plus de réponses (4)

per isakson
per isakson le 26 Fév 2013
... but don't forget the header
fid=fopen('yourtext.txt');
cdata=textscan(fid,'%f%f','delimiter',',', 'HeaderLines', 3 );
fclose(fid);

Azzi Abdelmalek
Azzi Abdelmalek le 26 Fév 2013
fid = fopen('file.txt');
line1 = fgetl(fid);
res={line1};
while ischar(line1)
line1 = fgetl(fid);
res{end+1} =line1
end
fclose(fid);
res(end)=[]
data=res(4:end)
a=cellfun(@(x) regexp(x,',','split'),data,'un',0)
x1=str2num(char(cellfun(@(x) x{1},a,'un',0)'))
x2=str2num(char(cellfun(@(x) x{2},a,'un',0)'))

Muthu Annamalai
Muthu Annamalai le 26 Fév 2013
z=textread('filename.dat','%s','delimiter','\n')
z=z(4:end)
q=regexp(z,',','split')
data = reshape(str2double([q{:}]),2,16)'

Miroslav Balda
Miroslav Balda le 26 Fév 2013
The simplest way to read such data is in using the function txt2mat fro the File Exchange:
www.mathworks.com/matlabcentral/fileexchange/18430
Should the name of your data be Adely.txt , the following statement does the task:
A = txt2mat('Adelyn.txt','InfoLevel',0);

Catégories

En savoir plus sur Printing and Saving dans Help Center et File Exchange

Community Treasure Hunt

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

Start Hunting!

Translated by