MATLAB: Read numeric data with csvread

csvread

Hello,

I got a csv-file that looks like this.

 * text here
 * more text...
 1,20,3,4
 2,30,4,5
 * text again
 3,4,6,7
 *text

And so it goes on.

How do I read the csv-file and only get the numeric data. Everything that has a "*" and text after should be disgarded.

Thank you.

Best Answer

doc textscan  % NB: optional 'commentstyle' parameter

Related Solutions

MATLAB: Fopen problem How does it work

fid=fopen('VarName3.txt','r'); 
atensao=fread(fid,'float'); 
fclose(fid);

Surprising got anything that reasonable. If the input file is actually an ASCII text file, then use fscanf instead of fread. fread is for stream unformatted data, not formatted.

fid=fopen('VarName3.txt','r'); 
atensao=fscanf(fid,'%f'); 
fclose(fid);

Or use one of the higher-level routines--while deprecated by TMW, textread is awfully handy for such simple cases as it wraps the fopen/fclose in the call and returns an array rather than a cell for the much fancier textscan

atensao=textread('VarName3.txt');

even allowing to dispense with the format string for simple numeric data such as your case. See

doc textread
doc textscan
doc fscanf

for more details

MATLAB: Issue with data format when using textscan()

The format should be all lower case for duration.

%{hh:mm:ss}T

However, the data appears to be delimited as semicolon. You'd have more luck with readtable:

opts = detectImportOptions('D:\SI010118.txt')
opts = setvartype(opts,1,'datetime')
opts = setvaropts(opts,1,'InputFormat','dd.MM.uuuu HH:mm:ss')
readtable('D:\SI010118.txt',opts)

Best Answer

Related Solutions

MATLAB: Fopen problem How does it work

MATLAB: Issue with data format when using textscan()

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