In Matlab, if we have to read text with mixed data (numerical and alphanumerical data) and the text has delimiter, we can use textscan.
for example:
if the text file contains the following data:
<TICKER>,<PER>,<DTYYYYMMDD>,<TIME>,<OPEN>,<HIGH>,<LOW>,<CLOSE>,<VOL>,<OPENINT>
HU___1985G,D,19841203,000000,0.7180,0.7250,0.7160,0.7245,221,165
HU___1985G,D,19841204,000000,0.7275,0.7290,0.7240,0.7254,75,220
HU___1985G,D,19841205,000000,0.7190,0.7250,0.7165,0.7230,267,390
Then we can write the code like:
fid = fopen(filename);
c = textscan(fid, '%s %s %d %s %n %n %n %n %n %n' ,'delimiter', ',', 'headerLines', 1);
fclose(fid);
Here the delimiter is ',' and the function will skip 1 line of header.
Wednesday, November 18, 2009
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