.csv file hex to dec converting(hex2dec is not working)
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Jeong Dae Kim
le 10 Nov 2021
Commenté : Walter Roberson
le 10 Nov 2021
hi. i'm converting .csv file (hex) to .csv file (dec).
if a.csv file is hexadecimal
a.csv file :
['eb','80','80' ; 'eb','80','80' ...]
A = hex2dec('a.csv')
error : Error using hex2dec
Hexadecimal text must consist of characters 0-9 and A-F.
always error occurs.
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Walter Roberson
le 10 Nov 2021
You cannot apply hex2dec to a file name . You need to read the hex data out of the file first and convert that if you are going to use hex2dec .
Could you confirm that the csv file contains both commas and semi-colons ? Are the semi-colons after every third entry exactly? Or is the actual input like
'eb', '80', '80'
'eb', '80', '80'
with no '[' and no semi-colon ?
Is there the same number on every line? Is there indeed multiple lines?
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Walter Roberson
le 10 Nov 2021
in_filename = 'outfile_ycbcr.csv';
out_filename = 'ycbcr_dec.csv';
[fid, msg] = fopen(in_filename, 'r');
if fid < 0
error('failed to open file "%s" because "%s"', in_filename, msg);
end
data_dec = cell2mat(textscan(fid, '%x, %x, %x'));
fclose(fid);
writematrix(data_dec, out_filename);
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KSSV
le 10 Nov 2021
You cannot convert like that.
- Read the csv file data using csvread or readtable.
- Then on the data use the function hex2dec
- Then write converted data into csv file using write2table
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