Matlab: read only header line from a .csv-file

Question

Assume there\'s a myfile.csv with variable names in the first row and decimal numbers in the following ones. In Matlab I\'d like to read the header line and the decimal numbers

Answer 1

To extract the first line, you just need

fid = fopen('myfile.csv');
a = textscan(fid,'%s',1);
fclose(fid);

Answer 2

Open the file with fopen, read the header line with textscan, read the decimal numbers with fscanf, and call fclose in the end - only 4 lines in total :) Example input file:

Weight,Size,Count
1,2,3
4,5,6
7,8,9
10,11,12

Reading of this file:

fid = fopen('myfile.csv', 'r');
header = textscan(fid, '%[^,],%[^,],%[^,\r\n]', 1);
data = transpose(fscanf(fid, '%g,%g,%g\n', [3, Inf]));
fclose(fid);

for i = 1 : 3; disp(['"' cell2mat(header{i}) '"']); end;
disp(data);

Note that the data read by fscanf need to be transposed (I emphasized this by writing transpose instead of '). The output:

"Weight"
"Size"
"Count"
     1     2     3
     4     5     6
     7     8     9
    10    11    12