Reading ascii data with headers

Hi,

I am trying to read an ascii file with importdata function. The separator is tabulator (\t).

Data_and_Headers = importdata(DataTxTfile, '\t');
All_Data = Data_and_Headers.data;
Titles = Data_and_Headers.textdata(1,:);
Units = Data_and_Headers.textdata(2,:);

There are 2 header's rows. The first row is the title and the second is the units. Numeric values starts at the third row. The reading of the numeric data and units works fine but title's reading is not working. I have 31 columns and all the column's titles are regrouped in the first cell while the remaining 30 are empty. It seems that the tabulator is not used for title row but works fine for the remaining.

Any suggestions?

Ascii file is attached.

Thanks for your help.

Martin

Answer 1

[Stephen23]

Why not just use fgetl and textscan instead to load the data:

fid = fopen('Acquisition.txt','rt');
hdr = strtrim(regexp(fgetl(fid),'\t','split'));
unt = strtrim(regexp(fgetl(fid),'\t','split'));
mat = cell2mat(textscan(fid,repmat('%f',1,numel(hdr))));
fclose(fid);

This imports the uploaded file and produces these variables:

>> hdr(:)
ans = 
  'Time'
  'X Displ (abs)'
  'Y Displ (abs)'
  'Z Displ (abs)'
  'RX Displ (abs)'
...
  'ABS Act Z-NW Displacement'
  'ABS Act Z-NW Force'
  'ABS Act Z-SE Displacement'
>> unt(:)
ans = 
  'sec'
  'mm'
  'mm'
  'mm'
  'rad'
  'rad'
  'rad'
  'kN'
...
  'kN'
  'mm'
  'kN'
  'ABS Act Z-SE Force'
  'ABS Act Z-SW Displacement'
  'ABS Act Z-SW Force'

and of course all 46 rows of the numeric data:

>> whos mat
Name       Size            Bytes  Class     Attributes
mat       46x31            11408  double

[Martin Leclerc]

Hi Stephen,

Thanks a lot, it works just fine!

Regards,

Martin