Loading data from a dat file containing header

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RS
RS 2014-12-27
评论： Star Strider 2018-6-28
Hi
I have data file (KEmodel12_G201.dat) in format as seen in attached image. While loading this data in matlab, it shows error that 1st and 2nd lines do not match. First line is the header, required when i am using this data for tecplot. If remove the header, it works fine.
How do i make matlab read it from the 2nd line and not consider the 1st line? I have also attached the data file in .txt format as .dat is not supported here.
I had seen similar post, but none actually answered the question i have. This is the code i am using to load the data.
modeldata = modeldata('KEmodel12_G201.dat');
x = modeldata(:,1);
k = modeldata(:,7);
e = modeldata(:,8);
Thanks Rachit
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Star Strider
Star Strider 2014-12-27
Try this:
fidi = fopen('KEmodel12_G201.txt');
d = textscan(fidi, '%f%f%f%f%f%f%f%f', 'HeaderLines',1, 'Delimiter','\n', 'CollectOutput',1);
fclose(fidi);
modeldata = cell2mat(d);
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Geoff Hayes
Geoff Hayes 2014-12-27
Rachit - consider using importdata to read the data from file so that the first header line is ignored. Try something like
A = importdata('myFile.txt', '\t', 1);
In the above, we specify which file to import the data from, the (tab) delimiter between each column, and the number of header lines to ignore.
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RS
RS 2014-12-27
Hi Geoff Hayes,
I tried what u suggested, it showed following error:
"Attempt to reference field of non-structure array." at line 2 i.e in x = A.data(:,1);.
Answer suggested by Star Strider is working. However, it is good to know possible ways to get a solution.
Thank-you for the suggestions,
Rachit.
Geoff Hayes
Geoff Hayes 2014-12-28
This is what happens when I try to answer a question without using MATLAB! :)
The delimiter between each column should be a single whitespace. So the following
A = importdata('KEmodel12_G201.txt', ' ', 1);
would return
A =
data: [201x8 double]
textdata: {'ZONE T="Inviscid"'}
And so now you could extract the data as
x = A.data(:,1);
k = A.data(:,7);
e = A.data(:,8);
Sorry for the confusion!

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