how to read text file and to ignore the first 10 rows and to take only the 4rth and 5th columns?

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Kobi 2014-9-15

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编辑： per isakson 2014-9-16

how to read text file and to ignore the first 10 rows and to take only the 4rth and 5th columns? from this file: http://iopscience.iop.org/0266-5611/17/6/301/media/dielTM_dec4f.exp

i tried to use textscan but i don't really understand how to and it looks a bit complicated

any other solution or how to do this?

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Answer 1

per isakson 2014-9-15

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编辑：per isakson 2014-9-15

在 MATLAB Online 中打开

Try

cac = textscan( fid, '%*f%*f%*f%f%f%*f%*f', 'Headerlines', 10 );

Doc says: &nbsp %* &nbsp Skip the field. textscan does not create an output cell for any field that it skips.

That's not too complicated!

&nbsp

"any other solution or how to do this?" &nbsp None less complicated than textscan - AFAIK

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Image Analyst 2014-9-15

dlmread() would be easier if it only had a headerlines option. With textscan() you also have to call fopen() and fclose().

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Answer 2

Image Analyst 2014-9-15

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在 MATLAB Online 中打开

Maybe try importdata()

delimiterIn = ' ';
headerlinesIn = 10;
myStructure = importdata(filename,delimiterIn,headerlinesIn);
data = myStructure.data;

Worked for me.

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Image Analyst 2014-9-15

You could do it all in just 2 lines instead of the 3 required for textscan(). Plus you don't need to figure out all that stuff about '%*f%*f%*f%f%f%*f%*f' since it figures it out for you.