convert data into matrix

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Raneem Alshair
Raneem Alshair 2020-3-2
评论： dpb 2020-3-4
i have a data in notepad file (data is many numbers in many rows and columns) ,, how i can read it as a matrix 2x2 only using matlab code ?
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Walter Roberson
Walter Roberson 2020-3-2
You cannot do that. The information you need for the 2 x 2 output that you expect, is not contained in the input file.
dpb
dpb 2020-3-2
编辑：dpb 2020-3-3
In fact, what is in the data file is the frequency trace from the analyzer for the eight signals; what was derived from that isn't in the file.
There may be some other way the instrument can download what you're looking for, but this wasn't it.
ADDENDUM:
Or maybe there was another file created and you've just opened the wrong one???

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回答（1 个）

Image Analyst
Image Analyst 2020-3-3
Try
data = csvread(filename, 1, 1) % old MATLAB
or
data = readmatrix(filename, 'numHeaderLInes', 1); % new MATLAB
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Walter Roberson
Walter Roberson 2020-3-4
Sigh, looks like what I thought was a 5 is really an S. The desired output was being shown in a pattern, whereas I was reading the desired output as being actual values such as 521
dpb
dpb 2020-3-4
Ah! I had an advantage in knowing what he was talking about when he made the first followup to confirm what I first suspected. He's looking for what will be a complex array for each of the four elements represented symbolically in the image...but that's not the data in the file he has there; those appear to be the individual trace amplitudes by frequency w/o the phase information (PSDs roughly).

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