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Jean
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How to import text file data (with exponential numbers) into Matlab for graphing and signal processing?

Asked by Jean
on 5 Mar 2013
Latest activity Edited by Walter Roberson
on 21 Sep 2017
Hello,
I need to import data from a text file with a format something like:
1.000e-1 4.336e-6 1.346e-6 3.200e-6 1.574e-6 1.194e-6 2.026e-6 1.850e-6 1.477e-6
2.000e-1 3.705e-6 1.028e-6 2.059e-6 1.092e-6 1.025e-6 1.547e-6 1.456e-6 1.257e-6
3.000e-1 3.341e-6 8.228e-7 1.528e-6 8.319e-7 8.841e-7 1.220e-6 1.199e-6 1.099e-6
4.000e-1 3.083e-6 6.876e-7 1.239e-6 6.794e-7 7.743e-7 9.999e-7 1.025e-6 9.833e-7
5.000e-1 2.882e-6 5.936e-7 1.062e-6 5.814e-7 6.880e-7 8.467e-7 9.004e-7 8.952e-7
6.000e-1 2.719e-6 5.250e-7 9.402e-7 5.137e-7 6.195e-7 7.368e-7 8.075e-7 8.256e-7
7.000e-1 2.583e-6 4.734e-7 8.529e-7 4.638e-7 5.633e-7 6.546e-7 7.359e-7 7.689e-7
8.000e-1 2.467e-6 4.334e-7 7.859e-7 4.260e-7 5.175e-7 5.926e-7 6.790e-7 7.210e-7
9.000e-1 2.369e-6 4.013e-7 7.334e-7 3.963e-7 4.789e-7 5.431e-7 6.320e-7 6.809e-7
Basically, I am not sure how it will show up on the posting, but there are 9 very long columns, each representing a separate data set. I Just need to extract the data from each column into a vector or matrix I can use for graphing etc. I am having a lot of trouble with various ways to import (textscan, using .dat formats, etc) especially with holding the exponentials. What's the best way to do this? Thanks so much!

  1 Comment

Also, I should have noted one of the issues is one column has a '+e' format for the exponential, which I believe is causing some issues, but I don't know how to solve this and it is so long (hundreds?) it is impractical to manually change it

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