import file with exponential numbers

Question

Day Hong Kim 2021-5-17

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/832128-import-file-with-exponential-numbers

编辑： Stephen23 2021-5-17

pct_t2m.zip

Hello all, hope you having a great day. I am trying to import the file filled with exponential numbers. Is there a function to import such data or do I need to put proper data spec to read the file? I attached the file fyi. Below is just the part of the file.

0.12906E+02 0.14317E+02 0.88397E+01 0.34394E+01 -0.44398E+01 -0.10266E+02

-0.12585E+02 -0.11425E+02 -0.71798E+01 -0.13563E+00 0.65529E+01 0.10236E+02

0.12218E+02 0.11005E+02 0.83890E+01 0.29082E+01 -0.48280E+01 -0.10441E+02

-0.12556E+02 -0.11418E+02 -0.65793E+01 -0.10231E+01 0.68138E+01 0.10930E+02

0.10841E+02 0.10579E+02 0.75920E+01 0.18988E+01 -0.47565E+01 -0.10717E+02

-0.12586E+02 -0.11715E+02 -0.71195E+01 -0.10548E+01 0.53404E+01 0.97314E+01

0.13372E+02 0.11455E+02 0.88030E+01 0.29380E+01 -0.40503E+01 -0.10190E+02

-0.12504E+02 -0.11302E+02 -0.70396E+01 -0.26535E+00 0.70146E+01 0.10111E+02

0.12237E+02 0.11866E+02 0.72969E+01 0.32354E+01 -0.40348E+01 -0.10136E+02

-0.12563E+02 -0.11747E+02 -0.70156E+01 -0.18686E+00 0.54810E+01 0.10231E+02

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Stephen23 2021-5-17

编辑：Stephen23 2021-5-17

All of MATLAB's standard file importing functions correctly parse exponent notation. What have you tried so far?

Day Hong Kim 2021-5-17

编辑：Day Hong Kim 2021-5-17

1.txt

I just noticed that the file becomes empty when I zip it. I changed the format to .txt from .d.

I have tried fread, fscanf and importdata. To read exponent notation, how should the format spec look like?

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Answer 1

Stephen23 2021-5-17

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/832128-import-file-with-exponential-numbers#answer_701613

在 MATLAB Online 中打开

1.txt

You are making this far more complex than it needs to be:

M = readmatrix('1.txt')
M = 1656×6
   12.9060   14.3170    8.8397    3.4394   -4.4398  -10.2660
  -12.5850  -11.4250   -7.1798   -0.1356    6.5529   10.2360
   12.2180   11.0050    8.3890    2.9082   -4.8280  -10.4410
  -12.5560  -11.4180   -6.5793   -1.0231    6.8138   10.9300
   10.8410   10.5790    7.5920    1.8988   -4.7565  -10.7170
  -12.5860  -11.7150   -7.1195   -1.0548    5.3404    9.7314
   13.3720   11.4550    8.8030    2.9380   -4.0503  -10.1900
  -12.5040  -11.3020   -7.0396   -0.2653    7.0146   10.1110
   12.2370   11.8660    7.2969    3.2354   -4.0348  -10.1360
  -12.5630  -11.7470   -7.0156   -0.1869    5.4810   10.2310

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Day Hong Kim 2021-5-17

Thank you for the answer. The extension of the original file is .d, so readmatrix doesn't work, but I think I could read the file by using textscan with proper format.