MATLAB Answers

Will Q
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Error: "Unable to read some of the variables due to unknown MAT-file error."

Will Q
さんによって質問されました 2019 年 5 月 21 日
最新アクティビティ Walter Roberson
さんによって コメントされました 2019 年 5 月 21 日
Hello, I have a 3.1 MB .mat file that contains activations from a hierarchical model, after reading a set of 504 images in double format. When I try to read the file in MATLAB, I receive the following error:
"Warning: Unable to read some of the variables due to unknown MAT-file error.
> In matfinfo (line 9)
In finfo (line 118)
In uiimport/gatherFilePreviewData (line 414)
In uiimport (line 244)
Error using load
Number of columns on line 2 of ASCII file
/Users/hsnsplazaresearch/Analysis/hmaxMatlab/output/exampleActivations.mat must be the same as previous lines.
Error in uiimport/runImportdata (line 465)
datastruct = load('-ascii', fileAbsolutePath);
Error in uiimport/gatherFilePreviewData (line 433)
[datastruct, textDelimiter, headerLines]= runImportdata(fileAbsolutePath, type);
Error in uiimport (line 244)
gatherFilePreviewData(fileAbsolutePath);"
I am highly confused, because the data is not ASCII. When I open in a text edtior (Atom), it appears like so:
"^[w<��H��UJT����r*IVQ��_TdDd�JJ!
�d�yp�=�=�풒�}޿�?�g|����ݓm�{�?��#���x7,^�"
The function was adapted from the HMAX model for machine vision, and the tarball can be found here: https://maxlab.neuro.georgetown.edu/hmax.html#code
The version is 2019a. Thank you so much for your time.

  4 件のコメント

Walter Roberson
2019 年 5 月 21 日
I do not know at the moment what the file is, but it is not a MATLAB .mat file .
Will Q
2019 年 5 月 21 日
I have posted the file (exampleActivations.mat) here. I also posted a second .mat file (ExampleActivations2.mat) created using the exact same script (but using a smaller data set with different images), that looks like what my file should look like.
I think it is possible that the file gets corrupted near the end of the script, but am not certain. Thank you for taking the time to look at my issue!
Adam Danz
2019 年 5 月 21 日
When I drag-drop the first mat file into my workspace,
Error using load
Unable to read MAT-file C:\Users\name\Documents\MATLAB\exampleActivations.mat.
File might be corrupt.
When I load that file with the import tool
Error using load
Number of columns on line 2 of ASCII file C:\Users\name\Documents\MATLAB\exampleActivations.mat
must be the same as previous lines.
Error in uiimport/runImportdata (line 465)
datastruct = load('-ascii', fileAbsolutePath);
Error in uiimport/gatherFilePreviewData (line 433)
[datastruct, textDelimiter, headerLines]= runImportdata(fileAbsolutePath, type);
Error in uiimport (line 244)
gatherFilePreviewData(fileAbsolutePath);

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1 件の回答

回答者: Murugan C
2019 年 5 月 21 日

Hi Will Q,
I can load 2nd (exampleActivations2) mat file data
%
load_mat = load('exampleActivations2.mat')
load_mat =
bestBands: {1x8 cell}
bestLocations: {1x8 cell}
c2: {1x8 cell}
extract_data = h.c2{1};
imshow(extract_data)
%
loadmatimg1.JPG
img1.JPG
But while loading 1'st mat file. I got error as like file may be corupted.
%
Error using load
Unable to read MAT-file E:\Sample MATLAB Program\MATLAB_Cent\exampleActivations.mat
File may be corrupt.
If possible to recreate a mat again.
/Murugan C

  1 件のコメント

Walter Roberson
2019 年 5 月 21 日
I agree, it looks like a corrupted file to me.

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