How can I read a ".dat" and ".hea" file in to MATLAB?
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Currently i am working on project which use Photo Plythismo Graph (ppg). But the data is in .dat and .hea format.
I am looking a code to get a visualize view of these PPG.
If anyone have any idea about this please add a comment on this post. Your help would be greatly appreciate and it really help my project.
5 件のコメント
Levan
2024 年 11 月 27 日
@Michelle Gee could you maybe also help me with Physionet?
Is there a chance that the wget corrupts the .hea format?
Is there a limit how much data can be downloaded in one go? Should the folders be partitioned? Is there a more secure method of downloading said data?
So does rdsamp ignore the https://physionet.org/files portion? And if files had multiple sub-folders, would a for loop where they are being interchange work or do I need to name them one at a time? and for instance if the code is on dekstop while https://physionet.org/files/ is in another folder, would it still work or do they have to be in the space workspace?
Michelle Gee
2024 年 12 月 1 日
Hi Levan,
I was using this data set (https://physionet.org/content/rvmh1/1.0.0/) and did not notice any issues with corrupted .hea files.
I was able to work with about 5 patient files at a time, but I'm guessing that is mostly a function of the computer you're using. I did not partition the folders and have not looked into more secure methods of downloading the data.
I think rdsamp just has the https://physionet.org/files portion built into the function. You don't need to have the files on your local machine because rdsamp pulls them from the website. Sorry I can' t be of more help, but I didn't try any of the things you're asking about since the dataset I was interested in does not have subfolders.
回答 (2 件)
Andrea Nemcova
2021 年 9 月 7 日
Hello,
I am one of the authors of this database and I am glad you chose the BUT PPG database for your research. May I ask you what is your research dealing with?
More information about the database is included in this brand new article: https://www.hindawi.com/journals/bmri/2021/3453007/ .
The data are in standard WFDB format (very common on Physionet). This format (including .dat and .hea) can be read using WFDB toolbox https://archive.physionet.org/physiotools/matlab/wfdb-app-matlab/ .
I hope this helps. If you have any further question, feel free to ask.
Best regards,
Andrea Nemcova
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