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I have a very large HDF5 file created using Python/ h5py. I cannot open the file on HDFView 2.14, when I try to open the file nothing happens. Any suggestions on how I can open/ view the file? It contains just 5 datasets, but each dataset has 778 million rows.. hence the problem.

Thank you!

Mridula Gunturi
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  • How do you know it's a size issue? Does HDFView work for a smaller file from the same source? Error messages? – hpaulj Apr 21 '18 at 07:53
  • Just fixed it- turns out I could solve the problem by compressing the file using gzip compression :) Thanks anyway!! – Mridula Gunturi Apr 23 '18 at 17:29
  • Hi, I encounter a similar problem with a 60GB h5 file. could you explain how to compress the file using gzip?After compress will it be a .rar file?Then how could this be opened in hdfviewer? thanks. – mendel Feb 15 '23 at 08:12

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you can edit your hdfview.bat and add more memory on the switch

this is the line on .bat file: start "HDFView" "%JAVABIN%\javaw.exe" %JAVAOPTS% -Xmx1024M -Djava.library.path="%INSTALLDIR%\lib;%INSTALLDIR%\lib\ext" -Dhdfview.root="%INSTALLDIR%" -cp "%INSTALLDIR%\lib\fits.jar;%INSTALLDIR%\lib\netcdf.jar;%INSTALLDIR%\lib\jarhdf-3.3.2.jar;%INSTALLDIR%\lib\jarhdf5-3.3.2.jar;%INSTALLDIR%\lib\slf4j-api-1.7.5.jar;%INSTALLDIR%\lib\extra\slf4j-nop-1.7.5.jar;%INSTALLDIR%\lib\HDFView.jar" hdf.view.HDFView %*

you can edit -Xmx1024M to more like: -Xmx4024M it add more memory to java machine

GiPag
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