how to extract data from metadata in matlab?

I have a dataset in metadata format hdf5 (redd.h5 come from python) I wanted to write a function that allows me to import and extract these data in matlab. I do not know how to start. I need a track, please

Answer 1

[Himanshu Rai]

You should to refer to the following links in file exchange

• HDF5 Read/Write Cellstr Example
• HDF5TOOLS

[Inouss]

thank you Himanshu Rai

Answer 2

[Walter Roberson]

https://www.mathworks.com/help/matlab/hdf5-files.html

[Inouss]

Thank you Walter Roberson. i have a problem with h5read () when i'm doing this code with h5info it works

building1=h5read('path/redd.h5','/building1/elec/meter1')

but with H5read () it will return this error :

• Error using h5readc
• The HDF5 library encountered an error and produced the following stack trace information:
• H5Dopen2 not a dataset
• Error in h5read (line 58)
• [data,var_class] = h5readc(Filename,Dataset,start,count,stride);

[Walter Roberson]

Is that data from http://redd.csail.mit.edu/ ?

[Inouss]

Yes, This data comes from http://redd.csail.mit.edu/ ?

[Walter Roberson]

Atch, needs a username and password to download the data.

[Inouss]

I used the NILMTK tool to convert it to hdf5 format

https://github.com/nilmtk/nilmtk/blob/master/docs/manual/user_guide/data.ipynb