Export HDF5 data based on latitude and longitude

Hello,

I need to extract data from some HDF5 files.

The attribute is described as '/Soil_Moisture_Retrieval_Data_AM/soil_moisture/'. The image is in global grid. I need to extract the data for a specific (x, y) coordinate pair. Example: -41 long, -9 lat.

Can anyone help me with this? In fact, I have little programming knowledge.

An example with one of the HDF5 files can be found here: SMAP L3.

Thank you in advance.

Answer 1

[Aravind]

Hi @Diego Araujo,

MATLAB allows you to read and extract data from HDF5 files using the “h5read” function. This function reads data from an HDF5 dataset and outputs it as a MATLAB data structure, such as an array, vector, or matrix. To access soil moisture data, you can use the “h5read” function like this:

data = h5read(filename, "/Soil_Moisture_Retrieval_Data_AM/soil_moisture")

This will help you obtain the data point containing the latitude and longitude you need. Since the file you mentioned is not accessible, providing more specific details is challenging. However, once you have the data point, you should be able to access the latitude and longitude using simple indexing.

For more information on the “h5read” function, you can view the documentation by entering the following command in the MATLAB Command prompt:

doc h5read

I hope this helps resolve your query.