Create a PNG/JPEG from OLCI L1 Netcdf File

development python
1

Dear all,

I downloaded OLCI Level 1 products from the Copernicus Data Hub. I need to create a jpeg/png from the different bands of OLCI L1 product on Python. These files are NetCDF file providing an array with radiances for each pixels.

Thanks,

Lucas.

2

You can use pconvert directly from the command line. It is shipped along with SNAP. The usage is documented in the help.

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Then you can avoid python at all or you can call it from a Python script as a sub-process…
Or you use snappy ( Configure Python to use the SNAP-Python (snappy) interface - SNAP Wiki). Then you can have a look at these threads which can help you:

Exporting RGB image as GeoTIFF error - development / python - STEP Forum (esa.int)

Exporting RGB image with vector layers - development / python - STEP Forum (esa.int)

3

This should be accessible via the raster-menu in the GUI.

4

Happy coding!

5

When dealing with OLCI Level 1 NetCDF files, I’d recommend using Python libraries like xarray or rasterio to handle the data. Once you extract the bands, you can easily create PNG or JPEG images. Personally, I find the matplotlib library pretty handy for visualizations. Don’t forget to consider jpg compress for optimized file sizes.