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id node_id number title user state locked assignee milestone comments created_at updated_at ▲ closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
2131785162 PR_kwDOAMm_X85muT8b 8740 add sarxarray into ecosystem list rogerkuou 33962195 closed 0     3 2024-02-13T08:42:28Z 2024-02-13T12:59:58Z 2024-02-13T12:59:55Z CONTRIBUTOR   0 pydata/xarray/pulls/8740

Related issue #8741

Hi, thanks for taking time to review this PR!

We propose to add sarxarray to the ecosystem list. This is an Xarray extension for handling Synthetic Aperture Radar (SAR) data. We implemented read/write and basic implementation functions as Xarray extension, and integrated Dask to allow chunk-wise operations.

 
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     xarray 13221727 pull
2132231561 I_kwDOAMm_X85_F0WJ 8741 Add sarxarray into ecosystem list rogerkuou 33962195 closed 0     1 2024-02-13T12:36:11Z 2024-02-13T12:59:56Z 2024-02-13T12:59:56Z CONTRIBUTOR      

What is your issue?

I propose to add sarxarray to the ecosystem list.

This is an Xarray extension for handling a specific type of remote sensing data: Synthetic Aperture Radar (SAR) data. A common application of it is ground deformation monitoring. In this application, a stack of SAR images with complex pixel values needs to be processed to retrieve the temporal dynamics. Due to the data volume (1~2TB per data stack), the complex nature of pixels, and the irregular geometry (comparing to optical images), SAR data stacks need some particular care than regular images, such as geoTIFFs. Motivated by this need, we made sarxarray using xr.register_dataarray_accessor as a user-friendly extension to handle SAR data stacks as Xarray.Dataset object.

The following functionalities are implemented:

  • Chunk-wise reading/writing SAR data using Dask;
  • Specific SAR data operations, e.g., multi-looking and coherence estimation.

Sorry I submitted PR #8740 and then realized it would be nicer to open an issue for discussion. Apologies for the confusion! However, since the PR is already opened, I will leave it to be.

Thanks very much for your time!

 
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   completed xarray 13221727 issue

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