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Support PI (polarized intensity) and PA (polarized angle) request from the frontend #433

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kswang1029 opened this issue Feb 5, 2020 · 1 comment
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enhancement New feature or request requiring frontend this backend issue requires work in both frontend and backend
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@kswang1029
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kswang1029 commented Feb 5, 2020

Currently the backend can supply profiles and images of any Stokes parameter. We need to extend this to PI (polarized intensity) and PA (polarized angle) so the backend will use Q and U profiles to derived PI and PA profiles. Fractional quantities should be supported too.

This includes:

  • profiles
  • contours
  • raster image

ref: https://github.com/CARTAvis/carta-frontend/issues/713

@markccchiang
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Is it similar to the way in image moments generation? First, the frontend sends requirements to the backend, generating polarized intensity, fractional polarized intensity, or polarized angle raster images. Then, the backend opens these generated raster images and sends open files acks to the frontend. Using these raster images, we can do profiles or contours analysis.

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enhancement New feature or request requiring frontend this backend issue requires work in both frontend and backend
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