Degrid UVW custom

C/C++

void sdp_degrid_uvw_custom(const sdp_Mem *grid, const sdp_Mem *uvw, const sdp_Mem *uv_kernel, const sdp_Mem *w_kernel, const double theta, const double wstep, const double channel_start_hz, const double channel_step_hz, const int32_t conjugate, sdp_Mem *vis, sdp_Error *status)

Degrid visibilities.

Degrids previously gridded visibilities using supplied convolution kernels.

Parameters:

• grid – Input grid data with shape [chan][w][v][u][pol]

• uvw – Visibility (u,v,w) coordinates with shape [time][baseline][3]

• uv_kernel – (u,v)-plane kernel with shape [oversampling][stride]

• w_kernel – w-plane kernel with shape [oversampling][stride]

• theta – Conversion parameter from (u,v)-coordinates to (x,y)-coordinates x=u*theta

• wstep – Conversion parameter from w-coordinates to z-coordinates z=w*wstep

• channel_start_hz – Frequency of first channel, in Hz.

• channel_step_hz – Frequency increment between channels, in Hz.

• conjugate – Whether to generate conjugated visibilities

• vis – Output Visibilities with shape [time][baseline][chan][pol]

• status – Error status.

Python