06 Jun
2014   PySimulators 1.0

What’s new ?

• New operator: ConvolutionTruncatedExponentialOperator
• An Acquisition contains now a Scene, an Instrument and a Sampling instance
• MPI-fied Acquisition
• MPI-fied Instrument
• MPI-fied PackedTable
• PackedTable improvements:
  – generic superclass for: Scene, Layout and Sampling
  – instance attributes now correspond to the packed arrays. Unpacked arrays are available through the all attribute
  – optimisation when no element is removed or when the packed elements are a slice of all the elements.
  – implement __getitem__
  – add column and row special attributes to LayoutGrid as functions.
  – Add startswith1 keyword in LayoutGrid to start column and row indexing from 0 or 1.

• Implement FSCRot2dMatrix and FSRRot2dMatrix sparse storage schemes.

• Add method get_projection_nbytes to estimate the size of the pointing matrix without requiring to build it

• Implement Instrument __getitem__ to select detectors

• Implement Acquisition __getitem__ to select detectors and/or samplings

Under the hood:

• Orthogonalize the Galactic-to-Ecliptic rotation matrix to machine precision to avoid loss of precision when using the transpose for the inverse.
• Fix in get_noise, draw one realization per detector.
• For quantities with structured dtype, getitem should never make a copy.
• Implement projection’s restrict method in Fortran, to avoid large temporaries and significantly improve memory handling