fg21sim.git/fg21sim/utils, branch ps

utils/fits.py: Add parameter "checksum" for write_fits_healpix()

2016-10-27T03:12:01+00:00

Also update the docstring and one comment.

utils/rotate.py: Fix two bugs which cause wrong results

2016-10-26T12:35:16+00:00

* Fix the wrong output shape: wrongly swap the row and column
* Fix the area mapping method, which may give zero values when the index
  of the input is integer, which cause problem to calculate the
  overlapping areas.

utils/grid.py: JIT optimize "make_grid_ellipse()"

2016-10-26T07:50:19+00:00

NOTE that the original optional paramter "rotation" is now required.

utils/grid.py: Use own-implemented JIT-optimized "rotate_center()"

2016-10-26T07:36:57+00:00

Also remove the dependence on "scipy".

Add utils/rotate.py: Implement basic image rotation

2016-10-26T07:33:28+00:00

The "rotate_center()" function rotates a gray-scale image by a given
angle about its center, using the area mapping method or simple nearest
neighbor.

This function is `numba` JIT-optimized, and can replace the
`scipy.ndimage.rotate()` function.

draw.py: Remove the unused "circle()" function

2016-10-25T15:34:18+00:00

draw.py: Optimize "ellipse()" using numba JIT

2016-10-25T15:32:37+00:00

NOTE: However, there are two significant problems:
* Cannot figure out why ``nb.optional(nb.types.UniTuple(nb.int64, 2))``
  does NOT work.  Therefore, make ``shape`` as mandatory parameter
  instead of optional.
* Cannot figure out multi-dispatch that allows both int and float types
  for ``r``, ``c``, ``r_radius`` and ``c_radius``.  Thus only support
  the int type for the moment.

draw.py: Optimize "_ellipse_in_shape()" using JIT

2016-10-25T13:52:38+00:00

grid.py: Override "make_coordinate_grid()" using JIT-optimized version

2016-10-25T13:21:05+00:00

Remove the original "make_coordinate_grid()" function, and rename the
"make_coordinate_grid_fast()" to override the former one.

grid.py: Change "make_coordinate_grid_fast()" parameters

2016-10-25T13:18:43+00:00

Change the parameters of "make_coordinate_grid_fast()", make it share
the same parameter list as "make_coordinate_grid()".